diff --git a/.env.coolify.example b/.env.coolify.example
index 48c5ea7..3709b5d 100644
--- a/.env.coolify.example
+++ b/.env.coolify.example
@@ -96,6 +96,12 @@ TRANSCRIPTION_MODEL=whisper-1
 # --- KI: Kostenbremse & Aufbewahrung KI-Protokoll ---
 # Tokens je Mandant je Kalendermonat (ein+aus), 0 = unbegrenzt.
 AI_MONTHLY_TOKEN_LIMIT=0
+
+# --- Craftvia: Testphase (L15, docs/craftvia/TESTPHASE.md) ---
+# Längste selbst gewählte Testphase in Tagen (1–365); Vorbelegung im Wizard heute + 14.
+TRIAL_MAX_DAYS=30
+# Kontakt in Banner und Testphasen-Mails (Vollversion/Verlängerung); leer = allgemeiner Hinweis.
+TRIAL_CONTACT_EMAIL=
 # Ein-/Ausgaben im KI-Protokoll (AiGeneration) nach N Tagen leeren/pseudonymisieren.
 AI_GENERATION_RETENTION_DAYS=180
 
diff --git a/.env.example b/.env.example
index bf2fbe5..4948868 100644
--- a/.env.example
+++ b/.env.example
@@ -129,6 +129,12 @@ AI_GENERATION_RETENTION_DAYS=180
 # Import-Extraktion ab. 0 = unbegrenzt.
 AI_MONTHLY_TOKEN_LIMIT=0
 
+# --- Craftvia: Testphase (L15, docs/craftvia/TESTPHASE.md) ---
+# Längste selbst gewählte Testphase in Tagen (1–365); Vorbelegung im Wizard heute + 14.
+TRIAL_MAX_DAYS=30
+# Kontakt in Banner und Testphasen-Mails (Vollversion/Verlängerung); leer = allgemeiner Hinweis.
+TRIAL_CONTACT_EMAIL=
+
 # --- Craftvia: Planung – Karten & Geocoding (L13) ---
 # Adresse → Koordinaten nur serverseitig im Worker (Job geocode-site, max. 1 Anfrage/s),
 # Ergebnis wird am Objekt gespeichert. nominatim | none (none = keine Verortung, Objekte
diff --git a/.env.prod.example b/.env.prod.example
index 4d8b616..f88524b 100644
--- a/.env.prod.example
+++ b/.env.prod.example
@@ -99,6 +99,12 @@ TRANSCRIPTION_MODEL=whisper-1
 # Tokens (ein + aus) je Mandant je Kalendermonat; darüber lehnen Lotse und
 # Import-Extraktion ab. 0 = unbegrenzt.
 AI_MONTHLY_TOKEN_LIMIT=0
+
+# --- Craftvia: Testphase (L15, docs/craftvia/TESTPHASE.md) ---
+# Längste selbst gewählte Testphase in Tagen (1–365); Vorbelegung im Wizard heute + 14.
+TRIAL_MAX_DAYS=30
+# Kontakt in Banner und Testphasen-Mails (Vollversion/Verlängerung); leer = allgemeiner Hinweis.
+TRIAL_CONTACT_EMAIL=
 # Nach N Tagen leert/pseudonymisiert ein Worker-Job Ein-/Ausgaben im KI-Protokoll
 # (AiGeneration). Frist mit dem DSB abstimmen.
 AI_GENERATION_RETENTION_DAYS=180
diff --git a/docs/craftvia/API.md b/docs/craftvia/API.md
index 5ab762a..48ee815 100644
--- a/docs/craftvia/API.md
+++ b/docs/craftvia/API.md
@@ -96,3 +96,9 @@ Die Pfade sind relativ zu `/api/v1`. „Recht“ nennt das Gate der Route. Mit 
 | GET | `/planning/recommendations` | work_orders | `work_order:assign` | Einsatz-Empfehlungen (Luftlinie + freie Kapazität, Top 5) + nahe ungeplante Aufträge; nur Vorschläge |
 | GET | `/planning/live` | work_orders | Service: `work_order:read_all` oder Teamleiter | Live-Lage: Status aus aktiver WorkSession, Standort = Objekt des Auftrags, keine Geräte-Koordinaten |
 | GET | `/openapi.json` | – | angemeldet | OpenAPI-3.1-Dokument |
+
+## Testphase: Nur-Lesen nach Ablauf (L15)
+
+Für abgelaufene Testmandanten beantworten alle nicht lesenden Anfragen (POST/PUT/PATCH/DELETE, inkl.
+`/sync` und `/uploads`) mit **422** `{ "error": { "code": "blocked", "message": "trial_expired", "details": { "readOnly": true, "message": "…", "deletionDueAt": "…" } } }`.
+GET-Anfragen, Datei-Downloads und PDFs bleiben erlaubt. Siehe [TESTPHASE.md](TESTPHASE.md).
diff --git a/docs/craftvia/DEPLOY.md b/docs/craftvia/DEPLOY.md
index 90fa1d3..2dbf6fe 100644
--- a/docs/craftvia/DEPLOY.md
+++ b/docs/craftvia/DEPLOY.md
@@ -208,6 +208,15 @@ Metadaten (Art, Modell, Tokens, Zeitpunkt, Bezug) bleiben für Kosten- und Nachv
 je Mandant wird ein Audit-Eintrag `ai_generation_retention` geschrieben. Die Frist mit dem DSB abstimmen.
 Die Variable muss im `craftvia-worker` gesetzt sein.
 
+### 7.4 Testphase (L15)
+
+Öffentliche Selbstanmeldung unter `/testen`, Plattform-Wizard unter `/admin/trial`. Variablen
+`TRIAL_MAX_DAYS` (Default 30) und `TRIAL_CONTACT_EMAIL`. Der `craftvia-worker` legt beim Start den
+täglichen Job-Scheduler `trial-lifecycle-daily` an (Erinnerungen, Ablauf, Löschung nach 30 Tagen) und
+verarbeitet `tenant-export` (Datenexport). Details, Schreibsperre und manueller Lauf:
+[TESTPHASE.md](TESTPHASE.md). Vor dem Go-live die Platzhaltertexte für Nutzungsbedingungen und
+Datenschutz (`messages/*/trial.json` → `legal.*`) ersetzen.
+
 ## 8. Rate Limits
 
 | Bereich | Env | Default | Zählung |
diff --git a/docs/craftvia/TESTPHASE.md b/docs/craftvia/TESTPHASE.md
new file mode 100644
index 0000000..0c1004b
--- /dev/null
+++ b/docs/craftvia/TESTPHASE.md
@@ -0,0 +1,67 @@
+# Craftvia – Testphase & Onboarding (Betrieb)
+
+Stand: 2026-09-16 · Lane L15 · Lane-Bericht: [lanes/testphase.md](lanes/testphase.md)
+
+Craftvia lässt sich als zeitlich begrenzte Testversion anbieten – per öffentlicher Selbstanmeldung
+(`/testen`) oder durch den Plattform-Admin (`/admin/trial`).
+
+## 1. Lebenszyklus
+
+| Phase | Zustand | Was gilt |
+|---|---|---|
+| Anmeldung | `TrialSignup.status = pending` | Nichts provisioniert. Bestätigungslink 24 h gültig, einmal verwendbar. |
+| Testphase | `Tenant.plan = TRIAL`, `now < trialEndsAt` | Voll nutzbar. Banner „Testphase endet in X Tagen“ ab 7 Tagen vor Ende. |
+| Abgelaufen | `now ≥ trialEndsAt` | **Nur lesen + Export.** Login, Lesen, Datei-Downloads, PDFs, Export bleiben möglich. |
+| Löschung | `now ≥ deletionDueAt` (Standard: Ende + 30 Tage) | Täglicher Job löscht den Mandanten (Offboarding aller Mandanten-Tabellen + Speicher `<tenantId>/`), Mandant `ARCHIVED`. |
+| Umgewandelt | `plan = FULL`, `convertedAt` | Nie Nur-Lesen, nie automatische Löschung. |
+
+`trialEndsAt` ist das **exklusive** Ende: Beginn des Folgetags des gewählten Datums in Europe/Berlin.
+Die Sperre hängt nur an diesem Zeitpunkt, nicht am Job – sie greift sekundengenau.
+
+Plattform-Aktionen (Mandantendetail, Karte „Testphase“, jeweils mit Bestätigung und Plattform-Audit):
+Enddatum ändern/verlängern (auch nach Ablauf → sofort wieder schreibbar, Erinnerungen neu geplant),
+in Vollversion umwandeln, Testphase sofort beenden, Löschung vormerken (Ende + 30 Tage, frühestens in
+7 Tagen) bzw. abbrechen. Nur Plattform-**Voll**-Admins; Mandanten-Admins haben keinen Weg dorthin.
+
+## 2. Konfiguration
+
+| Variable | Default | Bedeutung |
+|---|---|---|
+| `TRIAL_MAX_DAYS` | `30` | Längste selbst gewählte Testphase (1–365). Vorbelegung im Wizard: heute + 14 (höchstens `TRIAL_MAX_DAYS`). Der Plattform-Admin darf bis 365 Tage setzen. |
+| `TRIAL_CONTACT_EMAIL` | leer | Kontakt in Banner und Testphasen-Mails („Vollversion oder Verlängerung: …“). Leer = allgemeiner Hinweis. |
+
+Weitere Voraussetzungen: `APP_BASE_URL` (Links in Mails), funktionierender Mailversand (Double-Opt-in),
+S3/Garage (Export-Dateien), `REDIS_URL` + `craftvia-worker` (Jobs). Rate-Limits der öffentlichen
+Endpunkte sind fest (je App-Instanz, siehe `src/server/rate-limit.ts`): Anmeldung 5/h je IP und je
+E-Mail, Bestätigung 20/15 min je IP, Schrittprüfung 120/15 min je IP.
+
+## 3. Jobs (`npm run worker:craftvia`)
+
+| Queue | Auslöser | Inhalt |
+|---|---|---|
+| `trial-lifecycle` | Job-Scheduler `trial-lifecycle-daily` (alle 24 h, beim Worker-Start angelegt) | Erinnerungen 7/3/1 Tage vorher, Ablaufmail, Löschhinweis 7 Tage vor Löschung, Löschung, Aufräumen alter Anmeldungen (7 Tage nach Link-Ablauf). Idempotent: jede Mail wird vor dem Versand über eine bedingte Aktualisierung „beansprucht“. |
+| `tenant-export` | „Export erstellen“ unter `/settings/export` | ZIP (CSV + JSON + Dateien) nach `<tenantId>/uploads/…`, Download 7 Tage über `/settings/export/<id>` (Sitzung + `tenant:manage`). Ohne Redis läuft der Export inline. |
+
+Manueller Lauf (z. B. nach Ausfall des Workers), im App- oder Worker-Container:
+
+```bash
+node --import tsx -e "import('./src/server/services/trial/lifecycle.ts').then(m => m.runTrialLifecycle()).then(console.log)"
+```
+
+Im Worker werden Jobs, die im Namen von Nutzern schreiben (`import-extraction`, `transcription`), für
+abgelaufene Testmandanten übersprungen. PDFs/Vorschaubilder bereits gespeicherter Daten laufen weiter.
+
+## 4. Schreibsperre – wo sie greift
+
+- Server Actions der Module: `moduleGuard` (`src/server/action-guard.ts`) → `ServiceError("blocked", "trial_expired")`.
+- `/api/v1`: `requireApiContext` sperrt jede nicht lesende Anfrage, die über `withApi` läuft (Sync, Uploads, alle Mutationen) → HTTP 422 `{ error: { code: "blocked", message: "trial_expired", details: { readOnly: true, message, deletionDueAt } } }`. Die Offline-Outbox behandelt 422 beim Sync-Batch als vorübergehend und wiederholt später.
+- Routen außerhalb von `withApi`: Backoffice-Upload `/documents/upload`, `POST /api/v1/work-orders/[id]/documents` (explizit).
+- Einstellungen, Nutzer-/Rollenverwaltung, Lotse-Einstellungen (EXEMPT-Actions, explizit).
+- Nicht gesperrt: Login, Konto (eigenes Passwort, MFA, Sprache), Mandantenwechsel, Lesen, `/files/<id>`, Export, Plattform-Aktionen.
+
+## 5. Datenschutz
+
+- Anmeldung speichert Passwort nur als Argon2id-Hash (mit Pepper), Link-Token nur als SHA-256, IP nur als HMAC. Der Passwort-Hash wird nach Bestätigung/Ablauf aus der Anmeldung entfernt; Anmeldungen werden 7 Tage nach Link-Ablauf gelöscht.
+- Enumeration-Schutz: Für bereits registrierte Adressen gleiche Antwort, aber Hinweis-Mail statt Link.
+- Nutzungsbedingungen und Datenschutzhinweise unter `/testen/nutzungsbedingungen` bzw. `/testen/datenschutz` sind **Platzhalter** (Texte in `messages/<locale>/trial.json` → `legal.*`) und vor dem Go-live vom Betreiber zu ersetzen.
+- Löschung über das bestehende DSGVO-Offboarding (Löschnachweis `DeletionCertificate`), zusätzlich Objektspeicher-Präfix `<tenantId>/`.
diff --git a/messages/de/nav.json b/messages/de/nav.json
index c3251f5..3f1dbf6 100644
--- a/messages/de/nav.json
+++ b/messages/de/nav.json
@@ -21,5 +21,6 @@
   "openMenu": "Menü öffnen",
   "closeMenu": "Menü schließen",
   "timeApprovals": "Zeiten zur Freigabe",
-  "billing": "Abrechnung"
+  "billing": "Abrechnung",
+  "dataExport": "Datenexport"
 }
diff --git a/messages/de/trial.json b/messages/de/trial.json
new file mode 100644
index 0000000..d8e5a78
--- /dev/null
+++ b/messages/de/trial.json
@@ -0,0 +1,269 @@
+{
+  "meta": {
+    "title": "Kostenlos testen",
+    "confirmTitle": "Testphase bestätigen",
+    "termsTitle": "Nutzungsbedingungen",
+    "privacyTitle": "Datenschutz"
+  },
+  "public": {
+    "heading": "Craftvia kostenlos testen",
+    "intro": "In wenigen Minuten eingerichtet. Ohne Zahlungsdaten, ohne automatische Verlängerung.",
+    "benefit1": "Aufträge planen, Einsätze mobil erfassen, Berichte mit Unterschrift",
+    "benefit2": "Enddatum frei wählen – danach bleiben Ihre Daten lesbar und exportierbar",
+    "benefit3": "Auf Wunsch mit Beispieldaten zum sofortigen Ausprobieren",
+    "haveAccount": "Schon einen Zugang?",
+    "login": "Anmelden",
+    "terms": "Nutzungsbedingungen",
+    "privacy": "Datenschutz"
+  },
+  "steps": {
+    "company": "Betrieb",
+    "account": "Admin-Konto",
+    "period": "Testzeitraum",
+    "setup": "Einrichtung",
+    "summary": "Zusammenfassung"
+  },
+  "progress": "Schritt {current} von {total}",
+  "progressLabel": "Fortschritt",
+  "fields": {
+    "companyName": "Firmenname",
+    "sector": "Branche",
+    "sectorChoose": "Bitte wählen (optional)",
+    "sectorOther": "Branche (Freitext)",
+    "companySize": "Betriebsgröße",
+    "companySizeNone": "Keine Angabe",
+    "adminName": "Ihr Name",
+    "email": "E-Mail-Adresse",
+    "emailHint": "Die Adresse ist Ihr Anmeldename. Wir senden Ihnen einen Bestätigungslink.",
+    "password": "Passwort",
+    "passwordHint": "Anforderungen: {policy}",
+    "showPassword": "Passwort anzeigen",
+    "trialEndDate": "Testphase bis",
+    "sampleData": "Mit Beispieldaten starten",
+    "sampleDataHint": "Drei Kunden, Objekte, ein Team und vier Aufträge in verschiedenen Zuständen. Sie können sie jederzeit löschen.",
+    "modules": "Module",
+    "modulesHint": "Alle Module sind vorausgewählt. Nicht benötigte Module können Sie abwählen – später lässt sich das ändern.",
+    "acceptTerms": "Ich akzeptiere die {link}.",
+    "acceptPrivacy": "Ich habe die {link} gelesen.",
+    "required": "Pflichtfeld",
+    "website": "Website (bitte leer lassen)"
+  },
+  "sectors": {
+    "shk": "Sanitär, Heizung, Klima",
+    "electrical": "Elektro",
+    "roofing": "Dach und Fassade",
+    "carpentry": "Tischlerei und Innenausbau",
+    "painting": "Maler und Lackierer",
+    "facility": "Gebäudetechnik und Facility",
+    "construction": "Bau und Montage",
+    "metal": "Metallbau",
+    "other": "Andere Branche"
+  },
+  "sizes": {
+    "1_5": "1–5 Beschäftigte",
+    "6_20": "6–20 Beschäftigte",
+    "21_50": "21–50 Beschäftigte",
+    "51_200": "51–200 Beschäftigte",
+    "200_": "mehr als 200 Beschäftigte"
+  },
+  "period": {
+    "until": "Testphase bis {date} ({days, plural, one {# Tag} other {# Tage}})",
+    "range": "Möglich: {min} bis {max}",
+    "afterEnd": "Nach dem Enddatum bleiben Ihre Daten lesbar und exportierbar. Ohne Umwandlung in die Vollversion löschen wir sie 30 Tage später."
+  },
+  "summary": {
+    "intro": "Bitte prüfen Sie Ihre Angaben.",
+    "sampleYes": "mit Beispieldaten",
+    "sampleNo": "ohne Beispieldaten",
+    "modulesCount": "{count} von {total} Modulen",
+    "edit": "Ändern",
+    "noSector": "keine Branche angegeben"
+  },
+  "actions": {
+    "back": "Zurück",
+    "next": "Weiter",
+    "submit": "Testphase starten",
+    "submitting": "Wird gesendet …",
+    "checking": "Wird geprüft …"
+  },
+  "sent": {
+    "title": "Fast geschafft – bitte E-Mail bestätigen",
+    "body": "Wir haben Ihnen eine E-Mail geschickt. Klicken Sie auf den Link darin, um Ihre Testphase zu starten.",
+    "hint": "Der Link ist 24 Stunden gültig. Keine E-Mail erhalten? Prüfen Sie den Spam-Ordner oder starten Sie die Anmeldung erneut.",
+    "again": "Anmeldung neu starten"
+  },
+  "errors": {
+    "company_required": "Bitte den Firmennamen angeben (mindestens 2 Zeichen).",
+    "too_long": "Die Eingabe ist zu lang.",
+    "invalid_choice": "Bitte einen Eintrag aus der Liste wählen.",
+    "name_required": "Bitte Ihren Namen angeben.",
+    "email_invalid": "Bitte eine gültige E-Mail-Adresse angeben.",
+    "password_policy": "Das Passwort erfüllt die Anforderungen nicht.",
+    "date_invalid": "Bitte ein gültiges Datum wählen.",
+    "date_too_early": "Das Enddatum muss frühestens morgen sein.",
+    "date_too_late": "Das Enddatum liegt zu weit in der Zukunft.",
+    "modules_required": "Bitte mindestens ein Modul auswählen.",
+    "terms_required": "Bitte die Nutzungsbedingungen akzeptieren.",
+    "privacy_required": "Bitte die Datenschutzhinweise bestätigen.",
+    "invalid_request": "Die Anfrage war unvollständig. Bitte Seite neu laden.",
+    "rate_limited": "Zu viele Versuche. Bitte in einigen Minuten erneut versuchen.",
+    "failed": "Das hat nicht geklappt. Bitte erneut versuchen."
+  },
+  "confirm": {
+    "title": "Testphase starten",
+    "intro": "Bestätigen Sie Ihre Anmeldung. Danach richten wir Ihren Zugang ein und melden Sie direkt an.",
+    "company": "Betrieb",
+    "until": "Testphase bis",
+    "sampleData": "Beispieldaten",
+    "yes": "ja",
+    "no": "nein",
+    "button": "Jetzt einrichten",
+    "pending": "Wird eingerichtet …",
+    "invalid": "Der Link ist ungültig oder wurde bereits verwendet.",
+    "expired": "Der Link ist abgelaufen. Bitte starten Sie die Anmeldung erneut.",
+    "rate_limited": "Zu viele Versuche. Bitte in einigen Minuten erneut versuchen.",
+    "toSignup": "Zur Anmeldung „Kostenlos testen“",
+    "toLogin": "Zum Login"
+  },
+  "legal": {
+    "back": "Zurück zur Anmeldung",
+    "placeholder": "Platzhalter – der verbindliche Text wird vom Betreiber vor dem Go-live eingesetzt.",
+    "termsBody1": "Die Testphase ist kostenlos und endet automatisch zum gewählten Datum. Es entsteht kein Vertrag über eine kostenpflichtige Nutzung.",
+    "termsBody2": "Nach dem Ende sind die Daten 30 Tage lesbar und exportierbar. Ohne Umwandlung in die Vollversion werden sie danach gelöscht.",
+    "privacyBody1": "Wir verarbeiten Ihre Angaben (Firmenname, Name, E-Mail-Adresse) zur Einrichtung und Betreuung der Testphase. Passwörter speichern wir ausschließlich als sicheren Hash.",
+    "privacyBody2": "Nicht bestätigte Anmeldungen löschen wir nach wenigen Tagen. Daten der Testphase werden nach Ablauf gemäß den Nutzungsbedingungen gelöscht."
+  },
+  "banner": {
+    "endsIn": "{days, plural, =0 {Testphase endet heute.} =1 {Testphase endet morgen.} other {Testphase endet in # Tagen.}}",
+    "endsOn": "Letzter Tag: {date}.",
+    "expired": "Testphase abgelaufen – nur Lesezugriff.",
+    "deletion": "Daten werden am {date} gelöscht.",
+    "contact": "Vollversion oder Verlängerung: {email}",
+    "contactGeneric": "Vollversion oder Verlängerung? Wenden Sie sich an Ihren Ansprechpartner bei Craftvia.",
+    "export": "Daten exportieren"
+  },
+  "onboarding": {
+    "title": "Erste Schritte",
+    "welcome": "Willkommen! Ihre Testphase ist eingerichtet.",
+    "progress": "{done} von {total} erledigt",
+    "hide": "Ausblenden",
+    "markDone": "Als erledigt markieren",
+    "markOpen": "Wieder öffnen",
+    "open": "Öffnen",
+    "auto": "erkannt",
+    "doneLabel": "Erledigt",
+    "openLabel": "Offen",
+    "items": {
+      "company": { "title": "Firmendaten prüfen", "text": "Adresse, Telefon und E-Mail erscheinen auf Berichten." },
+      "team": { "title": "Team anlegen", "text": "Teams bündeln Monteure für Planung und Zuweisung." },
+      "technician": { "title": "Monteur einladen", "text": "Ein Einladungslink genügt – das Passwort vergibt die Person selbst." },
+      "first_order": { "title": "Ersten Auftrag anlegen oder importieren", "text": "Manuell erfassen oder ein Auftrags-PDF hochladen." },
+      "mobile": { "title": "Mobile App öffnen", "text": "Auf dem Smartphone /m aufrufen und zum Startbildschirm hinzufügen." }
+    }
+  },
+  "export": {
+    "crumb": "Organisation",
+    "title": "Datenexport",
+    "sub": "Alle Daten Ihres Betriebs als ZIP-Datei",
+    "contents": "Enthalten: Kunden, Ansprechpartner, Objekte, Teams, Aufträge, Zeiten, Material, Berichte, Meilensteine und Abrechnung als CSV und JSON sowie alle gespeicherten Dateien (Dokumente, Berichts-PDFs, Fotos).",
+    "readOnlyHint": "Der Export ist auch nach Ablauf der Testphase möglich.",
+    "request": "Export erstellen",
+    "requested": "Export angefordert. Die Datei steht in wenigen Minuten bereit – laden Sie die Seite dann neu.",
+    "listTitle": "Letzte Exporte",
+    "empty": "Noch kein Export erstellt.",
+    "created": "Angefordert",
+    "state": "Status",
+    "file": "Datei",
+    "status": { "queued": "Wartet", "running": "Wird erstellt", "done": "Bereit", "failed": "Fehlgeschlagen", "expired": "Abgelaufen" },
+    "download": "Herunterladen",
+    "expires": "bis {date}",
+    "errors": {
+      "export_running": "Es läuft bereits ein Export. Bitte warten Sie, bis er fertig ist.",
+      "failed": "Der Export konnte nicht angefordert werden."
+    }
+  },
+  "platform": {
+    "newTrial": "Testmandant anlegen",
+    "filter": "Filter",
+    "filterAll": "Alle",
+    "filterTrial": "Test",
+    "filterFull": "Voll",
+    "colPlan": "Version",
+    "badgeFull": "Vollversion",
+    "badgeUntil": "Test bis {date}",
+    "badgeExpired": "abgelaufen – nur lesen",
+    "badgeDeletion": "Löschung am {date}",
+    "badgeDeleted": "gelöscht",
+    "wizard": {
+      "crumb": "Plattform-Betrieb",
+      "title": "Testmandant anlegen",
+      "sub": "Mandant mit Enddatum anlegen; der Admin erhält eine Einladung zum Passwort-Setzen.",
+      "sectionCompany": "1. Betrieb",
+      "sectionAdmin": "2. Administrator",
+      "sectionPeriod": "3. Testzeitraum",
+      "sectionSetup": "4. Einrichtung",
+      "companyName": "Firmenname",
+      "sector": "Branche (optional)",
+      "adminName": "Name",
+      "adminEmail": "E-Mail-Adresse",
+      "adminHint": "Neue Adressen erhalten den bestehenden Einladungslink (7 Tage gültig). Bestehende Zugänge werden nur verknüpft.",
+      "endDate": "Testphase bis",
+      "endDateHint": "Frei wählbar bis ein Jahr im Voraus.",
+      "sampleData": "Mit Beispieldaten",
+      "submit": "Testmandant anlegen",
+      "submitting": "Wird angelegt …",
+      "cancel": "Abbrechen"
+    },
+    "card": {
+      "title": "Testphase",
+      "plan": "Version",
+      "until": "Letzter Tag",
+      "state": "Zustand",
+      "stateActive": "läuft",
+      "stateExpired": "abgelaufen – nur lesen",
+      "stateConverted": "in Vollversion umgewandelt",
+      "stateDeleted": "gelöscht",
+      "deletion": "Löschung",
+      "deletionNone": "nicht vorgemerkt",
+      "source": "Herkunft",
+      "sourceSelf": "Selbstanmeldung",
+      "sourcePlatform": "Plattform-Wizard",
+      "extend": "Enddatum ändern / verlängern",
+      "convert": "In Vollversion umwandeln",
+      "end": "Testphase sofort beenden",
+      "schedule": "Löschung vormerken",
+      "cancel": "Löschung abbrechen",
+      "created": "Testmandant angelegt.",
+      "invited": "Die Einladung an den Administrator wurde verschickt.",
+      "done": "Änderung gespeichert."
+    },
+    "ops": {
+      "extendTitle": "Enddatum ändern",
+      "extendText": "Neues letztes Testdatum. Liegt es in der Zukunft, ist der Mandant sofort wieder schreibbar; Erinnerungen werden neu geplant.",
+      "convertTitle": "In Vollversion umwandeln",
+      "convertText": "Der Mandant bleibt dauerhaft schreibbar und wird nie automatisch gelöscht.",
+      "endTitle": "Testphase sofort beenden",
+      "endText": "Der Mandant ist ab sofort nur noch lesbar. Eine vorgemerkte Löschung verschiebt sich auf 30 Tage ab heute.",
+      "scheduleTitle": "Löschung vormerken",
+      "scheduleText": "Löschung 30 Tage nach Ende, frühestens in 7 Tagen (Hinweismail an die Admins).",
+      "cancelTitle": "Löschung abbrechen",
+      "cancelText": "Der Mandant wird nicht automatisch gelöscht. Er bleibt nach Ablauf nur lesbar.",
+      "confirm": "Ich bestätige diese Änderung.",
+      "submit": "Ausführen",
+      "submitting": "Wird ausgeführt …",
+      "close": "Schließen"
+    },
+    "errors": {
+      "confirm_required": "Bitte die Bestätigung ankreuzen.",
+      "invalid_input": "Bitte die Eingaben prüfen.",
+      "date_invalid": "Bitte ein gültiges Datum wählen.",
+      "date_in_past": "Das Enddatum darf nicht in der Vergangenheit liegen.",
+      "date_too_late": "Das Enddatum liegt mehr als ein Jahr in der Zukunft.",
+      "not_a_trial": "Dieser Mandant ist keine Testversion.",
+      "tenant_deleted": "Der Mandant wurde bereits gelöscht.",
+      "platform_admin_required": "Nur Plattform-Voll-Administratoren dürfen das.",
+      "tenant not found": "Mandant nicht gefunden.",
+      "failed": "Die Aktion ist fehlgeschlagen."
+    }
+  }
+}
diff --git a/messages/en/nav.json b/messages/en/nav.json
index 5c2e9dd..cbcb063 100644
--- a/messages/en/nav.json
+++ b/messages/en/nav.json
@@ -21,5 +21,6 @@
   "openMenu": "Open menu",
   "closeMenu": "Close menu",
   "timeApprovals": "Time approvals",
-  "billing": "Billing"
+  "billing": "Billing",
+  "dataExport": "Data export"
 }
diff --git a/messages/en/trial.json b/messages/en/trial.json
new file mode 100644
index 0000000..9a56377
--- /dev/null
+++ b/messages/en/trial.json
@@ -0,0 +1,269 @@
+{
+  "meta": {
+    "title": "Try for free",
+    "confirmTitle": "Confirm trial",
+    "termsTitle": "Terms of use",
+    "privacyTitle": "Privacy"
+  },
+  "public": {
+    "heading": "Try Craftvia for free",
+    "intro": "Set up in minutes. No payment details, no automatic renewal.",
+    "benefit1": "Plan work orders, record jobs on mobile, reports with signature",
+    "benefit2": "Choose the end date – afterwards your data stays readable and exportable",
+    "benefit3": "Optional sample data to try everything right away",
+    "haveAccount": "Already have an account?",
+    "login": "Sign in",
+    "terms": "Terms of use",
+    "privacy": "Privacy"
+  },
+  "steps": {
+    "company": "Company",
+    "account": "Admin account",
+    "period": "Trial period",
+    "setup": "Setup",
+    "summary": "Summary"
+  },
+  "progress": "Step {current} of {total}",
+  "progressLabel": "Progress",
+  "fields": {
+    "companyName": "Company name",
+    "sector": "Trade",
+    "sectorChoose": "Please choose (optional)",
+    "sectorOther": "Trade (free text)",
+    "companySize": "Company size",
+    "companySizeNone": "Not specified",
+    "adminName": "Your name",
+    "email": "E-mail address",
+    "emailHint": "The address is your sign-in name. We will send you a confirmation link.",
+    "password": "Password",
+    "passwordHint": "Requirements: {policy}",
+    "showPassword": "Show password",
+    "trialEndDate": "Trial until",
+    "sampleData": "Start with sample data",
+    "sampleDataHint": "Three customers, sites, one team and four work orders in different states. You can delete them at any time.",
+    "modules": "Modules",
+    "modulesHint": "All modules are preselected. Deselect modules you do not need – you can change this later.",
+    "acceptTerms": "I accept the {link}.",
+    "acceptPrivacy": "I have read the {link}.",
+    "required": "Required",
+    "website": "Website (leave empty)"
+  },
+  "sectors": {
+    "shk": "Plumbing, heating, air conditioning",
+    "electrical": "Electrical",
+    "roofing": "Roofing and facades",
+    "carpentry": "Carpentry and interior fit-out",
+    "painting": "Painting and decorating",
+    "facility": "Building services and facility",
+    "construction": "Construction and installation",
+    "metal": "Metalwork",
+    "other": "Other trade"
+  },
+  "sizes": {
+    "1_5": "1–5 employees",
+    "6_20": "6–20 employees",
+    "21_50": "21–50 employees",
+    "51_200": "51–200 employees",
+    "200_": "more than 200 employees"
+  },
+  "period": {
+    "until": "Trial until {date} ({days, plural, one {# day} other {# days}})",
+    "range": "Possible: {min} to {max}",
+    "afterEnd": "After the end date your data stays readable and exportable. Unless converted to the full version, we delete it 30 days later."
+  },
+  "summary": {
+    "intro": "Please check your details.",
+    "sampleYes": "with sample data",
+    "sampleNo": "without sample data",
+    "modulesCount": "{count} of {total} modules",
+    "edit": "Edit",
+    "noSector": "no trade specified"
+  },
+  "actions": {
+    "back": "Back",
+    "next": "Next",
+    "submit": "Start trial",
+    "submitting": "Sending …",
+    "checking": "Checking …"
+  },
+  "sent": {
+    "title": "Almost done – please confirm your e-mail",
+    "body": "We have sent you an e-mail. Click the link in it to start your trial.",
+    "hint": "The link is valid for 24 hours. No e-mail? Check your spam folder or start the signup again.",
+    "again": "Start signup again"
+  },
+  "errors": {
+    "company_required": "Please enter the company name (at least 2 characters).",
+    "too_long": "The input is too long.",
+    "invalid_choice": "Please choose an entry from the list.",
+    "name_required": "Please enter your name.",
+    "email_invalid": "Please enter a valid e-mail address.",
+    "password_policy": "The password does not meet the requirements.",
+    "date_invalid": "Please choose a valid date.",
+    "date_too_early": "The end date must be tomorrow at the earliest.",
+    "date_too_late": "The end date is too far in the future.",
+    "modules_required": "Please select at least one module.",
+    "terms_required": "Please accept the terms of use.",
+    "privacy_required": "Please confirm the privacy notice.",
+    "invalid_request": "The request was incomplete. Please reload the page.",
+    "rate_limited": "Too many attempts. Please try again in a few minutes.",
+    "failed": "That did not work. Please try again."
+  },
+  "confirm": {
+    "title": "Start trial",
+    "intro": "Confirm your signup. We then set up your account and sign you in right away.",
+    "company": "Company",
+    "until": "Trial until",
+    "sampleData": "Sample data",
+    "yes": "yes",
+    "no": "no",
+    "button": "Set up now",
+    "pending": "Setting up …",
+    "invalid": "The link is invalid or has already been used.",
+    "expired": "The link has expired. Please start the signup again.",
+    "rate_limited": "Too many attempts. Please try again in a few minutes.",
+    "toSignup": "Go to “Try for free”",
+    "toLogin": "Go to sign-in"
+  },
+  "legal": {
+    "back": "Back to signup",
+    "placeholder": "Placeholder – the binding text will be provided by the operator before go-live.",
+    "termsBody1": "The trial is free of charge and ends automatically on the chosen date. No contract for paid use is concluded.",
+    "termsBody2": "After the end the data stays readable and exportable for 30 days. Unless converted to the full version, it is deleted afterwards.",
+    "privacyBody1": "We process your details (company name, name, e-mail address) to set up and support the trial. Passwords are stored as a secure hash only.",
+    "privacyBody2": "Unconfirmed signups are deleted after a few days. Trial data is deleted after expiry as described in the terms of use."
+  },
+  "banner": {
+    "endsIn": "{days, plural, =0 {Trial ends today.} =1 {Trial ends tomorrow.} other {Trial ends in # days.}}",
+    "endsOn": "Last day: {date}.",
+    "expired": "Trial expired – read-only access.",
+    "deletion": "Data will be deleted on {date}.",
+    "contact": "Full version or extension: {email}",
+    "contactGeneric": "Full version or extension? Contact your Craftvia representative.",
+    "export": "Export data"
+  },
+  "onboarding": {
+    "title": "Getting started",
+    "welcome": "Welcome! Your trial is ready.",
+    "progress": "{done} of {total} done",
+    "hide": "Hide",
+    "markDone": "Mark as done",
+    "markOpen": "Reopen",
+    "open": "Open",
+    "auto": "detected",
+    "doneLabel": "Done",
+    "openLabel": "Open",
+    "items": {
+      "company": { "title": "Check company details", "text": "Address, phone and e-mail appear on reports." },
+      "team": { "title": "Create a team", "text": "Teams group technicians for planning and assignment." },
+      "technician": { "title": "Invite a technician", "text": "An invitation link is enough – the person sets their own password." },
+      "first_order": { "title": "Create or import the first work order", "text": "Enter it manually or upload a work order PDF." },
+      "mobile": { "title": "Open the mobile app", "text": "Open /m on your smartphone and add it to the home screen." }
+    }
+  },
+  "export": {
+    "crumb": "Organisation",
+    "title": "Data export",
+    "sub": "All data of your company as a ZIP file",
+    "contents": "Included: customers, contacts, sites, teams, work orders, times, material, reports, milestones and billing as CSV and JSON plus all stored files (documents, report PDFs, photos).",
+    "readOnlyHint": "The export stays available after the trial has expired.",
+    "request": "Create export",
+    "requested": "Export requested. The file is ready in a few minutes – reload the page then.",
+    "listTitle": "Recent exports",
+    "empty": "No export created yet.",
+    "created": "Requested",
+    "state": "Status",
+    "file": "File",
+    "status": { "queued": "Waiting", "running": "In progress", "done": "Ready", "failed": "Failed", "expired": "Expired" },
+    "download": "Download",
+    "expires": "until {date}",
+    "errors": {
+      "export_running": "An export is already running. Please wait until it has finished.",
+      "failed": "The export could not be requested."
+    }
+  },
+  "platform": {
+    "newTrial": "Create trial tenant",
+    "filter": "Filter",
+    "filterAll": "All",
+    "filterTrial": "Trial",
+    "filterFull": "Full",
+    "colPlan": "Version",
+    "badgeFull": "Full version",
+    "badgeUntil": "Trial until {date}",
+    "badgeExpired": "expired – read-only",
+    "badgeDeletion": "Deletion on {date}",
+    "badgeDeleted": "deleted",
+    "wizard": {
+      "crumb": "Platform operations",
+      "title": "Create trial tenant",
+      "sub": "Create a tenant with an end date; the admin receives an invitation to set a password.",
+      "sectionCompany": "1. Company",
+      "sectionAdmin": "2. Administrator",
+      "sectionPeriod": "3. Trial period",
+      "sectionSetup": "4. Setup",
+      "companyName": "Company name",
+      "sector": "Trade (optional)",
+      "adminName": "Name",
+      "adminEmail": "E-mail address",
+      "adminHint": "New addresses receive the existing invitation link (valid for 7 days). Existing accounts are only linked.",
+      "endDate": "Trial until",
+      "endDateHint": "Any date up to one year ahead.",
+      "sampleData": "With sample data",
+      "submit": "Create trial tenant",
+      "submitting": "Creating …",
+      "cancel": "Cancel"
+    },
+    "card": {
+      "title": "Trial",
+      "plan": "Version",
+      "until": "Last day",
+      "state": "State",
+      "stateActive": "running",
+      "stateExpired": "expired – read-only",
+      "stateConverted": "converted to full version",
+      "stateDeleted": "deleted",
+      "deletion": "Deletion",
+      "deletionNone": "not scheduled",
+      "source": "Origin",
+      "sourceSelf": "Self-service signup",
+      "sourcePlatform": "Platform wizard",
+      "extend": "Change / extend end date",
+      "convert": "Convert to full version",
+      "end": "End trial now",
+      "schedule": "Schedule deletion",
+      "cancel": "Cancel deletion",
+      "created": "Trial tenant created.",
+      "invited": "The invitation was sent to the administrator.",
+      "done": "Change saved."
+    },
+    "ops": {
+      "extendTitle": "Change end date",
+      "extendText": "New last trial day. If it lies in the future, the tenant is writable again immediately; reminders are rescheduled.",
+      "convertTitle": "Convert to full version",
+      "convertText": "The tenant stays writable permanently and is never deleted automatically.",
+      "endTitle": "End trial now",
+      "endText": "The tenant is read-only from now on. A scheduled deletion moves to 30 days from today.",
+      "scheduleTitle": "Schedule deletion",
+      "scheduleText": "Deletion 30 days after the end, at the earliest in 7 days (notice mail to the admins).",
+      "cancelTitle": "Cancel deletion",
+      "cancelText": "The tenant will not be deleted automatically. It stays read-only after expiry.",
+      "confirm": "I confirm this change.",
+      "submit": "Execute",
+      "submitting": "Executing …",
+      "close": "Close"
+    },
+    "errors": {
+      "confirm_required": "Please tick the confirmation.",
+      "invalid_input": "Please check your input.",
+      "date_invalid": "Please choose a valid date.",
+      "date_in_past": "The end date must not lie in the past.",
+      "date_too_late": "The end date is more than one year ahead.",
+      "not_a_trial": "This tenant is not a trial.",
+      "tenant_deleted": "The tenant has already been deleted.",
+      "platform_admin_required": "Only platform full administrators may do this.",
+      "tenant not found": "Tenant not found.",
+      "failed": "The action failed."
+    }
+  }
+}
diff --git a/prisma/migrations/20260916100000_testphase/migration.sql b/prisma/migrations/20260916100000_testphase/migration.sql
new file mode 100644
index 0000000..8626077
--- /dev/null
+++ b/prisma/migrations/20260916100000_testphase/migration.sql
@@ -0,0 +1,83 @@
+-- L15 Testphase & Onboarding: Testphasen-Lebenszyklus am Mandanten, Onboarding-Checkliste,
+-- Selbstanmeldungen (Plattform-Tabelle, ohne RLS) und Mandanten-Datenexporte (RLS).
+
+-- CreateEnum
+CREATE TYPE "TenantPlan" AS ENUM ('FULL', 'TRIAL');
+
+-- AlterTable
+ALTER TABLE "tenant_settings" ADD COLUMN     "onboarding" JSONB NOT NULL DEFAULT '{}';
+
+-- AlterTable
+ALTER TABLE "tenants" ADD COLUMN     "converted_at" TIMESTAMP(3),
+ADD COLUMN     "deletion_due_at" TIMESTAMP(3),
+ADD COLUMN     "plan" "TenantPlan" NOT NULL DEFAULT 'FULL',
+ADD COLUMN     "read_only_since" TIMESTAMP(3),
+ADD COLUMN     "trial_deleted_at" TIMESTAMP(3),
+ADD COLUMN     "trial_deletion_notice_at" TIMESTAMP(3),
+ADD COLUMN     "trial_ends_at" TIMESTAMP(3),
+ADD COLUMN     "trial_expired_notice_at" TIMESTAMP(3),
+ADD COLUMN     "trial_reminder_1_at" TIMESTAMP(3),
+ADD COLUMN     "trial_reminder_3_at" TIMESTAMP(3),
+ADD COLUMN     "trial_reminder_7_at" TIMESTAMP(3),
+ADD COLUMN     "trial_source" TEXT,
+ADD COLUMN     "trial_started_at" TIMESTAMP(3);
+
+-- CreateTable
+CREATE TABLE "trial_signups" (
+    "id" TEXT NOT NULL,
+    "status" TEXT NOT NULL DEFAULT 'pending',
+    "company_name" TEXT NOT NULL,
+    "sector" TEXT,
+    "company_size" TEXT,
+    "admin_name" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "password_hash" TEXT NOT NULL,
+    "trial_end_date" TEXT NOT NULL,
+    "sample_data" BOOLEAN NOT NULL DEFAULT true,
+    "modules" TEXT[] DEFAULT ARRAY[]::TEXT[],
+    "locale" TEXT NOT NULL DEFAULT 'de',
+    "token_hash" TEXT NOT NULL,
+    "expires_at" TIMESTAMP(3) NOT NULL,
+    "ip_hash" TEXT,
+    "accepted_terms_at" TIMESTAMP(3) NOT NULL,
+    "confirmed_at" TIMESTAMP(3),
+    "provisioned_tenant_id" TEXT,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "trial_signups_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "tenant_exports" (
+    "id" TEXT NOT NULL,
+    "tenant_id" TEXT NOT NULL,
+    "requested_by_id" TEXT,
+    "status" TEXT NOT NULL DEFAULT 'queued',
+    "storage_key" TEXT,
+    "file_name" TEXT,
+    "bytes" INTEGER,
+    "summary" JSONB,
+    "error" TEXT,
+    "expires_at" TIMESTAMP(3),
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "tenant_exports_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "trial_signups_token_hash_key" ON "trial_signups"("token_hash");
+
+-- CreateIndex
+CREATE INDEX "trial_signups_email_idx" ON "trial_signups"("email");
+
+-- CreateIndex
+CREATE INDEX "trial_signups_status_expires_at_idx" ON "trial_signups"("status", "expires_at");
+
+-- CreateIndex
+CREATE INDEX "tenant_exports_tenant_id_created_at_idx" ON "tenant_exports"("tenant_id", "created_at");
+
+
+-- Mandanten-Tabelle: Row Level Security (docs/craftvia/MIGRATIONS.md)
+SELECT enable_tenant_rls('tenant_exports');
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 7a2ff19..a464fe0 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -44,6 +44,23 @@ model Tenant {
   createdAt DateTime     @default(now()) @map("created_at")
   updatedAt DateTime     @updatedAt @map("updated_at")
 
+  // L15 Testphase: Lebenszyklus (Plattform-Daten, keine Mandanten-RLS)
+  plan                  TenantPlan @default(FULL)
+  trialSource           String?    @map("trial_source") // self_signup | platform
+  trialStartedAt        DateTime?  @map("trial_started_at")
+  /// Exklusives Ende: Beginn des Folgetags des gewählten Enddatums (Europe/Berlin)
+  trialEndsAt           DateTime?  @map("trial_ends_at")
+  convertedAt           DateTime?  @map("converted_at")
+  readOnlySince         DateTime?  @map("read_only_since")
+  /// null = keine automatische Löschung vorgemerkt
+  deletionDueAt         DateTime?  @map("deletion_due_at")
+  trialDeletedAt        DateTime?  @map("trial_deleted_at")
+  trialReminder7At      DateTime?  @map("trial_reminder_7_at")
+  trialReminder3At      DateTime?  @map("trial_reminder_3_at")
+  trialReminder1At      DateTime?  @map("trial_reminder_1_at")
+  trialExpiredNoticeAt  DateTime?  @map("trial_expired_notice_at")
+  trialDeletionNoticeAt DateTime?  @map("trial_deletion_notice_at")
+
   users     User[]
   roles     Role[]
   auditLogs AuditLog[]
@@ -79,6 +96,8 @@ model TenantSettings {
   lotseAddressForm    String?  @map("lotse_address_form")
   // L10b (Spec §31): monthly AI token budget (input + output) per tenant; null = env AI_MONTHLY_TOKEN_LIMIT, 0 = unlimited
   aiMonthlyTokenLimit Int?     @map("ai_monthly_token_limit")
+  // L15: „Erste Schritte"-Checkliste ({ done: string[], hidden: boolean })
+  onboarding          Json     @default("{}")
   createdAt           DateTime @default(now()) @map("created_at")
   updatedAt           DateTime @updatedAt @map("updated_at")
 
@@ -1433,3 +1452,62 @@ model BillingRecord {
   @@index([tenantId, workOrderId])
   @@map("billing_records")
 }
+
+// ── L15 Testphase & Onboarding ─────────────────────────────────────────────────
+
+enum TenantPlan {
+  FULL
+  TRIAL
+}
+
+/// Selbstanmeldung „Kostenlos testen" vor der E-Mail-Bestätigung (Plattform-Tabelle, kein tenant_id).
+/// Keine Klartext-Passwörter/Token: Argon2id-Hash (+ Pepper) bzw. SHA-256 des Tokens; IP nur als HMAC.
+model TrialSignup {
+  id                  String    @id @default(cuid())
+  /// pending | confirmed | superseded | expired | existing_account | failed
+  status              String    @default("pending")
+  companyName         String    @map("company_name")
+  sector              String?
+  companySize         String?   @map("company_size")
+  adminName           String    @map("admin_name")
+  email               String
+  /// Wird nach der Bestätigung geleert.
+  passwordHash        String    @map("password_hash")
+  /// Gewähltes Enddatum YYYY-MM-DD (Europe/Berlin)
+  trialEndDate        String    @map("trial_end_date")
+  sampleData          Boolean   @default(true) @map("sample_data")
+  modules             String[]  @default([])
+  locale              String    @default("de")
+  tokenHash           String    @unique @map("token_hash")
+  expiresAt           DateTime  @map("expires_at")
+  ipHash              String?   @map("ip_hash")
+  acceptedTermsAt     DateTime  @map("accepted_terms_at")
+  confirmedAt         DateTime? @map("confirmed_at")
+  provisionedTenantId String?   @map("provisioned_tenant_id")
+  createdAt           DateTime  @default(now()) @map("created_at")
+  updatedAt           DateTime  @updatedAt @map("updated_at")
+
+  @@index([email])
+  @@index([status, expiresAt])
+  @@map("trial_signups")
+}
+
+/// Daten-Export eines Mandanten (ZIP mit CSV/JSON + Dateien), auch im Nur-Lesen-Zustand.
+model TenantExport {
+  id            String    @id @default(cuid())
+  tenantId      String    @map("tenant_id")
+  requestedById String?   @map("requested_by_id")
+  /// queued | running | done | failed
+  status        String    @default("queued")
+  storageKey    String?   @map("storage_key")
+  fileName      String?   @map("file_name")
+  bytes         Int?
+  summary       Json?
+  error         String?
+  expiresAt     DateTime? @map("expires_at")
+  createdAt     DateTime  @default(now()) @map("created_at")
+  updatedAt     DateTime  @updatedAt @map("updated_at")
+
+  @@index([tenantId, createdAt])
+  @@map("tenant_exports")
+}
diff --git a/scripts/check-module-guards.ts b/scripts/check-module-guards.ts
index 02ff65f..d4edb9d 100644
--- a/scripts/check-module-guards.ts
+++ b/scripts/check-module-guards.ts
@@ -57,6 +57,12 @@ const ACTION_MODULE: Record<string, string> = {
   "account.ts": "EXEMPT",
   "tenant-switch.ts": "EXEMPT",
   "webauthn.ts": "EXEMPT",
+  // L15 Testphase: Plattform-Wizard/-Aktionen (requirePlatformFullAdmin) und Mandanten-Export/Onboarding
+  // (requireSession + requirePermission + requireApiContext; Export bewusst auch im Nur-Lesen-Zustand)
+  "trial-platform.ts": "EXEMPT",
+  "trial-tenant.ts": "EXEMPT",
+  // L15 Testphase: öffentliche Selbstanmeldung ohne Session — jede Action MUSS das Rate-Limit prüfen
+  "trial-signup.ts": "PUBLIC",
 };
 
 const errors: string[] = [];
@@ -118,6 +124,20 @@ for (const entry of readdirSync(ACTIONS_DIR)) {
     continue;
   }
   const src = readFileSync(full, "utf8");
+  if (mapped === "PUBLIC") {
+    // Öffentliche Actions (ohne Session): jede exportierte Action muss ein Rate-Limit prüfen.
+    const exportRe = /export async function (\w+)\s*\(/g;
+    const positions: { name: string; index: number }[] = [];
+    let pm: RegExpExecArray | null;
+    while ((pm = exportRe.exec(src))) positions.push({ name: pm[1], index: pm.index });
+    positions.forEach((p, i) => {
+      const body = src.slice(p.index, i + 1 < positions.length ? positions[i + 1].index : src.length);
+      if (!/(enforceTrialRateLimit|checkRateLimit|consumeRateLimit)\(/.test(body)) {
+        errors.push(`${entry}: öffentliche Action "${p.name}" ohne Rate-Limit-Prüfung.`);
+      }
+    });
+    continue;
+  }
   if (mapped === "EXEMPT") {
     // Auth-Nachweis: ein require*-Guard ODER ein direkter auth()-Aufruf.
     if (!/require(Session|Platform\w*|Permission)|\bauth\(\)/.test(src)) {
diff --git a/scripts/craftvia-worker.ts b/scripts/craftvia-worker.ts
index f2a53de..77614f8 100644
--- a/scripts/craftvia-worker.ts
+++ b/scripts/craftvia-worker.ts
@@ -2,6 +2,7 @@ import "dotenv/config";
 import { Worker } from "bullmq";
 import { JOB_QUEUES, workerConnection, closeJobQueues, scheduleRecurringJobs, type JobPayload } from "../src/server/jobs/queues";
 import { PROCESSORS } from "../src/server/jobs/processors";
+import { isJobBlockedByTrial } from "../src/server/services/trial/jobs";
 
 /** Craftvia background worker: `npm run worker:craftvia`. One BullMQ worker per registered queue. */
 async function main() {
@@ -20,7 +21,14 @@ async function main() {
     const processor = await load();
     const geocode = name === JOB_QUEUES.geocodeSite; // L13: OSM Nominatim policy — max. 1 request/s
     const concurrency = name === JOB_QUEUES.reportPdf ? 2 : geocode ? 1 : 4;
-    const w = new Worker<JobPayload>(name, async (job) => processor(job.data), { connection, concurrency, ...(geocode ? { limiter: { max: 1, duration: 1_000 } } : {}) });
+    const w = new Worker<JobPayload>(name, async (job) => {
+      // L15 Testphase: user-triggered jobs of an expired trial tenant (read-only) are skipped
+      if (await isJobBlockedByTrial(name, job.data)) {
+        console.warn(`[worker] ${name} job ${job.id} skipped: tenant is read-only (trial expired)`);
+        return;
+      }
+      return processor(job.data);
+    }, { connection, concurrency, ...(geocode ? { limiter: { max: 1, duration: 1_000 } } : {}) });
     w.on("failed", (job, err) => console.error(`[worker] ${name} job ${job?.id} failed:`, err.message));
     workers.push(w);
     console.info(`[worker] listening on ${name}`);
diff --git a/scripts/lib/testphase-fixture.ts b/scripts/lib/testphase-fixture.ts
new file mode 100644
index 0000000..4464e4a
--- /dev/null
+++ b/scripts/lib/testphase-fixture.ts
@@ -0,0 +1,109 @@
+// Shared fixture of the L15 tests (scripts/test-testphase-*.ts): zz trial tenants, platform admins,
+// mail capture, zip reader and a complete tenant purge. Not a test itself (runner only picks up
+// scripts/test-*.ts at top level).
+
+import { inflateRawSync } from "node:zlib";
+import { prisma, dbForTenant } from "../../src/server/db";
+import { ROLE_DEFS, type RoleKey } from "../../src/server/rbac";
+import type { ServiceCtx } from "../../src/server/services/context";
+import { offboardTenant } from "../../src/server/dsgvo/deletion";
+import type { enqueueMail } from "../../src/server/mail/service";
+import { provisionTrialTenant } from "../../src/server/services/trial/provision";
+
+export const DOMAIN = "@zz-l15.test";
+export const SLUG_PREFIX = "zz-l15";
+
+export let failures = 0;
+export const ok = (cond: boolean, msg: string) => {
+  console.log(`${cond ? "✓" : "✗ FEHLER"} ${msg}`);
+  if (!cond) failures++;
+};
+
+/** Expects `fn` to throw an error with the given `code` (ServiceError) — or any error when code is "*". */
+export async function expectCode(fn: () => Promise<unknown>, code: string, msg: string) {
+  try {
+    await fn();
+    ok(false, `${msg} — kein Fehler (erwartet ${code})`);
+  } catch (err) {
+    const actual = (err as { code?: string }).code;
+    const pass = code === "*" || actual === code;
+    ok(pass, `${msg}${pass ? "" : ` — Code ${actual ?? (err as Error).message}`}`);
+  }
+}
+
+export function ctxFor(tenantId: string, userId: string, role: RoleKey): ServiceCtx {
+  return { db: dbForTenant(tenantId), tenantId, userId, permissions: new Set<string>(ROLE_DEFS[role].permissions) };
+}
+
+type MailInput = Parameters<typeof enqueueMail>[0];
+export function captureMail() {
+  const sent: MailInput[] = [];
+  const fn = (async (input: MailInput) => {
+    sent.push(input);
+    return { status: "queued", mailLogId: `zz-${sent.length}` };
+  }) as typeof enqueueMail;
+  return { sent, fn };
+}
+
+export async function platformAdmin(role: "full" | "readonly" = "full") {
+  return prisma.platformAdmin.create({
+    data: { email: `platform-${role}-${Math.random().toString(36).slice(2, 8)}${DOMAIN}`, passwordHash: "x", name: `ZZ Platform ${role}`, role },
+  });
+}
+
+/** Trial tenant through the real provisioning (slug zz-l15-<name>). */
+export async function trialTenant(name: string, endDateKey: string, opts: { sampleData?: boolean } = {}) {
+  const slugPart = name.toLowerCase().replace(/[^a-z0-9]+/g, "-");
+  return provisionTrialTenant({
+    companyName: `ZZ L15 ${name}`,
+    admin: { name: `Admin ${name}`, email: `admin-${slugPart}${DOMAIN}`, passwordHash: "x" },
+    endDateKey,
+    sampleData: opts.sampleData ?? false,
+    source: "platform",
+  });
+}
+
+export async function addMember(tenantId: string, local: string, role: RoleKey) {
+  const email = `${local}${DOMAIN}`;
+  const identity = await prisma.identity.upsert({ where: { email }, update: {}, create: { email, passwordHash: "x" } });
+  const roleRow = await prisma.role.findUniqueOrThrow({ where: { tenantId_key: { tenantId, key: role } } });
+  return prisma.user.create({ data: { tenantId, identityId: identity.id, email, name: local, userRoles: { create: [{ roleId: roleRow.id }] } } });
+}
+
+/** Removes a test tenant completely (offboarding of all tenant tables + rows around the tenant). */
+export async function purgeTenant(tenantId: string) {
+  const exists = await prisma.tenant.findUnique({ where: { id: tenantId }, select: { id: true } });
+  if (!exists) return;
+  await offboardTenant(tenantId, { reason: "zz-test-cleanup", purgeFiles: false });
+  await prisma.auditLog.deleteMany({ where: { tenantId } });
+  await prisma.mailLog.deleteMany({ where: { tenantId } });
+  await prisma.deletionCertificate.deleteMany({ where: { tenantId } });
+  await prisma.trialSignup.deleteMany({ where: { provisionedTenantId: tenantId } });
+  await prisma.tenant.delete({ where: { id: tenantId } });
+}
+
+export async function cleanupL15() {
+  const tenants = await prisma.tenant.findMany({ where: { slug: { startsWith: SLUG_PREFIX } }, select: { id: true } });
+  for (const t of tenants) await purgeTenant(t.id);
+  await prisma.trialSignup.deleteMany({ where: { email: { endsWith: DOMAIN } } });
+  await prisma.identity.deleteMany({ where: { email: { endsWith: DOMAIN }, memberships: { none: {} } } });
+  await prisma.platformAdmin.deleteMany({ where: { email: { endsWith: DOMAIN } } });
+}
+
+/** Minimal ZIP reader for the export tests (deflate entries written by src/server/backup/zip.ts). */
+export function readZip(buf: Buffer): Map<string, Buffer> {
+  const out = new Map<string, Buffer>();
+  let offset = 0;
+  while (offset + 30 <= buf.length && buf.readUInt32LE(offset) === 0x04034b50) {
+    const method = buf.readUInt16LE(offset + 8);
+    const compressed = buf.readUInt32LE(offset + 18);
+    const nameLen = buf.readUInt16LE(offset + 26);
+    const extraLen = buf.readUInt16LE(offset + 28);
+    const name = buf.subarray(offset + 30, offset + 30 + nameLen).toString("utf8");
+    const start = offset + 30 + nameLen + extraLen;
+    const data = buf.subarray(start, start + compressed);
+    out.set(name, method === 8 ? inflateRawSync(data) : Buffer.from(data));
+    offset = start + compressed;
+  }
+  return out;
+}
diff --git a/scripts/smoke-testphase.ts b/scripts/smoke-testphase.ts
new file mode 100644
index 0000000..5864f98
--- /dev/null
+++ b/scripts/smoke-testphase.ts
@@ -0,0 +1,152 @@
+/**
+ * L15 Testphase — HTTP smoke against a running server, WITHOUT typing passwords (session cookies are
+ * built like scripts/smoke-auth.ts). Creates zz trial tenants (expired + running) through the real
+ * services, checks the public wizard pages, banners, the "Erste Schritte" card, the export page, the
+ * central write lock on real /api/v1 routes (customers, sync, uploads, work-order documents,
+ * backoffice upload) and the platform pages; removes the zz tenants afterwards.
+ *
+ * Usage: BASE=http://localhost:3115 npx tsx scripts/smoke-testphase.ts
+ */
+import "dotenv/config";
+import { encode } from "next-auth/jwt";
+import { prisma } from "../src/server/db";
+import { finalizeIdentityLogin } from "../src/server/auth";
+import { addDaysToKey, todayKey } from "../src/lib/trial/dates";
+import { endTrialNow } from "../src/server/services/trial/admin";
+import { addMember, cleanupL15, platformAdmin, trialTenant } from "./lib/testphase-fixture";
+
+const BASE = process.env.BASE ?? "http://localhost:3115";
+const SECURE = BASE.startsWith("https");
+const COOKIE = SECURE ? "__Secure-authjs.session-token" : "authjs.session-token";
+const PLATFORM_COOKIE = `${SECURE ? "__Secure-" : ""}platform-authjs.session-token`;
+
+type Check = { label?: string; path: string; method?: string; body?: BodyInit; headers?: Record<string, string>; expect?: number[]; mustContain?: string[]; mustNotContain?: string[]; redirectTo?: string };
+
+async function tenantCookie(email: string, slug: string): Promise<string> {
+  const identity = await prisma.identity.findUniqueOrThrow({ where: { email } });
+  const user = await finalizeIdentityLogin(identity.id, slug);
+  if (!user) throw new Error(`no membership for ${email} in ${slug}`);
+  const token = {
+    sub: user.id, name: user.name, email: user.email, userId: user.id, identityId: user.identityId, tenantId: user.tenantId, tenantSlug: user.tenantSlug,
+    activeMembershipId: user.activeMembershipId, memberships: user.memberships, roles: user.roles, permissions: user.permissions, isPlatformAdmin: user.isPlatformAdmin, mfaEnrolled: user.mfaEnrolled,
+  };
+  return `${COOKIE}=${await encode({ token, secret: process.env.AUTH_SECRET!, salt: COOKIE, maxAge: 1800 })}`;
+}
+
+async function platformCookie(adminId: string): Promise<string> {
+  const token = { sub: adminId, userId: adminId, isPlatformAdmin: true, mfaEnrolled: false };
+  return `${PLATFORM_COOKIE}=${await encode({ token, secret: process.env.AUTH_SECRET!, salt: PLATFORM_COOKIE, maxAge: 1800 })}`;
+}
+
+function multipart(fields: Record<string, string>, file?: { name: string; type: string; bytes: Buffer }): FormData {
+  const fd = new FormData();
+  for (const [k, v] of Object.entries(fields)) fd.set(k, v);
+  if (file) fd.set("file", new Blob([new Uint8Array(file.bytes)], { type: file.type }), file.name);
+  return fd;
+}
+
+async function main() {
+  await cleanupL15();
+  const today = todayKey();
+  const expired = await trialTenant("Smoke Abgelaufen", addDaysToKey(today, 5), { sampleData: true });
+  const running = await trialTenant("Smoke Laufend", addDaysToKey(today, 3), { sampleData: true });
+  const tech = await addMember(expired.tenantId, "tech-smoke", "technician");
+  const admin = await platformAdmin("full");
+  await endTrialNow({ platformAdminId: admin.id }, expired.tenantId);
+  const expiredSlug = (await prisma.tenant.findUniqueOrThrow({ where: { id: expired.tenantId } })).slug;
+  const runningSlug = (await prisma.tenant.findUniqueOrThrow({ where: { id: running.tenantId } })).slug;
+  const order = await prisma.workOrder.findFirstOrThrow({ where: { tenantId: expired.tenantId, status: "assigned" } });
+  const pdf = Buffer.from("%PDF-1.4\n%%EOF\n");
+
+  const plans: { who: string; cookie: string; checks: Check[] }[] = [
+    {
+      who: "anonym",
+      cookie: "",
+      checks: [
+        { path: "/testen", mustContain: ["Craftvia kostenlos testen", "Firmenname", "Schritt 1 von 5", "Nutzungsbedingungen"] },
+        { path: "/testen/bestaetigen?token=ungueltig", mustContain: ["ungültig"] },
+        { path: "/testen/nutzungsbedingungen", mustContain: ["Nutzungsbedingungen", "Platzhalter"] },
+        { path: "/testen/datenschutz", mustContain: ["Datenschutz"] },
+        { path: "/dashboard", expect: [307], redirectTo: "/login" },
+        { path: "/settings/export", expect: [307], redirectTo: "/login" },
+      ],
+    },
+    {
+      who: `Admin abgelaufen (${expiredSlug})`,
+      cookie: await tenantCookie(`admin-smoke-abgelaufen@zz-l15.test`, expiredSlug),
+      checks: [
+        { path: "/dashboard", mustContain: ["Testphase abgelaufen – nur Lesezugriff.", "Daten werden am", "Daten exportieren", 'data-trial-banner="expired"'] },
+        { path: "/customers", mustContain: ["Testphase abgelaufen", "Hausverwaltung Musterhof"] },
+        { path: "/settings/export", mustContain: ["Datenexport", "Export erstellen", "auch nach Ablauf"] },
+        { path: "/api/v1/customers", mustContain: ['"data"'] },
+        { label: "POST /api/v1/customers → gesperrt", path: "/api/v1/customers", method: "POST", body: JSON.stringify({ companyName: "ZZ Smoke" }), headers: { "content-type": "application/json" }, expect: [422], mustContain: ["trial_expired", "nur Lesezugriff"] },
+        { label: "POST /api/v1/work-orders/[id]/documents → gesperrt", path: `/api/v1/work-orders/${order.id}/documents`, method: "POST", body: multipart({ category: "other", visibility: "team" }, { name: "a.pdf", type: "application/pdf", bytes: pdf }), headers: { accept: "application/json" }, expect: [422], mustContain: ["trial_expired"] },
+        { label: "POST /documents/upload → gesperrt", path: "/documents/upload", method: "POST", body: multipart({ category: "other", visibility: "team" }, { name: "a.pdf", type: "application/pdf", bytes: pdf }), headers: { accept: "application/json" }, expect: [422], mustContain: ["trial_expired"] },
+        { path: "/settings/export/unbekannt", expect: [404] },
+      ],
+    },
+    {
+      who: `Monteur abgelaufen (${expiredSlug})`,
+      cookie: await tenantCookie(tech.email, expiredSlug),
+      checks: [
+        { path: "/m", mustContain: ["Testphase abgelaufen – nur Lesezugriff."], mustNotContain: ["Daten exportieren"] },
+        { path: "/api/v1/field/bundle", mustContain: ['"orders"'] },
+        { label: "POST /api/v1/sync → gesperrt", path: "/api/v1/sync", method: "POST", body: JSON.stringify({ deviceId: "zz-smoke", operations: [] }), headers: { "content-type": "application/json" }, expect: [422], mustContain: ["trial_expired"] },
+        { label: "POST /api/v1/uploads → gesperrt", path: "/api/v1/uploads", method: "POST", body: multipart({ clientId: "7c1d6a0e-3b1f-4c55-9d2a-00000000f016", workOrderId: order.id, kind: "photo" }, { name: "a.jpg", type: "image/jpeg", bytes: Buffer.from([0xff, 0xd8, 0xff, 0xd9]) }), expect: [422], mustContain: ["trial_expired"] },
+        { path: "/settings/export", expect: [307], redirectTo: "/dashboard" },
+      ],
+    },
+    {
+      who: `Admin laufend (${runningSlug})`,
+      cookie: await tenantCookie(`admin-smoke-laufend@zz-l15.test`, runningSlug),
+      checks: [
+        { path: "/dashboard", mustContain: ["Testphase endet in 3 Tagen.", "Erste Schritte", "von 5 erledigt", "Team anlegen", "Monteur einladen"] },
+        { path: "/dashboard?welcome=1", mustContain: ["Willkommen! Ihre Testphase ist eingerichtet."] },
+        { path: "/settings/export", mustContain: ["Datenexport"] },
+      ],
+    },
+    {
+      who: "Plattform-Admin",
+      cookie: await platformCookie(admin.id),
+      checks: [
+        { path: "/admin", mustContain: ["Testmandant anlegen", "ZZ L15 Smoke Abgelaufen", "abgelaufen – nur lesen", "Löschung am", "Test bis"] },
+        { path: "/admin?plan=trial", mustContain: ["ZZ L15 Smoke Laufend"], mustNotContain: ["Musterbau Haustechnik"] },
+        { path: "/admin?plan=full", mustNotContain: ["ZZ L15 Smoke Laufend"] },
+        { path: "/admin/trial", mustContain: ["Testmandant anlegen", "Testphase bis", "Mit Beispieldaten"] },
+        { path: `/admin/${expired.tenantId}`, mustContain: ["Testphase", "abgelaufen – nur lesen", "In Vollversion umwandeln", "Enddatum ändern / verlängern", "Löschung abbrechen"] },
+        { path: `/admin/${expired.tenantId}?trial=extend`, mustContain: ["Enddatum ändern", "Ich bestätige diese Änderung."] },
+        { path: `/admin/${running.tenantId}?trial=end`, mustContain: ["Testphase sofort beenden"] },
+      ],
+    },
+  ];
+
+  let failures = 0;
+  let total = 0;
+  for (const plan of plans) {
+    console.log(`\n== ${plan.who}`);
+    for (const c of plan.checks) {
+      total++;
+      const res = await fetch(BASE + c.path, { method: c.method ?? "GET", body: c.body, headers: { ...(plan.cookie ? { cookie: plan.cookie } : {}), ...c.headers }, redirect: "manual", signal: AbortSignal.timeout(120_000) });
+      const body = res.status >= 300 && res.status < 400 ? "" : await res.text();
+      const expect = c.expect ?? [200];
+      const loc = res.headers.get("location");
+      const okRedirect = !c.redirectTo || (loc ? new URL(loc, BASE).pathname === c.redirectTo : false);
+      const errorPage = res.status === 200 && /Application error|Internal Server Error|Unhandled Runtime Error/i.test(body);
+      const missing = (c.mustContain ?? []).filter((s) => !body.includes(s));
+      const leaked = (c.mustNotContain ?? []).filter((s) => body.includes(s));
+      const pass = expect.includes(res.status) && okRedirect && !errorPage && missing.length === 0 && leaked.length === 0;
+      if (!pass) failures++;
+      console.log(`${pass ? "✓" : "✗"} ${String(res.status).padEnd(3)} ${c.label ?? `${c.method ?? "GET"} ${c.path}`}${loc ? ` → ${loc}` : ""}${missing.length ? ` [fehlt: ${missing.join(" | ")}]` : ""}${leaked.length ? ` [unerwartet: ${leaked.join(" | ")}]` : ""}`);
+    }
+  }
+  await cleanupL15();
+  await prisma.$disconnect();
+  console.log(failures ? `\n${failures} von ${total} Prüfungen fehlgeschlagen` : `\nOK — ${total} Prüfungen`);
+  process.exit(failures ? 1 : 0);
+}
+
+main().catch(async (err) => {
+  console.error(err);
+  await cleanupL15().catch(() => undefined);
+  process.exit(1);
+});
diff --git a/scripts/test-e2e-tenant-isolation.ts b/scripts/test-e2e-tenant-isolation.ts
index f201d8f..0d9da70 100644
--- a/scripts/test-e2e-tenant-isolation.ts
+++ b/scripts/test-e2e-tenant-isolation.ts
@@ -136,6 +136,7 @@ async function createModelRows(A: TenantFixture): Promise<Rows> {
   // L14 Abrechnungsübersicht
   put("WorkOrderMilestone", (await prisma.workOrderMilestone.create({ data: { tenantId: t, workOrderId: wo.id, title: "ZZ" } })).id, { title: MARK });
   put("BillingRecord", (await prisma.billingRecord.create({ data: { tenantId: t, workOrderId: wo.id, kind: "order_completion", periodFrom: new Date(Date.now() - 3600_000), periodTo: new Date() } })).id, { invoiceNumber: MARK });
+  put("TenantExport", (await prisma.tenantExport.create({ data: { tenantId: t, status: "done", fileName: "zz.zip" } })).id, { fileName: MARK }); // L15 Testphase
   return rows;
 }
 
diff --git a/scripts/test-testphase-lifecycle.ts b/scripts/test-testphase-lifecycle.ts
new file mode 100644
index 0000000..5f53d87
--- /dev/null
+++ b/scripts/test-testphase-lifecycle.ts
@@ -0,0 +1,216 @@
+// Lane L15 „Testphase & Onboarding" — Lebenszyklus-Job und Plattform-Aktionen:
+//  Erinnerungen 7/3/1 Tage genau einmal (auch nach verpasstem Lauf), Ablaufmail, Löschhinweis,
+//  Löschung nur fällig + TRIAL (über das bestehende Offboarding inkl. Speicher), umgewandelte,
+//  verlängerte oder abgebrochene Mandanten bleiben erhalten, Mandant B unberührt;
+//  Plattform-Rechte (Mandanten-Admin/Read-only-Admin können die Testphase nicht ändern),
+//  Plattform-Wizard mit Einladung, Mail-Vorlagen, Worker-Registrierung.
+//
+// Lauf: npx tsx scripts/test-testphase-lifecycle.ts (lokale Postgres-DB + Garage aus .env)
+
+import "dotenv/config";
+import { readFileSync } from "node:fs";
+import { prisma, dbForTenant } from "../src/server/db";
+import { PROCESSORS } from "../src/server/jobs/processors";
+import { renderTemplate, TRIAL_TEMPLATE_KEYS, type TemplateVars } from "../src/server/mail/templates";
+import { addDaysToKey, todayKey, trialEndInstant } from "../src/lib/trial/dates";
+import {
+  cancelTrialDeletion,
+  changeTrialEndDate,
+  convertTenantToFull,
+  createPlatformTrialTenant,
+  endTrialNow,
+  scheduleTrialDeletion,
+} from "../src/server/services/trial/admin";
+import { deleteTrialTenant, runTrialLifecycle } from "../src/server/services/trial/lifecycle";
+import { getTrialState } from "../src/server/services/trial/state";
+import { storage } from "../src/server/storage/adapter";
+import { readStoredBytes } from "../src/server/services/documents/read";
+import { captureMail, cleanupL15, ctxFor, DOMAIN, expectCode, failures, ok, platformAdmin, trialTenant } from "./lib/testphase-fixture";
+
+const HOUR = 3600_000;
+const DAY = 24 * HOUR;
+
+async function main() {
+  await cleanupL15();
+  const full = await platformAdmin("full");
+  const readonly = await platformAdmin("readonly");
+  const actor = { platformAdminId: full.id };
+  const today = todayKey();
+
+  console.log("\n— Erinnerungen 7/3/1 genau einmal —");
+  const R = await trialTenant("Lifecycle R", addDaysToKey(today, 7));
+  const endR = trialEndInstant(addDaysToKey(today, 7));
+  const at = (dayOffset: number) => new Date(endR.getTime() - DAY * 7 + dayOffset * DAY - 12 * HOUR); // noon-ish of "today + offset"
+  const mail = captureMail();
+  const run = (now: Date, ids: string[]) => runTrialLifecycle({ now, tenantIds: ids, sendMail: mail.fn });
+  const count = (tpl: string, tenantId: string) => mail.sent.filter((m) => m.template === tpl && m.tenantId === tenantId).length;
+
+  await run(at(0), [R.tenantId]);
+  ok(count("trial_reminder", R.tenantId) === 1 && (mail.sent[0].vars as { daysLeft: number }).daysLeft === 7, "7 Tage vorher: Erinnerung an den Admin");
+  ok(mail.sent[0].to === `admin-lifecycle-r${DOMAIN}`, "Empfänger = aktiver Mandanten-Admin");
+  await run(at(0), [R.tenantId]);
+  await run(at(1), [R.tenantId]);
+  ok(count("trial_reminder", R.tenantId) === 1, "zweiter Lauf / Folgetag: keine weitere Erinnerung");
+  await run(at(4), [R.tenantId]);
+  ok(count("trial_reminder", R.tenantId) === 2, "3 Tage vorher: zweite Erinnerung");
+  await run(at(4), [R.tenantId]);
+  await run(at(6), [R.tenantId]);
+  await run(at(6), [R.tenantId]);
+  ok(count("trial_reminder", R.tenantId) === 3, "1 Tag vorher: dritte Erinnerung, jeweils genau einmal");
+  const markers = await prisma.tenant.findUniqueOrThrow({ where: { id: R.tenantId } });
+  ok(!!markers.trialReminder7At && !!markers.trialReminder3At && !!markers.trialReminder1At, "Versandmarker gesetzt");
+
+  const R2 = await trialTenant("Lifecycle R2", addDaysToKey(today, 2));
+  await run(new Date(), [R2.tenantId]);
+  const r2 = await prisma.tenant.findUniqueOrThrow({ where: { id: R2.tenantId } });
+  ok(count("trial_reminder", R2.tenantId) === 1 && !!r2.trialReminder7At && !!r2.trialReminder3At && !r2.trialReminder1At, "verpasster Lauf: nur die nächstliegende Erinnerung, ältere als erledigt markiert");
+
+  console.log("\n— Ablauf, Löschhinweis, Löschung —");
+  const endExpired = new Date(endR.getTime() + HOUR);
+  await run(endExpired, [R.tenantId]);
+  await run(endExpired, [R.tenantId]);
+  ok(count("trial_expired", R.tenantId) === 1, "Ablaufmail am Endtag genau einmal");
+  const expiredRow = await prisma.tenant.findUniqueOrThrow({ where: { id: R.tenantId } });
+  ok(expiredRow.readOnlySince?.getTime() === endR.getTime(), "readOnlySince = Ende der Testphase");
+  const expiredMail = mail.sent.find((m) => m.template === "trial_expired" && m.tenantId === R.tenantId)!;
+  ok(!!(expiredMail.vars as { deletionDate?: string }).deletionDate && (expiredMail.vars as { exportUrl: string }).exportUrl.endsWith("/settings/export"), "Ablaufmail nennt Löschdatum und Export");
+  const due = expiredRow.deletionDueAt!;
+  ok(due.getTime() === endR.getTime() + 30 * DAY, "Löschung 30 Tage nach Ende fällig");
+  await run(new Date(due.getTime() - 8 * DAY), [R.tenantId]);
+  ok(count("trial_deletion_notice", R.tenantId) === 0, "8 Tage vor Löschung noch kein Hinweis");
+  await run(new Date(due.getTime() - 6 * DAY), [R.tenantId]);
+  await run(new Date(due.getTime() - 5 * DAY), [R.tenantId]);
+  ok(count("trial_deletion_notice", R.tenantId) === 1, "Löschhinweis 7 Tage vorher genau einmal");
+
+  // tenant data + stored object that must disappear
+  const dbR = dbForTenant(R.tenantId);
+  const customerR = await dbR.customer.create({ data: { tenantId: R.tenantId, companyName: "ZZ Löschkunde", city: "Bremen" } });
+  const stored = await storage.put({ tenantId: R.tenantId, filename: "zz-loeschen.txt", contentType: "text/plain", bytes: Buffer.from("zz") });
+  const identityR = await prisma.user.findFirstOrThrow({ where: { tenantId: R.tenantId }, select: { identityId: true } });
+
+  // untouched neighbours: FULL tenant B (via provisioning then converted), not due trial B2
+  const B = await trialTenant("Lifecycle B", addDaysToKey(today, 3));
+  await convertTenantToFull(actor, B.tenantId);
+  const customerB = await dbForTenant(B.tenantId).customer.create({ data: { tenantId: B.tenantId, companyName: "ZZ Kunde B", city: "Kiel" } });
+  const B2 = await trialTenant("Lifecycle B2", addDaysToKey(today, 20));
+
+  ok(!(await deleteTrialTenant(R.tenantId, { now: new Date(due.getTime() - HOUR) })).deleted, "vor Fälligkeit: keine Löschung");
+  const summary = await run(new Date(due.getTime() + HOUR), [R.tenantId, B.tenantId, B2.tenantId]);
+  ok(summary.deleted.length === 1 && summary.deleted[0] === R.tenantId, "fälliger Testmandant gelöscht, nur dieser");
+  const gone = await prisma.tenant.findUniqueOrThrow({ where: { id: R.tenantId } });
+  ok(gone.status === "ARCHIVED" && !!gone.trialDeletedAt && gone.deletionDueAt === null, "Mandant archiviert, Löschung protokolliert am Mandanten");
+  ok((await prisma.customer.count({ where: { tenantId: R.tenantId } })) === 0 && (await prisma.user.count({ where: { tenantId: R.tenantId } })) === 0 && (await prisma.role.count({ where: { tenantId: R.tenantId } })) === 0, "alle Mandanten-Tabellen geleert (Topologie)");
+  ok((await prisma.identity.findUnique({ where: { id: identityR.identityId } })) === null, "Identity ohne weitere Mitgliedschaft gelöscht");
+  ok((await readStoredBytes(stored.storageKey)) === null, "Speicherobjekte unter <tenantId>/ entfernt");
+  ok((await prisma.deletionCertificate.count({ where: { tenantId: R.tenantId, scope: "tenant" } })) === 1, "Löschnachweis erstellt");
+  ok((await prisma.auditLog.count({ where: { scope: "platform", entity: "trial_tenant", entityId: R.tenantId, action: "delete" } })) === 1, "Plattform-Audit der Löschung");
+  ok((await prisma.customer.findUnique({ where: { id: customerR.id } })) === null, "Kunde des gelöschten Mandanten entfernt");
+  ok((await dbForTenant(B.tenantId).customer.count({ where: { id: customerB.id } })) === 1 && (await prisma.tenant.findUniqueOrThrow({ where: { id: B.tenantId } })).status === "ACTIVE", "Mandant B (Vollversion) unberührt");
+  ok((await prisma.tenant.findUniqueOrThrow({ where: { id: B2.tenantId } })).trialDeletedAt === null, "nicht fälliger Testmandant unberührt");
+  await run(new Date(due.getTime() + 2 * HOUR), [R.tenantId]);
+  ok((await prisma.auditLog.count({ where: { scope: "platform", entity: "trial_tenant", entityId: R.tenantId } })) === 1, "gelöschter Mandant wird nicht erneut verarbeitet");
+
+  console.log("\n— Umwandeln, Verlängern, Abbrechen verhindern die Löschung —");
+  const X = await trialTenant("Lifecycle X", addDaysToKey(today, 1));
+  await endTrialNow(actor, X.tenantId);
+  const xDue = (await prisma.tenant.findUniqueOrThrow({ where: { id: X.tenantId } })).deletionDueAt!;
+  await convertTenantToFull(actor, X.tenantId);
+  const xRow = await prisma.tenant.findUniqueOrThrow({ where: { id: X.tenantId } });
+  ok(xRow.plan === "FULL" && !!xRow.convertedAt && xRow.deletionDueAt === null && !(await getTrialState(X.tenantId)).readOnly, "Umwandeln: Vollversion, schreibbar, keine Löschung vorgemerkt");
+  await run(new Date(xDue.getTime() + DAY), [X.tenantId]);
+  ok(!(await deleteTrialTenant(X.tenantId, { now: new Date(xDue.getTime() + DAY) })).deleted && (await prisma.tenant.findUniqueOrThrow({ where: { id: X.tenantId } })).status === "ACTIVE", "umgewandelter Mandant wird nie gelöscht (Doppelprüfung)");
+
+  const Y = await trialTenant("Lifecycle Y", addDaysToKey(today, 1));
+  await endTrialNow(actor, Y.tenantId);
+  const yOldDue = (await prisma.tenant.findUniqueOrThrow({ where: { id: Y.tenantId } })).deletionDueAt!;
+  await changeTrialEndDate(actor, Y.tenantId, addDaysToKey(today, 60));
+  const yRow = await prisma.tenant.findUniqueOrThrow({ where: { id: Y.tenantId } });
+  ok(yRow.trialEndsAt!.getTime() === trialEndInstant(addDaysToKey(today, 60)).getTime() && yRow.deletionDueAt!.getTime() > yOldDue.getTime() && yRow.readOnlySince === null && yRow.trialExpiredNoticeAt === null, "Verlängern: neues Ende, Löschtermin verschoben, Marker zurückgesetzt");
+  await run(new Date(yOldDue.getTime() + DAY), [Y.tenantId]);
+  ok((await prisma.tenant.findUniqueOrThrow({ where: { id: Y.tenantId } })).trialDeletedAt === null, "verlängerter Mandant nach altem Löschtermin nicht gelöscht");
+
+  const Z = await trialTenant("Lifecycle Z", addDaysToKey(today, 1));
+  await endTrialNow(actor, Z.tenantId);
+  const zDue = (await prisma.tenant.findUniqueOrThrow({ where: { id: Z.tenantId } })).deletionDueAt!;
+  await cancelTrialDeletion(actor, Z.tenantId);
+  await run(new Date(zDue.getTime() + 10 * DAY), [Z.tenantId]);
+  const zRow = await prisma.tenant.findUniqueOrThrow({ where: { id: Z.tenantId } });
+  ok(zRow.trialDeletedAt === null && (await getTrialState(Z.tenantId, new Date(zDue.getTime() + 10 * DAY))).readOnly, "Löschung abgebrochen: bleibt erhalten, weiter nur lesbar");
+  await scheduleTrialDeletion(actor, Z.tenantId);
+  const zScheduled = (await prisma.tenant.findUniqueOrThrow({ where: { id: Z.tenantId } })).deletionDueAt!;
+  ok(zScheduled.getTime() >= Date.now() + 7 * DAY - HOUR, "Löschung vormerken: frühestens in 7 Tagen (Hinweis möglich)");
+  await changeTrialEndDate(actor, Z.tenantId, addDaysToKey(today, 3));
+  ok((await prisma.tenant.findUniqueOrThrow({ where: { id: Z.tenantId } })).deletionDueAt!.getTime() === trialEndInstant(addDaysToKey(today, 3)).getTime() + 30 * DAY, "vorgemerkte Löschung folgt dem neuen Enddatum");
+  const auditZ = await prisma.auditLog.findMany({ where: { tenantId: Z.tenantId, scope: "platform", entity: { startsWith: "trial_" } }, orderBy: { createdAt: "asc" } });
+  ok(auditZ.map((a) => a.entity).join(",") === "trial_ended,trial_deletion_cancelled,trial_deletion_scheduled,trial_end_date" && auditZ.every((a) => a.actorId === full.id && a.before && a.after), "Plattform-Audit je Aktion mit before/after");
+
+  console.log("\n— Plattform-Rechte —");
+  const P = await trialTenant("Lifecycle P", addDaysToKey(today, 5));
+  const tenantAdminActor = { platformAdminId: P.adminUserId };
+  const endBefore = (await prisma.tenant.findUniqueOrThrow({ where: { id: P.tenantId } })).trialEndsAt!.getTime();
+  await expectCode(() => changeTrialEndDate(tenantAdminActor, P.tenantId, addDaysToKey(today, 30)), "forbidden", "Mandanten-Admin kann die Testphase nicht verlängern");
+  await expectCode(() => convertTenantToFull(tenantAdminActor, P.tenantId), "forbidden", "Mandanten-Admin kann nicht umwandeln");
+  await expectCode(() => cancelTrialDeletion(tenantAdminActor, P.tenantId), "forbidden", "Mandanten-Admin kann die Löschung nicht abbrechen");
+  await expectCode(() => changeTrialEndDate({ platformAdminId: readonly.id }, P.tenantId, addDaysToKey(today, 30)), "forbidden", "Read-only-Plattform-Admin kann nichts ändern");
+  await expectCode(() => createPlatformTrialTenant(tenantAdminActor, { companyName: "ZZ L15 Hack", adminName: "Hack", adminEmail: `hack${DOMAIN}`, endDate: addDaysToKey(today, 5), sampleData: false }), "forbidden", "Mandanten-Admin kann keinen Testmandanten anlegen");
+  await expectCode(() => changeTrialEndDate(actor, P.tenantId, addDaysToKey(today, -1)), "invalid", "Enddatum in der Vergangenheit → invalid");
+  await expectCode(() => changeTrialEndDate(actor, P.tenantId, addDaysToKey(today, 400)), "invalid", "Enddatum > 1 Jahr → invalid");
+  await expectCode(() => changeTrialEndDate(actor, X.tenantId, addDaysToKey(today, 10)), "invalid", "Vollversion: keine Testphasen-Aktion");
+  ok((await prisma.tenant.findUniqueOrThrow({ where: { id: P.tenantId } })).trialEndsAt!.getTime() === endBefore, "Testphase von P unverändert");
+  const { trialLifecycleAction } = await import("../src/server/actions/trial-platform");
+  const fd = new FormData();
+  fd.set("confirm", "on");
+  fd.set("endDate", addDaysToKey(today, 40));
+  await expectCode(() => trialLifecycleAction(P.tenantId, "extend", { status: "idle" }, fd), "*", "Action ohne Plattform-Session wird abgewiesen");
+  ok((await prisma.tenant.findUniqueOrThrow({ where: { id: P.tenantId } })).trialEndsAt!.getTime() === endBefore, "… und ändert nichts");
+  const platformSrc = readFileSync("src/server/actions/trial-platform.ts", "utf8");
+  const exportsP = [...platformSrc.matchAll(/export async function (\w+)/g)].map((m) => m[1]);
+  ok(exportsP.length === 2 && exportsP.every((n) => new RegExp(`export async function ${n}[\\s\\S]*?await requirePlatformFullAdmin\\(\\)`).test(platformSrc)), "jede Plattform-Action verlangt einen Plattform-Voll-Admin");
+  const tenantSrc = readFileSync("src/server/actions/trial-tenant.ts", "utf8");
+  ok(!/services\/trial\/admin/.test(tenantSrc) && !/trialEndsAt|deletionDueAt|convertedAt/.test(tenantSrc), "Mandanten-Actions enthalten keine Testphasen-Änderung");
+
+  console.log("\n— Plattform-Wizard mit Einladung —");
+  const invites: { to: string; tenantId: string }[] = [];
+  const created = await createPlatformTrialTenant(actor, { companyName: "ZZ L15 Wizard GmbH", sector: "Elektro", adminName: "Wanda Wizard", adminEmail: `wanda${DOMAIN}`, endDate: addDaysToKey(today, 45), sampleData: true }, { invite: async (i) => void invites.push({ to: i.to, tenantId: i.tenantId }) });
+  const w = await prisma.tenant.findUniqueOrThrow({ where: { id: created.tenantId } });
+  ok(w.plan === "TRIAL" && w.trialSource === "platform" && w.trialEndsAt!.getTime() === trialEndInstant(addDaysToKey(today, 45)).getTime(), "Wizard: Testmandant mit frei gesetztem Enddatum (> TRIAL_MAX_DAYS)");
+  ok(created.invited && invites.length === 1 && invites[0].to === `wanda${DOMAIN}` && invites[0].tenantId === w.id, "Einladung über den bestehenden Einladungsweg");
+  const wId = await prisma.identity.findUniqueOrThrow({ where: { email: `wanda${DOMAIN}` } });
+  ok(wId.mustChangePassword, "neue Identity: Passwort wird über die Einladung gesetzt");
+  ok((await prisma.authToken.count({ where: { principalId: wId.id, type: "invitation", usedAt: null } })) === 1, "Einladungs-Token ausgestellt (Hash)");
+  ok((await dbForTenant(w.id).workOrder.count()) === 4, "Wizard mit Beispieldaten");
+  const again = await createPlatformTrialTenant(actor, { companyName: "ZZ L15 Wizard Zwei", adminName: "Wanda Wizard", adminEmail: `wanda${DOMAIN}`, endDate: addDaysToKey(today, 10), sampleData: false }, { invite: async (i) => void invites.push({ to: i.to, tenantId: i.tenantId }) });
+  ok(!again.invited && invites.length === 1 && again.identityId === wId.id, "bestehende Person: nur verknüpft, keine neue Einladung");
+  ok((await prisma.auditLog.count({ where: { tenantId: w.id, entity: "trial", actorId: full.id } })) === 1, "Audit mit handelndem Plattform-Admin");
+
+  console.log("\n— Vorlagen und Worker —");
+  const sample: { [K in (typeof TRIAL_TEMPLATE_KEYS)[number]]: TemplateVars[K] } = {
+    trial_confirm: { name: "Paula", companyName: "Muster", trialEnd: "30.09.2026", actionUrl: "https://x.example/testen/bestaetigen?token=abc", expires: "16.09.2026, 10:00" },
+    trial_existing_account: { name: "Paula", loginUrl: "https://x.example/login", resetUrl: "https://x.example/forgot-password" },
+    trial_reminder: { name: "Paula", tenantName: "Muster", daysLeft: 3, endDate: "30.09.2026", actionUrl: "https://x.example/dashboard", contact: "vertrieb@craftvia.example" },
+    trial_expired: { name: "Paula", tenantName: "Muster", endDate: "30.09.2026", deletionDate: "30.10.2026", exportUrl: "https://x.example/settings/export" },
+    trial_deletion_notice: { name: "Paula", tenantName: "Muster", deletionDate: "30.10.2026", exportUrl: "https://x.example/settings/export" },
+  };
+  for (const key of TRIAL_TEMPLATE_KEYS) {
+    for (const locale of ["de", "en"] as const) {
+      const r = renderTemplate(key, locale, sample[key] as never);
+      ok(r.subject.length > 5 && !/undefined|\{/.test(r.subject + r.text) && r.html.includes("<"), `Vorlage ${key} (${locale}) rendert`);
+    }
+  }
+  ok(renderTemplate("trial_reminder", "de", { ...sample.trial_reminder, daysLeft: 1 }).subject.includes("morgen") && renderTemplate("trial_reminder", "de", { ...sample.trial_reminder, daysLeft: 0 }).subject.includes("heute"), "Erinnerung: „morgen“/„heute“");
+  ok(typeof PROCESSORS["trial-lifecycle"] === "function" && typeof PROCESSORS["tenant-export"] === "function", "Processor trial-lifecycle und tenant-export registriert");
+  ok(readFileSync("src/server/jobs/queues.ts", "utf8").includes('"trial-lifecycle-daily"'), "täglicher Job-Scheduler angelegt");
+  const ctxP = ctxFor(P.tenantId, P.adminUserId, "tenant-admin");
+  ok((await ctxP.db.tenantSettings.findFirst())?.orgName === "ZZ L15 Lifecycle P", "Mandanten-Einstellungen provisioniert");
+
+  await cleanupL15();
+  await prisma.$disconnect();
+  console.log(failures ? `\n${failures} Prüfung(en) fehlgeschlagen` : "\nAlle Prüfungen bestanden");
+  process.exit(failures ? 1 : 0);
+}
+
+main().catch(async (err) => {
+  console.error(err);
+  await cleanupL15().catch(() => undefined);
+  process.exit(1);
+});
diff --git a/scripts/test-testphase-readonly.ts b/scripts/test-testphase-readonly.ts
new file mode 100644
index 0000000..1de964d
--- /dev/null
+++ b/scripts/test-testphase-readonly.ts
@@ -0,0 +1,184 @@
+// Lane L15 „Testphase & Onboarding" — Nur-Lesen nach Ablauf + Export:
+//  zentrale Schreibsperre (moduleGuard, /api/v1-Mutationen inkl. Sync und Uploads, Backoffice-Upload,
+//  Einstellungen/Nutzerverwaltung, Worker-Jobs im Namen von Nutzern) bei gleichzeitig erlaubtem Lesen,
+//  Downloads und Export; Verlängern hebt die Sperre auf; Onboarding-Checkliste; Mandanten-Export
+//  (ZIP mit CSV/JSON + Dateien) inkl. Mandantentrennung und Rollen.
+//
+// Lauf: npx tsx scripts/test-testphase-readonly.ts (lokale Postgres-DB + Garage aus .env)
+
+import "dotenv/config";
+import { readdirSync, readFileSync, statSync } from "node:fs";
+import { join } from "node:path";
+import { prisma } from "../src/server/db";
+import { json, withApi } from "../src/server/api/respond";
+import { assertApiWriteAllowed } from "../src/server/api/context";
+import { applyOperations } from "../src/server/services/sync/apply";
+import { storeFile } from "../src/server/services/documents/store";
+import { addDaysToKey, todayKey } from "../src/lib/trial/dates";
+import { changeTrialEndDate, endTrialNow } from "../src/server/services/trial/admin";
+import { buildTenantExport, listTenantExports, openTenantExport, requestTenantExport, toCsv } from "../src/server/services/trial/export";
+import { isJobBlockedByTrial } from "../src/server/services/trial/jobs";
+import { getOnboardingChecklist, setOnboardingHidden, setOnboardingItem } from "../src/server/services/trial/onboarding";
+import { assertTenantWritable, getTrialState } from "../src/server/services/trial/state";
+import { addMember, cleanupL15, ctxFor, expectCode, failures, ok, platformAdmin, readZip, trialTenant } from "./lib/testphase-fixture";
+
+const post = (body: unknown = {}) => new Request("http://localhost/api/v1/zz", { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify(body) });
+const get = () => new Request("http://localhost/api/v1/zz", { method: "GET" });
+
+function walk(dir: string): string[] {
+  return readdirSync(dir).flatMap((n) => (statSync(join(dir, n)).isDirectory() ? walk(join(dir, n)) : [join(dir, n)]));
+}
+
+async function main() {
+  await cleanupL15();
+  const actor = { platformAdminId: (await platformAdmin("full")).id };
+  const today = todayKey();
+
+  const A = await trialTenant("Readonly A", addDaysToKey(today, 10), { sampleData: true });
+  const B = await trialTenant("Readonly B", addDaysToKey(today, 10));
+  const adminA = ctxFor(A.tenantId, A.adminUserId, "tenant-admin");
+  const adminB = ctxFor(B.tenantId, B.adminUserId, "tenant-admin");
+  const techA = await addMember(A.tenantId, "tech-readonly-a", "technician");
+  const ctxTechA = ctxFor(A.tenantId, techA.id, "technician");
+  await adminB.db.customer.create({ data: { tenantId: B.tenantId, companyName: "ZZ Kunde nur B", city: "Kiel" } });
+
+  console.log("\n— laufende Testphase: schreibbar, Onboarding —");
+  await assertTenantWritable(A.tenantId);
+  ok(true, "laufende Testphase ist schreibbar");
+  const checklist = await getOnboardingChecklist(adminA);
+  ok(checklist?.items.length === 5 && checklist.items.find((i) => i.key === "team")?.done === false, "Erste Schritte: 5 Punkte, Beispielteam zählt nicht als eigenes Team");
+  ok(checklist?.items.find((i) => i.key === "technician")?.done === true, "Erste Schritte: eingeladener Monteur automatisch erkannt");
+  ok(checklist?.items.find((i) => i.key === "first_order")?.done === false, "Erste Schritte: Beispielaufträge zählen nicht als erster Auftrag");
+  await setOnboardingItem(adminA, "mobile", true);
+  ok((await getOnboardingChecklist(adminA))?.items.find((i) => i.key === "mobile")?.done === true, "Punkt manuell abgehakt");
+  await expectCode(() => setOnboardingItem(ctxTechA, "mobile", false), "forbidden", "Monteur kann die Checkliste nicht ändern");
+  await expectCode(() => setOnboardingItem(adminA, "hacken", true), "invalid", "unbekannter Punkt → invalid");
+  ok((await getOnboardingChecklist(ctxTechA)) === null, "Monteur sieht die Checkliste nicht");
+  const fullTenant = await prisma.tenant.findUniqueOrThrow({ where: { slug: "demo" }, select: { id: true } }).catch(() => null);
+  if (fullTenant) {
+    const demoAdmin = await prisma.user.findFirst({ where: { tenantId: fullTenant.id, email: "admin@demo.example" } });
+    if (demoAdmin) ok((await getOnboardingChecklist(ctxFor(fullTenant.id, demoAdmin.id, "tenant-admin"))) === null, "Vollversions-Mandant ohne Testphase → keine Checkliste");
+  }
+
+  console.log("\n— Ablauf: zentrale Schreibsperre —");
+  await endTrialNow(actor, A.tenantId);
+  const stateA = await getTrialState(A.tenantId);
+  ok(stateA.readOnly && stateA.expired && !!stateA.deletionDueAt, "Testphase beendet → nur lesen, Löschtermin gesetzt");
+  try {
+    await assertTenantWritable(A.tenantId);
+    ok(false, "Schreibsperre greift nicht");
+  } catch (err) {
+    const e = err as { code?: string; message?: string; details?: { readOnly?: boolean; message?: string } };
+    ok(e.code === "blocked" && e.message === "trial_expired" && e.details?.readOnly === true && !!e.details.message, "ServiceError blocked/trial_expired mit Klartext");
+  }
+  await assertTenantWritable(B.tenantId);
+  ok(true, "Mandant B bleibt schreibbar");
+
+  // /api/v1: the same wrapper + check the real routes use (withApi → requireApiContext → assertApiWriteAllowed)
+  const handler = (tenantId: string) => withApi(async () => {
+    await assertApiWriteAllowed(tenantId);
+    return json({ ok: true });
+  });
+  const blocked = await handler(A.tenantId)(post());
+  const blockedBody = (await blocked.json()) as { error?: { code: string; message: string; details?: { readOnly?: boolean } } };
+  ok(blocked.status === 422 && blockedBody.error?.code === "blocked" && blockedBody.error.message === "trial_expired" && blockedBody.error.details?.readOnly === true, "API-Mutation (POST) → 422 blocked trial_expired");
+  ok((await handler(A.tenantId)(new Request("http://localhost/x", { method: "DELETE" }))).status === 422, "API-Mutation (DELETE) → 422");
+  ok((await handler(A.tenantId)(get())).status === 200, "API-Lesezugriff (GET) bleibt erlaubt");
+  ok((await handler(B.tenantId)(post())).status === 200, "API-Mutation von Mandant B unberührt");
+  await assertApiWriteAllowed(A.tenantId);
+  ok(true, "außerhalb von withApi (Downloads /files, Export) keine Sperre");
+
+  const syncBefore = await prisma.syncOperation.count({ where: { tenantId: A.tenantId } });
+  const order = await adminA.db.workOrder.findFirstOrThrow({ where: { status: "assigned" } });
+  const sync = withApi(async (req: Request) => {
+    await assertApiWriteAllowed(A.tenantId);
+    return json(await applyOperations(ctxTechA, (await req.json()) as never));
+  });
+  const syncRes = await sync(post({ deviceId: "zz", operations: [{ clientOpId: "7c1d6a0e-3b1f-4c55-9d2a-00000000f015", opType: "note.create", payload: { workOrderId: order.id, kind: "work_done", text: "zz" }, clientCreatedAt: new Date().toISOString() }] }));
+  ok(syncRes.status === 422 && (await prisma.syncOperation.count({ where: { tenantId: A.tenantId } })) === syncBefore, "Sync-Batch → 422, keine Operation angewendet (Outbox wiederholt später)");
+
+  // static coverage of every write entry point
+  const guard = readFileSync("src/server/action-guard.ts", "utf8");
+  ok(/assertModuleEnabled\(session, moduleKey\);[\s\S]*await assertTenantWritable\(session\.user\.tenantId\);[\s\S]*return \{ session, db/.test(guard), "moduleGuard: Schreibsperre für alle Modul-Actions (inkl. Lotse, Uploads per Action)");
+  const context = readFileSync("src/server/api/context.ts", "utf8");
+  ok(/enforceApiRateLimit\(session\.user\.id, moduleKey\);\s*await assertApiWriteAllowed\(tenantId\);/.test(context), "requireApiContext: Schreibsperre für jede /api/v1-Mutation");
+  const routes = walk("src/app/api/v1").filter((f) => f.endsWith("route.ts"));
+  const mutating = routes.filter((f) => /export const (POST|PUT|PATCH|DELETE)\b|export async function (POST|PUT|PATCH|DELETE)\b/.test(readFileSync(f, "utf8")));
+  // every mutating route: withApi (central lock in requireApiContext) OR an explicit assertTenantWritable
+  const unwrapped = mutating.filter((f) => {
+    const src = readFileSync(f, "utf8");
+    return !/export const (POST|PUT|PATCH|DELETE) = withApi\(/.test(src) && !/await assertTenantWritable\(ctx\.tenantId\)/.test(src);
+  });
+  ok(mutating.length > 10 && unwrapped.length === 0, `alle ${mutating.length} mutierenden /api/v1-Routen gesperrt (withApi bzw. explizit; Sync und Uploads eingeschlossen)${unwrapped.length ? ` — ohne: ${unwrapped.join(", ")}` : ""}`);
+  ok(readFileSync("src/app/(app)/documents/upload/route.ts", "utf8").includes("await assertTenantWritable(ctx.tenantId)"), "Backoffice-Upload-Route gesperrt");
+  ok(readFileSync("src/server/actions/tenant-settings.ts", "utf8").includes("await assertTenantWritable(tenantId)"), "Einstellungen gesperrt");
+  ok(readFileSync("src/server/actions/tenant-users.ts", "utf8").includes("await assertTenantWritable(session.user.tenantId)"), "Nutzer-/Rollenverwaltung gesperrt");
+  ok(readFileSync("src/server/actions/lotse-settings.ts", "utf8").includes("await assertTenantWritable(ctx.tenantId)"), "Lotse-Einstellungen gesperrt");
+  ok(readFileSync("scripts/craftvia-worker.ts", "utf8").includes("isJobBlockedByTrial(name, job.data)"), "Worker prüft die Sperre vor jedem Job");
+
+  ok(await isJobBlockedByTrial("import-extraction", { tenantId: A.tenantId }), "Job Import-Extraktion für abgelaufenen Mandanten übersprungen");
+  ok(await isJobBlockedByTrial("transcription", { tenantId: A.tenantId }), "Job Transkription (Lotse) übersprungen");
+  ok(!(await isJobBlockedByTrial("report-pdf", { tenantId: A.tenantId })), "PDF-Erzeugung bereits gespeicherter Berichte läuft weiter");
+  ok(!(await isJobBlockedByTrial("tenant-export", { tenantId: A.tenantId })), "Export-Job läuft auch im Nur-Lesen-Zustand");
+  ok(!(await isJobBlockedByTrial("import-extraction", { tenantId: B.tenantId })), "Jobs von Mandant B unberührt");
+  ok(!(await isJobBlockedByTrial("trial-lifecycle", { tenantId: "*" })), "plattformweite Jobs nicht betroffen");
+
+  await expectCode(() => setOnboardingItem(adminA, "team", true), "blocked", "Checkliste im Nur-Lesen-Zustand gesperrt");
+  await expectCode(() => setOnboardingHidden(adminA, true), "blocked", "Ausblenden im Nur-Lesen-Zustand gesperrt");
+  ok((await adminA.db.customer.count()) === 3 && (await adminA.db.workOrder.count()) === 4, "Lesen bleibt möglich");
+
+  console.log("\n— Export (auch im Nur-Lesen-Zustand) —");
+  // one stored file for the export
+  const pdf = Buffer.from("%PDF-1.4\n1 0 obj<<>>endobj\ntrailer<<>>\n%%EOF\n");
+  const doc = await storeFile(ctxFor(A.tenantId, A.adminUserId, "tenant-admin"), { bytes: pdf, fileName: "zz-auftrag.pdf", declaredMime: "application/pdf", category: "other", visibility: "team", links: { workOrderId: order.id } }).catch((err) => {
+    console.log("  (Hinweis: Dokument konnte nicht gespeichert werden:", (err as Error).message, ")");
+    return null;
+  });
+  await prisma.customer.updateMany({ where: { tenantId: A.tenantId, companyName: { startsWith: "Hausverwaltung" } }, data: { notes: "=HYPERLINK(\"http://evil\")" } });
+  await expectCode(() => requestTenantExport(ctxTechA, { dispatch: async () => undefined }), "forbidden", "Monteur darf keinen Export anfordern");
+  const exp = await requestTenantExport(adminA, { dispatch: (tid, id) => buildTenantExport(tid, id) });
+  const done = await prisma.tenantExport.findUniqueOrThrow({ where: { id: exp.id } });
+  ok(done.status === "done" && !!done.storageKey?.startsWith(`${A.tenantId}/`) && (done.bytes ?? 0) > 0, `Export im Nur-Lesen-Zustand erstellt (${done.status}${done.error ? `: ${done.error}` : ""})`);
+  await expectCode(() => requestTenantExport(adminA, { dispatch: async () => undefined }).then(() => requestTenantExport(adminA, { dispatch: async () => undefined })), "conflict", "paralleler Export → conflict");
+  const { bytes, fileName } = await openTenantExport(adminA, exp.id);
+  ok(bytes.subarray(0, 2).toString() === "PK" && fileName.endsWith(".zip"), "Download liefert ZIP");
+  const zip = readZip(bytes);
+  const kunden = zip.get("csv/kunden.csv")?.toString("utf8") ?? "";
+  ok(zip.has("LIESMICH.txt") && zip.has("json/auftraege.json") && zip.has("csv/zeiten.csv") && zip.has("csv/material.csv") && zip.has("csv/berichte.csv"), "ZIP enthält Stammdaten, Aufträge, Zeiten, Material, Berichte (CSV/JSON)");
+  ok(kunden.startsWith("") && kunden.includes("Hausverwaltung Musterhof GmbH"), "CSV mit BOM und Daten von Mandant A");
+  ok(!kunden.includes("ZZ Kunde nur B"), "Export enthält keine Daten von Mandant B");
+  ok(kunden.includes("'=HYPERLINK"), "CSV-Formel-Injektion entschärft");
+  ok((JSON.parse(zip.get("json/auftraege.json")?.toString("utf8") ?? "[]") as unknown[]).length === 4, "JSON enthält alle Aufträge");
+  if (doc) ok([...zip.keys()].some((k) => k.startsWith(`dateien/${doc.id}-`)) && zip.get([...zip.keys()].find((k) => k.startsWith(`dateien/${doc.id}-`))!)?.equals(pdf) === true, "gespeicherte Datei im ZIP (byte-identisch)");
+  const nutzer = zip.get("csv/nutzer.csv")?.toString("utf8") ?? "";
+  ok(!nutzer.includes("password") && !nutzer.includes("$argon2"), "keine Passwort-Hashes im Export");
+  ok((await listTenantExports(adminA)).some((e) => e.id === exp.id && !e.expired), "Exportliste zeigt den fertigen Export");
+  await expectCode(() => openTenantExport(adminB, exp.id), "not_found", "Mandant B kann den Export von A nicht laden");
+  await expectCode(() => openTenantExport(ctxTechA, exp.id), "forbidden", "Monteur kann den Export nicht laden");
+  await expectCode(() => openTenantExport(adminA, exp.id, { now: new Date(Date.now() + 8 * 86_400_000) }), "invalid", "Download nach 7 Tagen abgelaufen");
+  ok((await prisma.auditLog.count({ where: { tenantId: A.tenantId, entity: "tenant_export_download" } })) >= 1, "Audit: Export-Download");
+  ok(toCsv([{ a: 'x;"y"', b: new Date("2026-01-01T00:00:00Z"), c: null }]) === 'a;b;c\r\n"x;""y""";2026-01-01T00:00:00.000Z;\r\n', "CSV-Quoting, Datum, leere Werte");
+
+  console.log("\n— Verlängern hebt die Sperre auf —");
+  const before = await prisma.tenant.findUniqueOrThrow({ where: { id: B.tenantId } });
+  await changeTrialEndDate(actor, A.tenantId, addDaysToKey(today, 5));
+  await assertTenantWritable(A.tenantId);
+  const stateAfter = await getTrialState(A.tenantId);
+  ok(!stateAfter.readOnly && stateAfter.daysLeft === 5, "nach Verlängerung wieder schreibbar (noch 5 Tage)");
+  ok((await handler(A.tenantId)(post())).status === 200, "API-Mutation nach Verlängerung erlaubt");
+  await setOnboardingItem(adminA, "team", true);
+  ok(true, "Checkliste nach Verlängerung wieder änderbar");
+  const after = await prisma.tenant.findUniqueOrThrow({ where: { id: B.tenantId } });
+  ok(before.trialEndsAt?.getTime() === after.trialEndsAt?.getTime() && after.readOnlySince === null, "Mandant B unverändert");
+
+  await cleanupL15();
+  await prisma.$disconnect();
+  console.log(failures ? `\n${failures} Prüfung(en) fehlgeschlagen` : "\nAlle Prüfungen bestanden");
+  process.exit(failures ? 1 : 0);
+}
+
+main().catch(async (err) => {
+  console.error(err);
+  await cleanupL15().catch(() => undefined);
+  process.exit(1);
+});
diff --git a/scripts/test-testphase-signup.ts b/scripts/test-testphase-signup.ts
new file mode 100644
index 0000000..28e13a1
--- /dev/null
+++ b/scripts/test-testphase-signup.ts
@@ -0,0 +1,211 @@
+// Lane L15 „Testphase & Onboarding" — öffentliche Selbstanmeldung:
+//  Wizard-Validierung (Pflichtfelder, Passwort-Policy, Enddatum-Grenzen, TRIAL_MAX_DAYS, Europe/Berlin),
+//  Double-Opt-in (Token nur als Hash, 24 h, Einmalverwendung, ältere Links entwertet),
+//  Honeypot, Enumeration-Schutz (gleiche Antwort, Hinweis-Mail), Rate-Limit je IP und je E-Mail,
+//  Provisionierung mit/ohne Beispieldaten + Modulauswahl, Slug-Kollisionen, Mandantentrennung.
+//
+// Lauf: npx tsx scripts/test-testphase-signup.ts (lokale Postgres-DB aus .env)
+
+import "dotenv/config";
+import { readFileSync } from "node:fs";
+import { prisma, dbForTenant } from "../src/server/db";
+import { verifyPassword } from "../src/server/password";
+import { resetRateLimits } from "../src/server/rate-limit";
+import { addDaysToKey, trialBounds, trialEndDateKey, trialEndInstant } from "../src/lib/trial/dates";
+import { normalizeTrialValues, validateTrialSignup, validateTrialStep, type TrialSignupValues } from "../src/lib/trial/signup";
+import { MODULE_KEYS } from "../src/lib/modules";
+import { trialMaxDays } from "../src/server/services/trial/config";
+import { enforceTrialRateLimit } from "../src/server/services/trial/abuse";
+import { checkTrialStep, confirmTrialSignup, currentTrialBounds, hashSignupToken, peekTrialSignup, submitTrialSignup } from "../src/server/services/trial/signup";
+import { SAMPLE_TEAM_NAME } from "../src/server/services/trial/sample-data";
+import { captureMail, cleanupL15, DOMAIN, failures, ok } from "./lib/testphase-fixture";
+
+const PASSWORD = "Testphase2026Sicher";
+
+function values(over: Partial<TrialSignupValues> = {}): TrialSignupValues {
+  return {
+    companyName: "ZZ L15 Signup Sanitär",
+    sector: "Sanitär, Heizung, Klima",
+    companySize: "6-20",
+    adminName: "Paula Probe",
+    email: `paula${DOMAIN}`,
+    password: PASSWORD,
+    trialEndDate: currentTrialBounds().defaultEnd,
+    sampleData: true,
+    modules: [...MODULE_KEYS],
+    acceptTerms: true,
+    acceptPrivacy: true,
+    website: "",
+    ...over,
+  };
+}
+
+const tokenOf = (url: string) => new URL(url).searchParams.get("token") ?? "";
+
+async function main() {
+  await cleanupL15();
+  resetRateLimits();
+
+  console.log("\n— Wizard-Validierung —");
+  const now = new Date("2026-03-10T10:00:00Z");
+  const b = trialBounds(now, 30);
+  ok(b.today === "2026-03-10" && b.min === "2026-03-11" && b.max === "2026-04-09" && b.defaultEnd === "2026-03-24", "Grenzen: morgen … heute + 30, Vorbelegung heute + 14");
+  ok(trialBounds(now, 10).defaultEnd === "2026-03-20", "Vorbelegung höchstens TRIAL_MAX_DAYS");
+  const v = values();
+  ok(validateTrialStep("period", { ...v, trialEndDate: "2026-03-10" }, b).trialEndDate === "date_too_early", "Enddatum heute → zu früh");
+  ok(!validateTrialStep("period", { ...v, trialEndDate: "2026-03-11" }, b).trialEndDate, "Enddatum morgen → erlaubt");
+  ok(!validateTrialStep("period", { ...v, trialEndDate: "2026-04-09" }, b).trialEndDate, "Enddatum heute + 30 → erlaubt");
+  ok(validateTrialStep("period", { ...v, trialEndDate: "2026-04-10" }, b).trialEndDate === "date_too_late", "Enddatum heute + 31 → zu spät");
+  ok(validateTrialStep("period", { ...v, trialEndDate: "2026-02-30" }, b).trialEndDate === "date_invalid", "ungültiges Kalenderdatum");
+  ok(validateTrialStep("company", { ...v, companyName: " " }, b).companyName === "company_required", "Firmenname Pflicht");
+  ok(validateTrialStep("company", { ...v, companySize: "999" }, b).companySize === "invalid_choice", "Betriebsgröße nur aus der Liste");
+  const acc = validateTrialStep("account", { ...v, adminName: "", email: "kein-mail", password: "kurz" }, b);
+  ok(acc.adminName === "name_required" && acc.email === "email_invalid" && acc.password === "password_policy", "Admin-Konto: Name, E-Mail und Passwort-Policy");
+  ok(validateTrialStep("setup", { ...v, modules: [] }, b).modules === "modules_required", "mindestens ein Modul");
+  const sum = validateTrialStep("summary", { ...v, acceptTerms: false, acceptPrivacy: false }, b);
+  ok(sum.acceptTerms === "terms_required" && sum.acceptPrivacy === "privacy_required", "Pflicht-Checkboxen Nutzungsbedingungen/Datenschutz");
+  ok(Object.keys(validateTrialSignup({ ...v, trialEndDate: "2026-03-24" }, b)).length === 0, "vollständige gültige Anmeldung ohne Fehler");
+  ok(normalizeTrialValues({ ...v, email: " Paula@ZZ-L15.test ", modules: ["customers", "hacker"] })?.email === "paula@zz-l15.test", "E-Mail normalisiert");
+  ok(JSON.stringify(normalizeTrialValues({ ...v, modules: ["customers", "hacker"] })?.modules) === '["customers"]', "unbekannte Module verworfen");
+  ok(normalizeTrialValues({ modules: "kein-array" }) === null, "fehlerhafte Eingabe → null");
+  ok(checkTrialStep("hacken", v)._form === "invalid_request", "serverseitige Schrittprüfung: unbekannter Schritt");
+  ok(checkTrialStep("account", { ...v, password: "x" }).password === "password_policy", "serverseitige Schrittprüfung: Passwort-Policy");
+
+  const prevMax = process.env.TRIAL_MAX_DAYS;
+  process.env.TRIAL_MAX_DAYS = "10";
+  ok(trialMaxDays() === 10, "TRIAL_MAX_DAYS aus der Umgebung");
+  process.env.TRIAL_MAX_DAYS = "abc";
+  ok(trialMaxDays() === 30, "ungültiges TRIAL_MAX_DAYS → Default 30");
+  if (prevMax === undefined) delete process.env.TRIAL_MAX_DAYS;
+  else process.env.TRIAL_MAX_DAYS = prevMax;
+
+  ok(trialEndInstant("2026-03-24").toISOString() === "2026-03-24T23:00:00.000Z", "Ende des gewählten Tages in Europe/Berlin (Winterzeit)");
+  ok(trialEndInstant("2026-07-01").toISOString() === "2026-07-01T22:00:00.000Z", "Ende des gewählten Tages in Europe/Berlin (Sommerzeit)");
+  ok(trialEndInstant("2026-03-29").toISOString() === "2026-03-29T22:00:00.000Z", "Ende am Tag der Zeitumstellung");
+  ok(trialEndDateKey(trialEndInstant("2026-10-25")) === "2026-10-25", "letzter Testtag aus dem gespeicherten Ende zurückgerechnet");
+
+  console.log("\n— Absenden: ungültig / Honeypot —");
+  const mail = captureMail();
+  const invalid = await submitTrialSignup({ ...values(), acceptTerms: false }, { ip: "198.51.100.1", sendMail: mail.fn });
+  ok(invalid.status === "invalid" && (invalid as { errors: Record<string, string> }).errors.acceptTerms === "terms_required", "ungültig → Fehler je Feld");
+  ok((await prisma.trialSignup.count({ where: { email: { endsWith: DOMAIN } } })) === 0 && mail.sent.length === 0, "ungültig → keine Anmeldung, keine Mail");
+  const honey = await submitTrialSignup({ ...values(), website: "http://spam.example" }, { ip: "198.51.100.1", sendMail: mail.fn });
+  ok(honey.status === "sent", "Honeypot gefüllt → neutrale Erfolgsantwort");
+  ok((await prisma.trialSignup.count({ where: { email: { endsWith: DOMAIN } } })) === 0 && mail.sent.length === 0, "Honeypot → nichts gespeichert, keine Mail");
+
+  console.log("\n— Double-Opt-in —");
+  const first = await submitTrialSignup(values({ sampleData: true, modules: MODULE_KEYS.filter((m) => m !== "lotse") }), { ip: "198.51.100.7", sendMail: mail.fn });
+  ok(first.status === "sent" && mail.sent.length === 1 && mail.sent[0].template === "trial_confirm", "gültig → Bestätigungsmail");
+  const token1 = tokenOf((mail.sent[0].vars as { actionUrl: string }).actionUrl);
+  const row1 = await prisma.trialSignup.findFirstOrThrow({ where: { email: `paula${DOMAIN}` }, orderBy: { createdAt: "desc" } });
+  ok(row1.tokenHash === hashSignupToken(token1) && row1.tokenHash !== token1 && token1.length >= 40, "Token nur als SHA-256-Hash gespeichert");
+  ok(row1.passwordHash.startsWith("$argon2id$") && !row1.passwordHash.includes(PASSWORD), "Passwort als Argon2id-Hash (mit Pepper)");
+  ok(!!row1.ipHash && row1.ipHash !== "198.51.100.7", "IP nur als HMAC");
+  const ttl = row1.expiresAt.getTime() - row1.createdAt.getTime();
+  ok(Math.abs(ttl - 24 * 3600_000) < 60_000, "Link 24 Stunden gültig");
+  ok(row1.status === "pending" && (await prisma.tenant.count({ where: { slug: { startsWith: "zz-l15-signup" } } })) === 0, "vor der Bestätigung wird kein Mandant angelegt");
+  const rawDump = JSON.stringify(await prisma.trialSignup.findMany({ where: { email: { endsWith: DOMAIN } } }));
+  ok(!rawDump.includes(token1) && !rawDump.includes(PASSWORD), "weder Klartext-Token noch -Passwort in der Tabelle");
+
+  const second = await submitTrialSignup(values({ sampleData: true, modules: MODULE_KEYS.filter((m) => m !== "lotse") }), { ip: "198.51.100.7", sendMail: mail.fn });
+  const token2 = tokenOf((mail.sent[1].vars as { actionUrl: string }).actionUrl);
+  ok(second.status === "sent" && token2 !== token1, "erneute Anmeldung → neuer Link");
+  ok((await prisma.trialSignup.findUniqueOrThrow({ where: { id: row1.id } })).status === "superseded" && (await peekTrialSignup(token1)) === null, "älterer Link entwertet");
+  ok((await confirmTrialSignup(token1)).status === "invalid", "entwerteter Link lässt sich nicht einlösen");
+  const peek = await peekTrialSignup(token2);
+  ok(peek?.companyName === "ZZ L15 Signup Sanitär", "Bestätigungsseite zeigt die Anmeldung (ohne Einlösen)");
+  ok((await confirmTrialSignup("falsches-token")).status === "invalid", "falsches Token → ungültig");
+
+  // expiry on a separate signup
+  const mailExp = captureMail();
+  await submitTrialSignup(values({ email: `ablauf${DOMAIN}`, companyName: "ZZ L15 Ablauf" }), { ip: "198.51.100.8", sendMail: mailExp.fn });
+  const tokenExp = tokenOf((mailExp.sent[0].vars as { actionUrl: string }).actionUrl);
+  const expRow = await prisma.trialSignup.findFirstOrThrow({ where: { email: `ablauf${DOMAIN}` } });
+  ok((await confirmTrialSignup(tokenExp, { now: new Date(expRow.expiresAt.getTime() + 1000) })).status === "expired", "nach 24 h → abgelaufen");
+  const expAfter = await prisma.trialSignup.findUniqueOrThrow({ where: { id: expRow.id } });
+  ok(expAfter.status === "expired" && expAfter.passwordHash === "", "abgelaufene Anmeldung: Status expired, Passwort-Hash entfernt");
+  ok((await confirmTrialSignup(tokenExp)).status === "invalid", "abgelaufener Link bleibt ungültig");
+
+  console.log("\n— Bestätigung → Provisionierung (mit Beispieldaten, Modulauswahl) —");
+  const confirmed = await confirmTrialSignup(token2);
+  ok(confirmed.status === "ok", "Bestätigung → Mandant provisioniert");
+  if (confirmed.status !== "ok") throw new Error("confirm failed");
+  const tenantA = await prisma.tenant.findUniqueOrThrow({ where: { id: confirmed.tenantId } });
+  const endKey = values().trialEndDate;
+  ok(tenantA.plan === "TRIAL" && tenantA.trialSource === "self_signup" && !!tenantA.trialStartedAt, "Plan TRIAL, Herkunft Selbstanmeldung");
+  ok(tenantA.trialEndsAt?.getTime() === trialEndInstant(endKey).getTime(), "trialEndsAt = Ende des gewählten Tages (Europe/Berlin)");
+  ok(tenantA.deletionDueAt?.getTime() === trialEndInstant(endKey).getTime() + 30 * 86_400_000, "Löschung 30 Tage nach Ende vorgemerkt");
+  ok(tenantA.slug === "zz-l15-signup-sanitar", "Slug aus dem Firmennamen");
+  const admin = await prisma.user.findFirstOrThrow({ where: { tenantId: tenantA.id }, include: { userRoles: { include: { role: true } }, identity: true } });
+  ok(admin.userRoles.some((r) => r.role.key === "tenant-admin") && admin.email === `paula${DOMAIN}`, "Admin mit Rolle tenant-admin");
+  ok(await verifyPassword(admin.identity.passwordHash, PASSWORD), "Login-Passwort = Passwort aus dem Wizard");
+  ok(!admin.identity.mustChangePassword, "kein Passwortzwang für die Selbstanmeldung");
+  const signupAfter = await prisma.trialSignup.findFirstOrThrow({ where: { tokenHash: hashSignupToken(token2) } });
+  ok(signupAfter.status === "confirmed" && signupAfter.passwordHash === "" && signupAfter.provisionedTenantId === tenantA.id, "Anmeldung bestätigt, Passwort-Hash aus der Anmeldung entfernt");
+  const modules = await prisma.tenantModule.findMany({ where: { tenantId: tenantA.id } });
+  ok(modules.length === MODULE_KEYS.length && modules.find((m) => m.moduleKey === "lotse")?.enabled === false && modules.filter((m) => m.enabled).length === MODULE_KEYS.length - 1, "abgewähltes Modul deaktiviert, übrige aktiv");
+  const dbA = dbForTenant(tenantA.id);
+  ok((await dbA.customer.count()) === 3 && (await dbA.site.count()) === 3 && (await dbA.workOrder.count()) === 4, "Beispieldaten: 3 Kunden, 3 Objekte, 4 Aufträge");
+  ok((await dbA.team.count({ where: { name: SAMPLE_TEAM_NAME } })) === 1 && (await dbA.workOrder.count({ where: { status: "assigned" } })) === 1, "Beispieldaten: Team + zugewiesener Auftrag (über die Fachservices)");
+  ok((await prisma.auditLog.count({ where: { tenantId: tenantA.id, entity: "trial", action: "create" } })) === 1, "Audit: Testphase angelegt");
+  ok((await confirmTrialSignup(token2)).status === "invalid", "Einmalverwendung: zweiter Klick → ungültig");
+
+  console.log("\n— Enumeration-Schutz —");
+  const mailEnum = captureMail();
+  const known = await submitTrialSignup(values({ companyName: "ZZ L15 Doppelt" }), { ip: "198.51.100.9", sendMail: mailEnum.fn });
+  const unknown = await submitTrialSignup(values({ companyName: "ZZ L15 Neu", email: `neu${DOMAIN}` }), { ip: "198.51.100.9", sendMail: mailEnum.fn });
+  ok(JSON.stringify(known) === JSON.stringify(unknown), "bestehende und neue Adresse → identische Antwort");
+  ok(mailEnum.sent[0].template === "trial_existing_account" && mailEnum.sent[0].to === `paula${DOMAIN}` && mailEnum.sent[1].template === "trial_confirm", "bestehende Adresse → Hinweis-Mail statt Bestätigungslink");
+  ok(!JSON.stringify(mailEnum.sent[0].vars).includes("token="), "Hinweis-Mail enthält keinen Aktivierungslink");
+  ok((await prisma.trialSignup.count({ where: { email: `paula${DOMAIN}`, status: "pending" } })) === 0, "bestehende Adresse → keine offene Anmeldung");
+
+  console.log("\n— Rate-Limit je IP und je E-Mail —");
+  resetRateLimits();
+  const ipA = "203.0.113.10";
+  const results = Array.from({ length: 6 }, () => enforceTrialRateLimit("trialSignup", { ip: ipA, email: `rl${DOMAIN}` }).allowed);
+  ok(results.slice(0, 5).every(Boolean) && results[5] === false, "je IP/E-Mail: 5 Anmeldungen pro Stunde, die 6. wird abgewiesen");
+  ok(enforceTrialRateLimit("trialSignup", { ip: "203.0.113.11", email: `rl${DOMAIN}` }).allowed === false, "gleiche E-Mail von anderer IP → weiter gesperrt");
+  ok(enforceTrialRateLimit("trialSignup", { ip: ipA, email: `anders${DOMAIN}` }).allowed === false, "gleiche IP mit anderer E-Mail → weiter gesperrt");
+  ok(enforceTrialRateLimit("trialSignup", { ip: "203.0.113.12", email: `anders${DOMAIN}` }).allowed, "andere IP + andere E-Mail → erlaubt");
+  const retry = enforceTrialRateLimit("trialSignup", { ip: ipA, email: null });
+  ok(!retry.allowed && retry.retryAfterSeconds > 0, "Retry-After gesetzt");
+  resetRateLimits();
+  const actionsSrc = readFileSync("src/server/actions/trial-signup.ts", "utf8");
+  const exported = [...actionsSrc.matchAll(/export async function (\w+)/g)].map((m) => m[1]);
+  ok(exported.length === 3 && exported.every((name) => new RegExp(`export async function ${name}[\\s\\S]*?enforceTrialRateLimit\\(`).test(actionsSrc)), "jede öffentliche Action prüft das Rate-Limit");
+  ok(readFileSync("scripts/check-module-guards.ts", "utf8").includes('"trial-signup.ts": "PUBLIC"'), "Guard-Check erzwingt Rate-Limit für öffentliche Actions");
+  ok(readFileSync("src/proxy.ts", "utf8").includes('"/testen"'), "/testen ist ohne Login erreichbar (Proxy)");
+
+  console.log("\n— ohne Beispieldaten, Slug-Kollision, Mandantentrennung —");
+  const mailB = captureMail();
+  await submitTrialSignup(values({ email: `bernd${DOMAIN}`, adminName: "Bernd Probe", sampleData: false }), { ip: "198.51.100.20", sendMail: mailB.fn });
+  const confirmedB = await confirmTrialSignup(tokenOf((mailB.sent[0].vars as { actionUrl: string }).actionUrl));
+  ok(confirmedB.status === "ok", "zweite Anmeldung mit gleichem Firmennamen bestätigt");
+  if (confirmedB.status !== "ok") throw new Error("confirm B failed");
+  ok(confirmedB.tenantSlug === "zz-l15-signup-sanitar-2" && confirmedB.tenantId !== tenantA.id, "Slug-Kollision automatisch gelöst (-2), eigener Mandant");
+  const dbB = dbForTenant(confirmedB.tenantId);
+  ok((await dbB.customer.count()) === 0 && (await dbB.workOrder.count()) === 0, "ohne Beispieldaten → leerer Mandant");
+  ok((await dbB.tenantModule.count({ where: { enabled: true } })) === MODULE_KEYS.length, "Standard: alle Module aktiv");
+  const customerA = await dbA.customer.findFirstOrThrow();
+  ok((await dbB.customer.findFirst({ where: { id: customerA.id } })) === null, "Mandant B sieht die Kunden von A nicht");
+  let crossWrite = false;
+  try {
+    await dbB.customer.update({ where: { id: customerA.id }, data: { city: "Hack" } });
+    crossWrite = true;
+  } catch {
+    crossWrite = false;
+  }
+  ok(!crossWrite && (await dbA.customer.findFirstOrThrow({ where: { id: customerA.id } })).city !== "Hack", "Mandant B kann Kunden von A nicht ändern");
+  ok(addDaysToKey("2026-12-31", 1) === "2027-01-01", "Datumsrechnung über den Jahreswechsel");
+
+  await cleanupL15();
+  await prisma.$disconnect();
+  console.log(failures ? `\n${failures} Prüfung(en) fehlgeschlagen` : "\nAlle Prüfungen bestanden");
+  process.exit(failures ? 1 : 0);
+}
+
+main().catch(async (err) => {
+  console.error(err);
+  await cleanupL15().catch(() => undefined);
+  process.exit(1);
+});
diff --git a/src/app/(app)/dashboard/page.tsx b/src/app/(app)/dashboard/page.tsx
index 1918df8..9e812f6 100644
--- a/src/app/(app)/dashboard/page.tsx
+++ b/src/app/(app)/dashboard/page.tsx
@@ -26,6 +26,7 @@ import { WORK_ORDER_PRIORITIES } from "@/lib/work-orders/schemas";
 import { getDashboardTiles } from "@/server/services/work-orders/dashboard";
 import { customerDisplayName, customerFilterOptions, teamOptions, userOptions } from "@/server/services/work-orders/options";
 import { listOrderTypes } from "@/server/services/work-orders/settings";
+import { GettingStarted } from "@/components/trial/getting-started";
 
 type SP = Record<string, string | string[] | undefined>;
 
@@ -65,6 +66,7 @@ export default async function DashboardPage({ searchParams }: { searchParams: Pr
   return (
     <main className="flex-1 p-4 md:p-6">
       <PageHead crumb={t("crumb")} title={t("title")} sub={t("subtitle", { name: session.user.name ?? "", tenant: session.user.tenantSlug ?? "" })} />
+      <GettingStarted ctx={ctx} welcome={sp.welcome === "1"} /> {/* L15 Testphase */}
       {sp.module === "disabled" && (
         <p role="status" className="mb-4 rounded-lg border border-[var(--warn)] bg-card px-4 py-3 text-sm text-[var(--warn)]">
           {t("moduleDisabled")}
diff --git a/src/app/(app)/documents/upload/route.ts b/src/app/(app)/documents/upload/route.ts
index 341eee7..5184b25 100644
--- a/src/app/(app)/documents/upload/route.ts
+++ b/src/app/(app)/documents/upload/route.ts
@@ -3,6 +3,7 @@ import { assertSameOrigin, requireApiContext } from "@/server/api/context";
 import { ApiError, toErrorResponse } from "@/server/api/respond";
 import { ServiceError } from "@/server/services/context";
 import { storeFile } from "@/server/services/documents/store";
+import { assertTenantWritable } from "@/server/services/trial/state";
 
 /**
  * Multipart upload for the backoffice document tabs (customer, site, /documents).
@@ -19,6 +20,7 @@ export async function POST(req: Request) {
   try {
     assertSameOrigin(req);
     const ctx = await requireApiContext("documents");
+    await assertTenantWritable(ctx.tenantId); // L15: expired trial → read-only
 
     let form: FormData;
     try {
diff --git a/src/app/(app)/layout.tsx b/src/app/(app)/layout.tsx
index 13ff9d7..b892683 100644
--- a/src/app/(app)/layout.tsx
+++ b/src/app/(app)/layout.tsx
@@ -14,6 +14,7 @@ import { CraftviaLogo } from "@/components/brand/craftvia-logo";
 import { NotificationBell } from "@/components/notifications/bell";
 import { AccountInactiveNotice } from "@/components/account-inactive-notice";
 import { BackofficeFrame } from "@/components/backoffice-frame";
+import { TrialBanner } from "@/components/trial/trial-banner";
 
 export default async function AppLayout({
   children,
@@ -111,6 +112,8 @@ export default async function AppLayout({
           </form>
         </>
       }>
+      {/* L15 Testphase: Countdown ab 7 Tagen bzw. Nur-Lesen-Hinweis */}
+      <TrialBanner tenantId={session.user.tenantId} variant="backoffice" canExport={(session.user.permissions ?? []).includes("tenant:manage")} />
       {children}
     </BackofficeFrame>
   );
diff --git a/src/app/(app)/settings/export/[id]/route.ts b/src/app/(app)/settings/export/[id]/route.ts
new file mode 100644
index 0000000..58a1bcb
--- /dev/null
+++ b/src/app/(app)/settings/export/[id]/route.ts
@@ -0,0 +1,27 @@
+import { requireApiContext } from "@/server/api/context";
+import { toErrorResponse } from "@/server/api/respond";
+import { openTenantExport } from "@/server/services/trial/export";
+
+/**
+ * GET /settings/export/<id> — download of a finished tenant data export (L15 Testphase).
+ * Session + DB-authoritative `tenant:manage`, tenant-bound row; a read, therefore also allowed for
+ * an expired (read-only) trial tenant.
+ */
+export async function GET(_req: Request, { params }: { params: Promise<{ id: string }> }) {
+  try {
+    const ctx = await requireApiContext(null, "tenant:manage");
+    const { id } = await params;
+    const { bytes, fileName } = await openTenantExport(ctx, id);
+    return new Response(new Uint8Array(bytes), {
+      headers: {
+        "Content-Type": "application/zip",
+        "Content-Disposition": `attachment; filename="${fileName.replace(/[^\w.\-]/g, "_")}"`,
+        "Content-Length": String(bytes.length),
+        "Cache-Control": "no-store",
+        "X-Content-Type-Options": "nosniff",
+      },
+    });
+  } catch (err) {
+    return toErrorResponse(err);
+  }
+}
diff --git a/src/app/(app)/settings/export/page.tsx b/src/app/(app)/settings/export/page.tsx
new file mode 100644
index 0000000..3645eb9
--- /dev/null
+++ b/src/app/(app)/settings/export/page.tsx
@@ -0,0 +1,73 @@
+import Link from "next/link";
+import { redirect } from "next/navigation";
+import { getLocale, getTranslations } from "next-intl/server";
+import { Download, PackageOpen } from "lucide-react";
+import { requireSession } from "@/server/auth";
+import { dbForTenant } from "@/server/db";
+import { hasPermission } from "@/server/rbac";
+import { PageHead, Pill } from "@/components/mockup-ui";
+import { Button } from "@/components/ui/button";
+import { formatInstantDate } from "@/lib/trial/dates";
+import { requestExportAction } from "@/server/actions/trial-tenant";
+import { listTenantExports } from "@/server/services/trial/export";
+
+const TONE = { queued: "warn", running: "warn", done: "ok", failed: "mut", expired: "mut" } as const;
+
+/** L15 Testphase: data export for tenant administrators (also available in the read-only state). */
+export default async function DataExportPage({ searchParams }: { searchParams: Promise<{ requested?: string; error?: string }> }) {
+  const session = await requireSession();
+  if (!hasPermission(session, "tenant:manage")) redirect("/dashboard");
+  const sp = await searchParams;
+  const [t, locale] = await Promise.all([getTranslations("trial.export"), getLocale()]);
+  const ctx = { db: dbForTenant(session.user.tenantId), tenantId: session.user.tenantId, userId: session.user.id, permissions: new Set(session.user.permissions ?? []) };
+  const exports = await listTenantExports(ctx);
+  const errorKey = sp.error === "export_running" ? "export_running" : "failed";
+
+  return (
+    <main className="flex-1 p-4 md:p-6">
+      <PageHead crumb={t("crumb")} title={t("title")} sub={t("sub")} />
+
+      <div className="shadow-card rounded-xl border bg-card p-5">
+        <div className="flex flex-wrap items-start gap-4">
+          <PackageOpen className="size-6 shrink-0 text-[var(--ui-primary)]" aria-hidden />
+          <div className="min-w-0 flex-1">
+            <p className="text-sm">{t("contents")}</p>
+            <p className="mt-1 text-[12.5px] text-muted-foreground">{t("readOnlyHint")}</p>
+          </div>
+          <form action={requestExportAction}>
+            <Button type="submit" className="h-11">{t("request")}</Button>
+          </form>
+        </div>
+        {sp.requested && <p role="status" className="mt-3 rounded-lg bg-[rgba(57,192,127,0.14)] px-3 py-2 text-sm text-[var(--ok)]">{t("requested")}</p>}
+        {sp.error && <p role="alert" className="mt-3 rounded-lg bg-[rgba(255,107,107,0.16)] px-3 py-2 text-sm text-[var(--risk)]">{t(`errors.${errorKey}`)}</p>}
+      </div>
+
+      <div className="shadow-card mt-4 rounded-xl border bg-card p-5">
+        <h2 className="font-heading text-[15px] font-semibold">{t("listTitle")}</h2>
+        {exports.length === 0 ? (
+          <p className="mt-2 text-sm text-muted-foreground">{t("empty")}</p>
+        ) : (
+          <ul className="mt-2 divide-y">
+            {exports.map((e) => {
+              const status = e.expired ? "expired" : (e.status as keyof typeof TONE);
+              return (
+                <li key={e.id} className="flex flex-wrap items-center gap-3 py-2.5 text-sm">
+                  <Pill tone={TONE[status] ?? "mut"}>{t(`status.${status}`)}</Pill>
+                  <span className="text-muted-foreground">{t("created")}: {e.createdAt.toLocaleString(locale === "en" ? "en-GB" : "de-DE", { timeZone: "Europe/Berlin" })}</span>
+                  {e.bytes != null && <span className="text-muted-foreground">{(e.bytes / 1024 / 1024).toFixed(1)} MB</span>}
+                  {e.status === "failed" && e.error && <span className="text-[12.5px] text-[var(--risk)]">{e.error}</span>}
+                  {e.status === "done" && !e.expired && (
+                    <Link href={`/settings/export/${e.id}`} prefetch={false} className="ml-auto inline-flex min-h-11 items-center gap-1.5 rounded-md px-3 font-semibold text-[var(--ui-primary)] hover:bg-muted">
+                      <Download className="size-4" aria-hidden /> {t("download")}
+                      {e.expiresAt && <span className="font-normal text-muted-foreground">({t("expires", { date: formatInstantDate(e.expiresAt, locale) })})</span>}
+                    </Link>
+                  )}
+                </li>
+              );
+            })}
+          </ul>
+        )}
+      </div>
+    </main>
+  );
+}
diff --git a/src/app/(field)/m/layout.tsx b/src/app/(field)/m/layout.tsx
index ca6f601..2800f10 100644
--- a/src/app/(field)/m/layout.tsx
+++ b/src/app/(field)/m/layout.tsx
@@ -12,6 +12,7 @@ import { BottomNav } from "@/components/field/bottom-nav";
 import { OnlineBadge } from "@/components/field/online-badge";
 import { RunningClockBar, type ClockSession } from "@/components/field/running-clock-bar";
 import { OfflineRuntime } from "@/components/offline/offline-runtime";
+import { TrialBanner } from "@/components/trial/trial-banner";
 
 /** L12: own running/paused session + open approvals for the shell (never blocks the page). */
 async function shellTimeState(): Promise<{ clock: ClockSession | null; approvals: number }> {
@@ -53,6 +54,8 @@ export default async function FieldShell({ children }: Readonly<{ children: Reac
           <OnlineBadge />
         </div>
       </header>
+      {/* L15 Testphase: Countdown ab 7 Tagen bzw. Nur-Lesen-Hinweis */}
+      <TrialBanner tenantId={access.session.user.tenantId} variant="mobile" />
       <div className={cn("mx-auto w-full max-w-xl flex-1", time.clock ? "pb-48" : "pb-28")}>{children}</div>
       <RunningClockBar initial={time.clock} />
       <BottomNav approvals={time.approvals} />
diff --git a/src/app/(platform)/admin/[id]/page.tsx b/src/app/(platform)/admin/[id]/page.tsx
index 6129386..f692b64 100644
--- a/src/app/(platform)/admin/[id]/page.tsx
+++ b/src/app/(platform)/admin/[id]/page.tsx
@@ -19,6 +19,7 @@ import { UserTable } from "@/components/user-table";
 import { UserCreateForm, UserEditForm } from "@/components/user-forms";
 import { AuditTrailModal, type AuditRow } from "@/components/audit-trail";
 import { RestoreModalBody, ExportModalBody, DsgvoModalBody, type SnapshotOption, type SubjectOption } from "@/components/backup-admin-panel";
+import { TrialAdminCard } from "@/components/trial/trial-admin-card";
 
 const STATUS_TONE: Record<string, "ok" | "warn" | "mut"> = { ACTIVE: "ok", SUSPENDED: "warn", ARCHIVED: "mut" };
 
@@ -27,7 +28,7 @@ export default async function AdminTenantPage({
   searchParams,
 }: {
   params: Promise<{ id: string }>;
-  searchParams: Promise<{ new?: string; edit?: string; audit?: string; modules?: string; users?: string; restore?: string; export?: string; dsgvo?: string }>;
+  searchParams: Promise<{ new?: string; edit?: string; audit?: string; modules?: string; users?: string; restore?: string; export?: string; dsgvo?: string; trial?: string; invited?: string; trialDone?: string }>;
 }) {
   // Zugriff (Plattform-Session + MFA) wird im (platform)/layout.tsx erzwungen.
   const { id } = await params;
@@ -216,6 +217,15 @@ export default async function AdminTenantPage({
         </div>
 
         <div className="space-y-5">
+          {/* L15 Testphase: Enddatum, Umwandlung, Beenden, Löschung (Bestätigung + Plattform-Audit) */}
+          <TrialAdminCard
+            tenant={tenant}
+            isFullAdmin={isFullAdmin}
+            base={base}
+            op={sp.trial === "created" ? undefined : sp.trial}
+            notice={sp.trial === "created" ? (sp.invited ? "invited" : "created") : sp.trialDone ? "done" : null}
+          />
+
           {/* Lebenszyklus */}
           <div className="shadow-card rounded-xl border bg-card p-5">
             <p className="mb-3 font-heading text-sm font-semibold">{t("lifecycleTitle")}</p>
diff --git a/src/app/(platform)/admin/page.tsx b/src/app/(platform)/admin/page.tsx
index 866f4d5..fd268db 100644
--- a/src/app/(platform)/admin/page.tsx
+++ b/src/app/(platform)/admin/page.tsx
@@ -16,16 +16,22 @@ import {
 import { createTenant } from "@/server/actions/admin";
 import { getMailStatus } from "@/server/actions/mail";
 import { MailStatusPanel } from "@/components/mail-status-panel";
+import { getTranslations } from "next-intl/server";
+import { TrialBadge } from "@/components/trial/trial-badge";
 
 const STATUS_TONE: Record<string, "ok" | "warn" | "mut"> = { ACTIVE: "ok", SUSPENDED: "warn", ARCHIVED: "mut" };
 const STATUS_LABEL: Record<string, string> = { ACTIVE: "Aktiv", SUSPENDED: "Gesperrt", ARCHIVED: "Archiviert" };
 
-export default async function AdminPage({ searchParams }: { searchParams: Promise<{ new?: string }> }) {
+export default async function AdminPage({ searchParams }: { searchParams: Promise<{ new?: string; plan?: string }> }) {
   // Zugriff (Plattform-Session + MFA) wird im (platform)/layout.tsx erzwungen.
   const params = await searchParams;
+  // L15 Testphase: Filter Test/Voll
+  const tt = await getTranslations("trial.platform");
+  const planFilter = params.plan === "trial" ? "TRIAL" : params.plan === "full" ? "FULL" : null;
 
   const [tenants, mailStatus] = await Promise.all([
     prisma.tenant.findMany({
+      where: planFilter ? { plan: planFilter } : undefined,
       include: { _count: { select: { users: true } }, modules: true },
       orderBy: { createdAt: "asc" },
     }),
@@ -42,6 +48,7 @@ export default async function AdminPage({ searchParams }: { searchParams: Promis
         actions={
           <span className="flex items-center gap-2">
             <Button variant="outline" size="sm" nativeButton={false} render={<Link href="/admins" />}>Administratoren</Button>
+            <Button variant="outline" nativeButton={false} render={<Link href="/admin/trial" />}>{tt("newTrial")}</Button>
             <Button nativeButton={false} render={<Link href={params.new ? "/admin" : "/admin?new=1"} />}>
               <Plus className="size-4" /> Neuer Kunde
             </Button>
@@ -92,6 +99,23 @@ export default async function AdminPage({ searchParams }: { searchParams: Promis
         </div>
       )}
 
+      <nav aria-label={tt("filter")} className="mt-4 flex flex-wrap gap-2">
+        {[
+          { key: null, href: "/admin", label: tt("filterAll") },
+          { key: "TRIAL", href: "/admin?plan=trial", label: tt("filterTrial") },
+          { key: "FULL", href: "/admin?plan=full", label: tt("filterFull") },
+        ].map((f) => (
+          <Link
+            key={f.href}
+            href={f.href}
+            aria-current={planFilter === f.key ? "page" : undefined}
+            className={`inline-flex min-h-11 items-center rounded-full border px-4 text-[13px] font-semibold ${planFilter === f.key ? "border-[var(--ui-primary)] bg-[var(--ui-primary-soft)] text-[var(--ui-primary)]" : "text-muted-foreground hover:bg-muted"}`}
+          >
+            {f.label}
+          </Link>
+        ))}
+      </nav>
+
       <div className="shadow-card mt-4 rounded-xl border bg-card">
         <Table>
           <TableHeader>
@@ -99,6 +123,7 @@ export default async function AdminPage({ searchParams }: { searchParams: Promis
               <TableHead>Kunde</TableHead>
               <TableHead>Kürzel</TableHead>
               <TableHead>Status</TableHead>
+              <TableHead>{tt("colPlan")}</TableHead>
               <TableHead>Nutzer</TableHead>
               <TableHead>Aktive Module</TableHead>
             </TableRow>
@@ -114,6 +139,7 @@ export default async function AdminPage({ searchParams }: { searchParams: Promis
                   </TableCell>
                   <TableCell className="text-muted-foreground">{t.slug}</TableCell>
                   <TableCell><Pill tone={STATUS_TONE[t.status]}>{STATUS_LABEL[t.status]}</Pill></TableCell>
+                  <TableCell><TrialBadge tenant={t} /></TableCell>
                   <TableCell className="text-muted-foreground">{t._count.users}</TableCell>
                   <TableCell className="text-muted-foreground">{active > 0 ? `${active} Module` : "—"}</TableCell>
                 </TableRow>
diff --git a/src/app/(platform)/admin/trial/page.tsx b/src/app/(platform)/admin/trial/page.tsx
new file mode 100644
index 0000000..3fa05ad
--- /dev/null
+++ b/src/app/(platform)/admin/trial/page.tsx
@@ -0,0 +1,27 @@
+import Link from "next/link";
+import { getTranslations } from "next-intl/server";
+import { ArrowLeft } from "lucide-react";
+import { PageHead } from "@/components/mockup-ui";
+import { PlatformTrialCreateForm } from "@/components/trial/platform-forms";
+import { addDaysToKey, todayKey } from "@/lib/trial/dates";
+import { PLATFORM_TRIAL_MAX_DAYS, TRIAL_DEFAULT_DAYS } from "@/server/services/trial/config";
+
+export const dynamic = "force-dynamic";
+
+/** L15 Testphase: platform wizard "Testmandant anlegen" (access: (platform)/layout.tsx; action: full admins). */
+export default async function PlatformTrialWizardPage() {
+  const t = await getTranslations("trial.platform.wizard");
+  const ta = await getTranslations("admin");
+  const today = todayKey();
+  return (
+    <main className="flex-1 p-6">
+      <Link href="/admin" className="inline-flex min-h-11 items-center gap-1.5 text-[12.5px] font-semibold text-muted-foreground hover:text-foreground">
+        <ArrowLeft className="size-4" /> {ta("backToOverview")}
+      </Link>
+      <div className="mt-2 max-w-3xl">
+        <PageHead crumb={t("crumb")} title={t("title")} sub={t("sub")} />
+        <PlatformTrialCreateForm defaultEnd={addDaysToKey(today, TRIAL_DEFAULT_DAYS)} min={today} max={addDaysToKey(today, PLATFORM_TRIAL_MAX_DAYS)} />
+      </div>
+    </main>
+  );
+}
diff --git a/src/app/api/v1/work-orders/[id]/documents/route.ts b/src/app/api/v1/work-orders/[id]/documents/route.ts
index 94e10be..c4d6e15 100644
--- a/src/app/api/v1/work-orders/[id]/documents/route.ts
+++ b/src/app/api/v1/work-orders/[id]/documents/route.ts
@@ -3,6 +3,7 @@ import { assertSameOrigin, requireApiContext } from "@/server/api/context";
 import { ApiError, json, readFormData, toErrorResponse } from "@/server/api/respond";
 import { ServiceError } from "@/server/services/context";
 import { uploadWorkOrderDocument } from "@/server/services/work-orders/documents";
+import { assertTenantWritable } from "@/server/services/trial/state";
 
 /**
  * POST /api/v1/work-orders/[id]/documents — multipart upload (file, category, visibility, title?).
@@ -17,6 +18,7 @@ export async function POST(req: Request, { params }: { params: Promise<{ id: str
   try {
     assertSameOrigin(req);
     const ctx = await requireApiContext("work_orders", "document:write");
+    await assertTenantWritable(ctx.tenantId); // L15: not wrapped in withApi → explicit trial write lock
     const form = await readFormData(req);
     const file = form.get("file");
     if (!(file instanceof File) || file.size === 0) throw new ServiceError("invalid", "file_missing");
diff --git a/src/app/testen/bestaetigen/page.tsx b/src/app/testen/bestaetigen/page.tsx
new file mode 100644
index 0000000..5456817
--- /dev/null
+++ b/src/app/testen/bestaetigen/page.tsx
@@ -0,0 +1,48 @@
+import type { Metadata } from "next";
+import Link from "next/link";
+import { getLocale, getTranslations } from "next-intl/server";
+import { TrialConfirmForm } from "@/components/trial/confirm-form";
+import { formatDateKey } from "@/lib/trial/dates";
+import { peekTrialSignup } from "@/server/services/trial/signup";
+
+export async function generateMetadata(): Promise<Metadata> {
+  const t = await getTranslations("trial.meta");
+  return { title: t("confirmTitle") };
+}
+
+export const dynamic = "force-dynamic";
+
+/**
+ * L15 Testphase: landing page of the confirmation link. Shows the pending signup (link is only
+ * checked, not consumed); provisioning happens on the POST of the button (TrialConfirmForm).
+ */
+export default async function TrialConfirmPage({ searchParams }: { searchParams: Promise<{ token?: string }> }) {
+  const { token = "" } = await searchParams;
+  const [t, locale] = await Promise.all([getTranslations("trial.confirm"), getLocale()]);
+  const signup = await peekTrialSignup(token);
+
+  return (
+    <div className="shadow-card mt-4 w-full max-w-md self-start rounded-2xl border bg-card p-6 sm:p-8">
+      <h1 className="font-heading text-xl font-semibold">{t("title")}</h1>
+      {signup ? (
+        <>
+          <p className="mt-1 text-sm text-muted-foreground">{t("intro")}</p>
+          <dl className="mt-4 divide-y rounded-lg border text-sm">
+            <div className="flex justify-between gap-3 px-3 py-2"><dt className="text-muted-foreground">{t("company")}</dt><dd className="text-right font-medium">{signup.companyName}</dd></div>
+            <div className="flex justify-between gap-3 px-3 py-2"><dt className="text-muted-foreground">{t("until")}</dt><dd className="font-medium">{formatDateKey(signup.trialEndDate, locale)}</dd></div>
+            <div className="flex justify-between gap-3 px-3 py-2"><dt className="text-muted-foreground">{t("sampleData")}</dt><dd className="font-medium">{signup.sampleData ? t("yes") : t("no")}</dd></div>
+          </dl>
+          <TrialConfirmForm token={token} />
+        </>
+      ) : (
+        <>
+          <p role="alert" className="mt-4 rounded-lg bg-[rgba(255,107,107,0.16)] px-3 py-2 text-sm text-[var(--risk)]">{t("invalid")}</p>
+          <div className="mt-4 flex flex-col gap-1 text-center">
+            <Link href="/testen" className="flex min-h-11 items-center justify-center text-sm font-semibold text-[var(--ui-primary)]">{t("toSignup")}</Link>
+            <Link href="/login" className="flex min-h-11 items-center justify-center text-sm text-muted-foreground">{t("toLogin")}</Link>
+          </div>
+        </>
+      )}
+    </div>
+  );
+}
diff --git a/src/app/testen/datenschutz/page.tsx b/src/app/testen/datenschutz/page.tsx
new file mode 100644
index 0000000..1ca1c24
--- /dev/null
+++ b/src/app/testen/datenschutz/page.tsx
@@ -0,0 +1,14 @@
+import type { Metadata } from "next";
+import { getTranslations } from "next-intl/server";
+import { LegalPlaceholder } from "@/components/trial/legal-placeholder";
+
+export async function generateMetadata(): Promise<Metadata> {
+  const t = await getTranslations("trial.meta");
+  return { title: t("privacyTitle") };
+}
+
+/** L15 Testphase: placeholder privacy notice (operator replaces the text before go-live). */
+export default async function TrialPrivacyPage() {
+  const t = await getTranslations("trial");
+  return <LegalPlaceholder title={t("meta.privacyTitle")} paragraphs={[t("legal.privacyBody1"), t("legal.privacyBody2")]} placeholder={t("legal.placeholder")} back={t("legal.back")} />;
+}
diff --git a/src/app/testen/layout.tsx b/src/app/testen/layout.tsx
new file mode 100644
index 0000000..f7ea493
--- /dev/null
+++ b/src/app/testen/layout.tsx
@@ -0,0 +1,26 @@
+import Link from "next/link";
+import { getTranslations } from "next-intl/server";
+import { CraftviaLogo } from "@/components/brand/craftvia-logo";
+
+/** L15 Testphase: public shell of /testen (no session; see PUBLIC_PATHS in src/proxy.ts). */
+export default async function TrialPublicLayout({ children }: Readonly<{ children: React.ReactNode }>) {
+  const t = await getTranslations("trial.public");
+  return (
+    <div className="flex flex-1 flex-col bg-background">
+      <header className="flex items-center justify-between gap-3 px-4 py-4 sm:px-8">
+        <Link href="/testen" className="flex min-h-11 items-center" aria-label="Craftvia">
+          <CraftviaLogo variant="horizontal" height={32} />
+        </Link>
+        <p className="text-[13px] text-muted-foreground">
+          <span className="hidden sm:inline">{t("haveAccount")} </span>
+          <Link href="/login" className="inline-flex min-h-11 items-center font-semibold text-[var(--ui-primary)]">{t("login")}</Link>
+        </p>
+      </header>
+      <main className="flex flex-1 justify-center px-4 pb-10 sm:px-8">{children}</main>
+      <footer className="flex flex-wrap justify-center gap-4 border-t px-4 py-3 text-[12.5px] text-muted-foreground">
+        <Link href="/testen/nutzungsbedingungen" className="inline-flex min-h-11 items-center hover:text-foreground">{t("terms")}</Link>
+        <Link href="/testen/datenschutz" className="inline-flex min-h-11 items-center hover:text-foreground">{t("privacy")}</Link>
+      </footer>
+    </div>
+  );
+}
diff --git a/src/app/testen/nutzungsbedingungen/page.tsx b/src/app/testen/nutzungsbedingungen/page.tsx
new file mode 100644
index 0000000..dd07aed
--- /dev/null
+++ b/src/app/testen/nutzungsbedingungen/page.tsx
@@ -0,0 +1,14 @@
+import type { Metadata } from "next";
+import { getTranslations } from "next-intl/server";
+import { LegalPlaceholder } from "@/components/trial/legal-placeholder";
+
+export async function generateMetadata(): Promise<Metadata> {
+  const t = await getTranslations("trial.meta");
+  return { title: t("termsTitle") };
+}
+
+/** L15 Testphase: placeholder terms of use (operator replaces the text before go-live). */
+export default async function TrialTermsPage() {
+  const t = await getTranslations("trial");
+  return <LegalPlaceholder title={t("meta.termsTitle")} paragraphs={[t("legal.termsBody1"), t("legal.termsBody2")]} placeholder={t("legal.placeholder")} back={t("legal.back")} />;
+}
diff --git a/src/app/testen/page.tsx b/src/app/testen/page.tsx
new file mode 100644
index 0000000..81fa6f6
--- /dev/null
+++ b/src/app/testen/page.tsx
@@ -0,0 +1,41 @@
+import type { Metadata } from "next";
+import { getLocale, getTranslations } from "next-intl/server";
+import { CheckCircle2 } from "lucide-react";
+import { TrialSignupWizard } from "@/components/trial/signup-wizard";
+import { MODULES } from "@/lib/modules";
+import { DEFAULT_PASSWORD_POLICY, describePasswordPolicy } from "@/lib/password-policy";
+import { currentTrialBounds } from "@/server/services/trial/signup";
+
+export async function generateMetadata(): Promise<Metadata> {
+  const t = await getTranslations("trial.meta");
+  return { title: t("title") };
+}
+
+// the date bounds depend on "today" — never prerender
+export const dynamic = "force-dynamic";
+
+/** L15 Testphase: public wizard "Kostenlos testen". */
+export default async function TrialSignupPage() {
+  const [t, tm, locale] = await Promise.all([getTranslations("trial.public"), getTranslations("modules"), getLocale()]);
+  const modules = MODULES.map((m) => ({ key: m.key, label: tm(m.nav) }));
+
+  return (
+    <div className="grid w-full max-w-5xl gap-8 lg:grid-cols-[1fr_1.2fr] lg:items-start">
+      <section className="pt-2 lg:pt-10">
+        <h1 className="font-heading text-[28px] leading-tight font-semibold sm:text-[34px]">{t("heading")}</h1>
+        <p className="mt-3 text-[15px] text-muted-foreground">{t("intro")}</p>
+        <ul className="mt-6 space-y-3">
+          {(["benefit1", "benefit2", "benefit3"] as const).map((k) => (
+            <li key={k} className="flex items-start gap-2.5 text-[14.5px]">
+              <CheckCircle2 className="mt-0.5 size-5 shrink-0 text-[var(--ok)]" aria-hidden />
+              {t(k)}
+            </li>
+          ))}
+        </ul>
+      </section>
+      <section className="shadow-card relative rounded-2xl border bg-card p-5 sm:p-8">
+        <TrialSignupWizard bounds={currentTrialBounds()} modules={modules} passwordPolicy={describePasswordPolicy(DEFAULT_PASSWORD_POLICY)} locale={locale} />
+      </section>
+    </div>
+  );
+}
diff --git a/src/components/trial/confirm-form.tsx b/src/components/trial/confirm-form.tsx
new file mode 100644
index 0000000..c666565
--- /dev/null
+++ b/src/components/trial/confirm-form.tsx
@@ -0,0 +1,34 @@
+"use client";
+
+import { useActionState } from "react";
+import Link from "next/link";
+import { useTranslations } from "next-intl";
+import { Button } from "@/components/ui/button";
+import { confirmTrialSignupAction, type TrialConfirmState } from "@/server/actions/trial-signup";
+
+/** L15 Testphase: confirmation button (POST) — the GET link alone never provisions anything. */
+export function TrialConfirmForm({ token }: { token: string }) {
+  const t = useTranslations("trial.confirm");
+  const [state, action, pending] = useActionState<TrialConfirmState, FormData>(confirmTrialSignupAction, { status: "idle" });
+
+  if (state.status === "invalid" || state.status === "expired") {
+    return (
+      <div className="mt-4 space-y-3">
+        <p role="alert" className="rounded-lg bg-[rgba(255,107,107,0.16)] px-3 py-2 text-sm text-[var(--risk)]">{t(state.status)}</p>
+        <Link href="/testen" className="flex min-h-11 items-center justify-center text-sm font-semibold text-[var(--ui-primary)]">{t("toSignup")}</Link>
+      </div>
+    );
+  }
+
+  return (
+    <form action={action} className="mt-5 space-y-3">
+      <input type="hidden" name="token" value={token} />
+      {state.status === "rate_limited" && (
+        <p role="alert" className="rounded-lg bg-[rgba(255,107,107,0.16)] px-3 py-2 text-sm text-[var(--risk)]">{t("rate_limited")}</p>
+      )}
+      <Button type="submit" className="h-11 w-full" disabled={pending}>
+        {pending ? t("pending") : t("button")}
+      </Button>
+    </form>
+  );
+}
diff --git a/src/components/trial/getting-started.tsx b/src/components/trial/getting-started.tsx
new file mode 100644
index 0000000..10724d3
--- /dev/null
+++ b/src/components/trial/getting-started.tsx
@@ -0,0 +1,58 @@
+import Link from "next/link";
+import { getTranslations } from "next-intl/server";
+import { CheckCircle2, Circle } from "lucide-react";
+import type { ServiceCtx } from "@/server/services/context";
+import { getOnboardingChecklist } from "@/server/services/trial/onboarding";
+import { getTrialState } from "@/server/services/trial/state";
+import { hideOnboardingAction, toggleOnboardingItemAction } from "@/server/actions/trial-tenant";
+
+/** L15 Testphase: "Erste Schritte" card on the dashboard (tenant admins of trial-origin tenants). */
+export async function GettingStarted({ ctx, welcome = false }: { ctx: ServiceCtx; welcome?: boolean }) {
+  const checklist = await getOnboardingChecklist(ctx);
+  if (!checklist) return null;
+  const [t, trial] = await Promise.all([getTranslations("trial.onboarding"), getTrialState(ctx.tenantId)]);
+  const writable = !trial.readOnly;
+  const percent = Math.round((checklist.completed / checklist.total) * 100);
+
+  return (
+    <section aria-labelledby="getting-started-title" className="shadow-card mb-4 rounded-xl border bg-card p-4 md:p-5">
+      <div className="flex flex-wrap items-start justify-between gap-3">
+        <div>
+          {welcome && <p className="mb-1 text-sm font-semibold text-[var(--ok)]">{t("welcome")}</p>}
+          <h2 id="getting-started-title" className="font-heading text-[15px] font-semibold">{t("title")}</h2>
+          <p className="text-[12.5px] text-muted-foreground">{t("progress", { done: checklist.completed, total: checklist.total })}</p>
+        </div>
+        {writable && (
+          <form action={hideOnboardingAction}>
+            <button type="submit" className="min-h-11 rounded-md px-3 text-[13px] font-semibold text-muted-foreground hover:bg-muted hover:text-foreground">{t("hide")}</button>
+          </form>
+        )}
+      </div>
+      <div className="mt-3 h-2 w-full overflow-hidden rounded-full bg-muted" role="progressbar" aria-valuemin={0} aria-valuemax={checklist.total} aria-valuenow={checklist.completed} aria-label={t("progress", { done: checklist.completed, total: checklist.total })}>
+        <div className="h-full rounded-full bg-[var(--ok)]" style={{ width: `${percent}%` }} />
+      </div>
+      <ul className="mt-3 divide-y">
+        {checklist.items.map((item) => (
+          <li key={item.key} className="flex flex-wrap items-center gap-3 py-2.5">
+            {item.done ? <CheckCircle2 className="size-5 shrink-0 text-[var(--ok)]" aria-hidden /> : <Circle className="size-5 shrink-0 text-muted-foreground" aria-hidden />}
+            <div className="min-w-0 flex-1">
+              <p className={item.done ? "text-sm font-semibold text-muted-foreground line-through" : "text-sm font-semibold"}>
+                <span className="sr-only">{item.done ? t("doneLabel") : t("openLabel")}: </span>
+                {t(`items.${item.key}.title`)}
+              </p>
+              <p className="text-[12.5px] text-muted-foreground">{t(`items.${item.key}.text`)}{item.auto ? ` · ${t("auto")}` : ""}</p>
+            </div>
+            <Link href={item.href} className="inline-flex min-h-11 items-center rounded-md px-3 text-[13px] font-semibold text-[var(--ui-primary)] hover:bg-muted">{t("open")}</Link>
+            {writable && !item.auto && (
+              <form action={toggleOnboardingItemAction}>
+                <input type="hidden" name="key" value={item.key} />
+                <input type="hidden" name="done" value={item.done ? "0" : "1"} />
+                <button type="submit" className="min-h-11 rounded-md border px-3 text-[13px] hover:bg-muted">{item.done ? t("markOpen") : t("markDone")}</button>
+              </form>
+            )}
+          </li>
+        ))}
+      </ul>
+    </section>
+  );
+}
diff --git a/src/components/trial/legal-placeholder.tsx b/src/components/trial/legal-placeholder.tsx
new file mode 100644
index 0000000..bba0aa3
--- /dev/null
+++ b/src/components/trial/legal-placeholder.tsx
@@ -0,0 +1,15 @@
+import Link from "next/link";
+
+/** L15 Testphase: simple legal text page (terms/privacy placeholders under /testen). */
+export function LegalPlaceholder({ title, paragraphs, placeholder, back }: { title: string; paragraphs: string[]; placeholder: string; back: string }) {
+  return (
+    <article className="shadow-card mt-4 w-full max-w-2xl self-start rounded-2xl border bg-card p-6 sm:p-8">
+      <h1 className="font-heading text-xl font-semibold">{title}</h1>
+      <p className="mt-2 rounded-lg bg-muted px-3 py-2 text-[13px] text-muted-foreground">{placeholder}</p>
+      {paragraphs.map((p) => (
+        <p key={p} className="mt-3 text-sm leading-relaxed">{p}</p>
+      ))}
+      <Link href="/testen" className="mt-4 inline-flex min-h-11 items-center text-sm font-semibold text-[var(--ui-primary)]">← {back}</Link>
+    </article>
+  );
+}
diff --git a/src/components/trial/platform-forms.tsx b/src/components/trial/platform-forms.tsx
new file mode 100644
index 0000000..5172cee
--- /dev/null
+++ b/src/components/trial/platform-forms.tsx
@@ -0,0 +1,115 @@
+"use client";
+
+import { useActionState } from "react";
+import Link from "next/link";
+import { useTranslations } from "next-intl";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { createTrialTenantAction, type PlatformTrialState } from "@/server/actions/trial-platform";
+
+const ERR = "rounded-lg bg-[rgba(255,107,107,0.16)] px-3 py-2 text-sm text-[var(--risk)]";
+
+function ErrorText({ state }: { state: PlatformTrialState }) {
+  const t = useTranslations("trial.platform.errors");
+  if (state.status !== "error") return null;
+  return <p role="alert" className={ERR}>{t.has(state.code) ? t(state.code) : t("failed")}</p>;
+}
+
+/** L15 Testphase: platform wizard "Testmandant anlegen" (one page, four sections). */
+export function PlatformTrialCreateForm({ defaultEnd, min, max }: { defaultEnd: string; min: string; max: string }) {
+  const t = useTranslations("trial.platform.wizard");
+  const [state, action, pending] = useActionState<PlatformTrialState, FormData>(createTrialTenantAction, { status: "idle" });
+  const section = "shadow-card rounded-xl border bg-card p-5";
+  return (
+    <form action={action} className="grid gap-4">
+      <fieldset className={section}>
+        <legend className="font-heading text-sm font-semibold">{t("sectionCompany")}</legend>
+        <div className="mt-3 grid gap-4 md:grid-cols-2">
+          <div>
+            <Label htmlFor="companyName">{t("companyName")} *</Label>
+            <Input id="companyName" name="companyName" required minLength={2} maxLength={120} className="mt-1 h-11" />
+          </div>
+          <div>
+            <Label htmlFor="sector">{t("sector")}</Label>
+            <Input id="sector" name="sector" maxLength={80} className="mt-1 h-11" />
+          </div>
+        </div>
+      </fieldset>
+      <fieldset className={section}>
+        <legend className="font-heading text-sm font-semibold">{t("sectionAdmin")}</legend>
+        <div className="mt-3 grid gap-4 md:grid-cols-2">
+          <div>
+            <Label htmlFor="adminName">{t("adminName")} *</Label>
+            <Input id="adminName" name="adminName" required minLength={2} maxLength={120} className="mt-1 h-11" />
+          </div>
+          <div>
+            <Label htmlFor="adminEmail">{t("adminEmail")} *</Label>
+            <Input id="adminEmail" name="adminEmail" type="email" required maxLength={200} className="mt-1 h-11" />
+          </div>
+        </div>
+        <p className="mt-2 text-[12px] text-muted-foreground">{t("adminHint")}</p>
+      </fieldset>
+      <fieldset className={section}>
+        <legend className="font-heading text-sm font-semibold">{t("sectionPeriod")}</legend>
+        <div className="mt-3 max-w-xs">
+          <Label htmlFor="endDate">{t("endDate")} *</Label>
+          <Input id="endDate" name="endDate" type="date" required min={min} max={max} defaultValue={defaultEnd} className="mt-1 h-11" />
+          <p className="mt-1 text-[12px] text-muted-foreground">{t("endDateHint")}</p>
+        </div>
+      </fieldset>
+      <fieldset className={section}>
+        <legend className="font-heading text-sm font-semibold">{t("sectionSetup")}</legend>
+        <label className="mt-3 flex min-h-11 items-center gap-2 text-sm">
+          <input type="checkbox" name="sampleData" defaultChecked className="size-5" /> {t("sampleData")}
+        </label>
+      </fieldset>
+      <ErrorText state={state} />
+      <div className="flex flex-wrap gap-2">
+        <Button type="submit" className="h-11" disabled={pending}>{pending ? t("submitting") : t("submit")}</Button>
+        <Button variant="outline" className="h-11" nativeButton={false} render={<Link href="/admin" />}>{t("cancel")}</Button>
+      </div>
+    </form>
+  );
+}
+
+/** L15 Testphase: confirmation form of one lifecycle operation (bound server action). */
+export function TrialLifecycleForm({
+  action,
+  withDate,
+  defaultEnd,
+  min,
+  max,
+  closeHref,
+  destructive,
+}: {
+  action: (prev: PlatformTrialState, fd: FormData) => Promise<PlatformTrialState>;
+  withDate: boolean;
+  defaultEnd?: string;
+  min?: string;
+  max?: string;
+  closeHref: string;
+  destructive?: boolean;
+}) {
+  const t = useTranslations("trial.platform.ops");
+  const tw = useTranslations("trial.platform.wizard");
+  const [state, formAction, pending] = useActionState<PlatformTrialState, FormData>(action, { status: "idle" });
+  return (
+    <form action={formAction} className="space-y-3">
+      {withDate && (
+        <div className="max-w-xs">
+          <Label htmlFor="op-endDate">{tw("endDate")} *</Label>
+          <Input id="op-endDate" name="endDate" type="date" required min={min} max={max} defaultValue={defaultEnd} className="mt-1 h-11" />
+        </div>
+      )}
+      <label className="flex min-h-11 items-center gap-2 text-sm">
+        <input type="checkbox" name="confirm" className="size-5" required /> {t("confirm")}
+      </label>
+      <ErrorText state={state} />
+      <div className="flex flex-wrap gap-2">
+        <Button type="submit" className="h-11" variant={destructive ? "destructive" : "default"} disabled={pending}>{pending ? t("submitting") : t("submit")}</Button>
+        <Button variant="outline" className="h-11" nativeButton={false} render={<Link href={closeHref} />}>{t("close")}</Button>
+      </div>
+    </form>
+  );
+}
diff --git a/src/components/trial/signup-wizard.tsx b/src/components/trial/signup-wizard.tsx
new file mode 100644
index 0000000..7f455e0
--- /dev/null
+++ b/src/components/trial/signup-wizard.tsx
@@ -0,0 +1,341 @@
+"use client";
+
+import { useMemo, useState, useTransition } from "react";
+import Link from "next/link";
+import { useTranslations } from "next-intl";
+import { Check, MailCheck } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { Input } from "@/components/ui/input";
+import { Label } from "@/components/ui/label";
+import { cn } from "@/lib/utils";
+import { diffDayKeys, formatDateKey, type TrialBounds } from "@/lib/trial/dates";
+import {
+  TRIAL_COMPANY_SIZES,
+  TRIAL_SECTOR_KEYS,
+  TRIAL_STEPS,
+  validateTrialSignup,
+  validateTrialStep,
+  type FieldErrors,
+  type TrialSignupValues,
+  type TrialStep,
+} from "@/lib/trial/signup";
+import { checkTrialStepAction, submitTrialSignupAction } from "@/server/actions/trial-signup";
+
+/**
+ * L15 Testphase: public 5-step wizard. All values live in one state object, so "Zurück" never loses
+ * input. Each step is validated in the browser (same rules as the server) and then by the server
+ * (`checkTrialStepAction`); the final submit validates everything again.
+ */
+
+type Props = {
+  bounds: TrialBounds;
+  modules: { key: string; label: string }[];
+  passwordPolicy: string;
+  locale: string;
+};
+
+const STEP_FIELDS: Record<TrialStep, (keyof TrialSignupValues)[]> = {
+  company: ["companyName", "sector", "companySize"],
+  account: ["adminName", "email", "password"],
+  period: ["trialEndDate"],
+  setup: ["sampleData", "modules"],
+  summary: ["acceptTerms", "acceptPrivacy"],
+};
+
+const fieldCls = "mt-1 h-11 text-base sm:text-sm";
+const selectCls = "mt-1 h-11 w-full rounded-md border border-input bg-background px-3 text-base sm:text-sm";
+const errorCls = "mt-1 text-[13px] text-[var(--risk)]";
+
+export function TrialSignupWizard({ bounds, modules, passwordPolicy, locale }: Props) {
+  const t = useTranslations("trial");
+  const [step, setStep] = useState(0);
+  const [sectorKey, setSectorKey] = useState("");
+  const [showPassword, setShowPassword] = useState(false);
+  const [values, setValues] = useState<TrialSignupValues>({
+    companyName: "",
+    sector: "",
+    companySize: "",
+    adminName: "",
+    email: "",
+    password: "",
+    trialEndDate: bounds.defaultEnd,
+    sampleData: true,
+    modules: modules.map((m) => m.key),
+    acceptTerms: false,
+    acceptPrivacy: false,
+    website: "",
+  });
+  const [errors, setErrors] = useState<FieldErrors>({});
+  const [sent, setSent] = useState(false);
+  const [pending, startTransition] = useTransition();
+
+  const current = TRIAL_STEPS[step];
+  const set = <K extends keyof TrialSignupValues>(key: K, value: TrialSignupValues[K]) => {
+    setValues((v) => ({ ...v, [key]: value }));
+    setErrors((e) => ({ ...e, [key]: undefined, _form: undefined }));
+  };
+  const days = useMemo(() => (/^\d{4}-\d{2}-\d{2}$/.test(values.trialEndDate) ? diffDayKeys(bounds.today, values.trialEndDate) : null), [values.trialEndDate, bounds.today]);
+  const err = (key: keyof FieldErrors) => (errors[key] ? t(`errors.${errors[key]}`) : null);
+
+  function firstStepWithError(e: FieldErrors): number {
+    const idx = TRIAL_STEPS.findIndex((s) => STEP_FIELDS[s].some((f) => e[f]));
+    return idx === -1 ? step : idx;
+  }
+
+  function next() {
+    const local = validateTrialStep(current, values, bounds);
+    if (Object.keys(local).length) return setErrors(local);
+    startTransition(async () => {
+      const server = await checkTrialStepAction(current, values);
+      if (Object.keys(server).length) return setErrors(server);
+      setErrors({});
+      setStep((s) => Math.min(s + 1, TRIAL_STEPS.length - 1));
+    });
+  }
+
+  function submit() {
+    const local = validateTrialSignup(values, bounds);
+    if (Object.keys(local).length) {
+      setErrors(local);
+      return setStep(firstStepWithError(local));
+    }
+    startTransition(async () => {
+      const res = await submitTrialSignupAction(values);
+      if (res.status === "sent") return setSent(true);
+      setErrors(res.errors);
+      setStep(firstStepWithError(res.errors));
+    });
+  }
+
+  if (sent) {
+    return (
+      <div role="status" className="space-y-3 text-center">
+        <MailCheck className="mx-auto size-10 text-[var(--ok)]" aria-hidden />
+        <h2 className="font-heading text-xl font-semibold">{t("sent.title")}</h2>
+        <p className="text-sm">{t("sent.body")}</p>
+        <p className="text-[13px] text-muted-foreground">{t("sent.hint")}</p>
+        <Button variant="outline" className="h-11" onClick={() => { setSent(false); setStep(0); }}>
+          {t("sent.again")}
+        </Button>
+      </div>
+    );
+  }
+
+  return (
+    <form
+      noValidate
+      onSubmit={(e) => {
+        e.preventDefault();
+        if (current === "summary") submit();
+        else next();
+      }}
+    >
+      {/* Progress */}
+      <nav aria-label={t("progressLabel")}>
+        <p className="text-[13px] font-medium text-muted-foreground">{t("progress", { current: step + 1, total: TRIAL_STEPS.length })}</p>
+        <ol className="mt-2 grid grid-cols-5 gap-1.5">
+          {TRIAL_STEPS.map((s, i) => (
+            <li key={s} aria-current={i === step ? "step" : undefined}>
+              <button
+                type="button"
+                disabled={i > step || pending}
+                onClick={() => setStep(i)}
+                className="flex w-full flex-col items-start gap-1 text-left disabled:cursor-default"
+              >
+                <span className={cn("h-1.5 w-full rounded-full", i <= step ? "bg-[var(--ui-primary)]" : "bg-muted")} />
+                <span className={cn("hidden text-[11.5px] sm:inline", i === step ? "font-semibold text-foreground" : "text-muted-foreground")}>
+                  {i < step && <Check className="mr-0.5 inline size-3" aria-hidden />}
+                  {t(`steps.${s}`)}
+                </span>
+              </button>
+            </li>
+          ))}
+        </ol>
+      </nav>
+
+      <h2 className="mt-5 font-heading text-lg font-semibold">{t(`steps.${current}`)}</h2>
+
+      {/* Honeypot: invisible for people, not announced to screen readers */}
+      <div aria-hidden className="absolute -left-[10000px] top-auto size-px overflow-hidden">
+        <label htmlFor="website">{t("fields.website")}</label>
+        <input id="website" name="website" tabIndex={-1} autoComplete="off" value={values.website} onChange={(e) => set("website", e.target.value)} />
+      </div>
+
+      <div className="mt-4 space-y-4">
+        {current === "company" && (
+          <>
+            <div>
+              <Label htmlFor="companyName">{t("fields.companyName")} *</Label>
+              <Input id="companyName" className={fieldCls} autoComplete="organization" value={values.companyName} onChange={(e) => set("companyName", e.target.value)} aria-invalid={!!errors.companyName} aria-describedby={errors.companyName ? "companyName-error" : undefined} />
+              {err("companyName") && <p id="companyName-error" className={errorCls}>{err("companyName")}</p>}
+            </div>
+            <div>
+              <Label htmlFor="sector">{t("fields.sector")}</Label>
+              <select
+                id="sector"
+                className={selectCls}
+                value={sectorKey}
+                onChange={(e) => {
+                  const key = e.target.value;
+                  setSectorKey(key);
+                  set("sector", key && key !== "other" ? t(`sectors.${key}`) : "");
+                }}
+              >
+                <option value="">{t("fields.sectorChoose")}</option>
+                {TRIAL_SECTOR_KEYS.map((k) => (
+                  <option key={k} value={k}>{t(`sectors.${k}`)}</option>
+                ))}
+              </select>
+              {sectorKey === "other" && (
+                <>
+                  <Label htmlFor="sectorOther" className="mt-3 block">{t("fields.sectorOther")}</Label>
+                  <Input id="sectorOther" className={fieldCls} value={values.sector} onChange={(e) => set("sector", e.target.value)} />
+                </>
+              )}
+              {err("sector") && <p className={errorCls}>{err("sector")}</p>}
+            </div>
+            <div>
+              <Label htmlFor="companySize">{t("fields.companySize")}</Label>
+              <select id="companySize" className={selectCls} value={values.companySize} onChange={(e) => set("companySize", e.target.value)}>
+                <option value="">{t("fields.companySizeNone")}</option>
+                {TRIAL_COMPANY_SIZES.map((s) => (
+                  <option key={s} value={s}>{t(`sizes.${s.replace(/[^0-9]/g, "_")}`)}</option>
+                ))}
+              </select>
+              {err("companySize") && <p className={errorCls}>{err("companySize")}</p>}
+            </div>
+          </>
+        )}
+
+        {current === "account" && (
+          <>
+            <div>
+              <Label htmlFor="adminName">{t("fields.adminName")} *</Label>
+              <Input id="adminName" className={fieldCls} autoComplete="name" value={values.adminName} onChange={(e) => set("adminName", e.target.value)} aria-invalid={!!errors.adminName} />
+              {err("adminName") && <p className={errorCls}>{err("adminName")}</p>}
+            </div>
+            <div>
+              <Label htmlFor="email">{t("fields.email")} *</Label>
+              <Input id="email" type="email" inputMode="email" className={fieldCls} autoComplete="email" value={values.email} onChange={(e) => set("email", e.target.value)} aria-invalid={!!errors.email} aria-describedby="email-hint" />
+              <p id="email-hint" className="mt-1 text-[12.5px] text-muted-foreground">{t("fields.emailHint")}</p>
+              {err("email") && <p className={errorCls}>{err("email")}</p>}
+            </div>
+            <div>
+              <Label htmlFor="password">{t("fields.password")} *</Label>
+              <Input id="password" type={showPassword ? "text" : "password"} className={fieldCls} autoComplete="new-password" value={values.password} onChange={(e) => set("password", e.target.value)} aria-invalid={!!errors.password} aria-describedby="password-hint" />
+              <p id="password-hint" className="mt-1 text-[12.5px] text-muted-foreground">{t("fields.passwordHint", { policy: passwordPolicy })}</p>
+              <label className="mt-2 flex min-h-11 items-center gap-2 text-sm">
+                <input type="checkbox" className="size-5" checked={showPassword} onChange={(e) => setShowPassword(e.target.checked)} />
+                {t("fields.showPassword")}
+              </label>
+              {err("password") && <p className={errorCls}>{err("password")}</p>}
+            </div>
+          </>
+        )}
+
+        {current === "period" && (
+          <div>
+            <Label htmlFor="trialEndDate">{t("fields.trialEndDate")} *</Label>
+            <Input id="trialEndDate" type="date" className={fieldCls} min={bounds.min} max={bounds.max} value={values.trialEndDate} onChange={(e) => set("trialEndDate", e.target.value)} aria-invalid={!!errors.trialEndDate} aria-describedby="period-range" />
+            <p id="period-range" className="mt-1 text-[12.5px] text-muted-foreground">
+              {t("period.range", { min: formatDateKey(bounds.min, locale), max: formatDateKey(bounds.max, locale) })}
+            </p>
+            {err("trialEndDate") ? (
+              <p className={errorCls}>{err("trialEndDate")}</p>
+            ) : (
+              days !== null && days > 0 && (
+                <p className="mt-3 rounded-lg bg-[var(--ui-primary-soft)] px-3 py-2 text-sm font-semibold" aria-live="polite">
+                  {t("period.until", { date: formatDateKey(values.trialEndDate, locale), days })}
+                </p>
+              )
+            )}
+            <p className="mt-3 text-[13px] text-muted-foreground">{t("period.afterEnd")}</p>
+          </div>
+        )}
+
+        {current === "setup" && (
+          <>
+            <label className="flex min-h-11 items-start gap-3 rounded-lg border p-3">
+              <input type="checkbox" className="mt-0.5 size-5" checked={values.sampleData} onChange={(e) => set("sampleData", e.target.checked)} />
+              <span>
+                <span className="block text-sm font-semibold">{t("fields.sampleData")}</span>
+                <span className="block text-[12.5px] text-muted-foreground">{t("fields.sampleDataHint")}</span>
+              </span>
+            </label>
+            <fieldset>
+              <legend className="text-sm font-semibold">{t("fields.modules")}</legend>
+              <p className="text-[12.5px] text-muted-foreground">{t("fields.modulesHint")}</p>
+              <div className="mt-2 grid gap-1 sm:grid-cols-2">
+                {modules.map((m) => (
+                  <label key={m.key} className="flex min-h-11 items-center gap-2 rounded-md px-2 text-sm hover:bg-muted">
+                    <input
+                      type="checkbox"
+                      className="size-5"
+                      checked={values.modules.includes(m.key)}
+                      onChange={(e) => set("modules", e.target.checked ? [...values.modules, m.key] : values.modules.filter((k) => k !== m.key))}
+                    />
+                    {m.label}
+                  </label>
+                ))}
+              </div>
+              {err("modules") && <p className={errorCls}>{err("modules")}</p>}
+            </fieldset>
+          </>
+        )}
+
+        {current === "summary" && (
+          <>
+            <p className="text-sm text-muted-foreground">{t("summary.intro")}</p>
+            <dl className="divide-y rounded-lg border text-sm">
+              {[
+                { step: 0, label: t("steps.company"), value: `${values.companyName} · ${values.sector || t("summary.noSector")}` },
+                { step: 1, label: t("steps.account"), value: `${values.adminName} · ${values.email}` },
+                { step: 2, label: t("steps.period"), value: days !== null ? t("period.until", { date: formatDateKey(values.trialEndDate, locale), days }) : values.trialEndDate },
+                { step: 3, label: t("steps.setup"), value: `${values.sampleData ? t("summary.sampleYes") : t("summary.sampleNo")} · ${t("summary.modulesCount", { count: values.modules.length, total: modules.length })}` },
+              ].map((row) => (
+                <div key={row.step} className="flex items-start justify-between gap-3 px-3 py-2.5">
+                  <div className="min-w-0">
+                    <dt className="text-[12px] text-muted-foreground">{row.label}</dt>
+                    <dd className="break-words">{row.value}</dd>
+                  </div>
+                  <button type="button" className="min-h-11 shrink-0 px-2 text-[13px] font-semibold text-[var(--ui-primary)]" onClick={() => setStep(row.step)}>
+                    {t("summary.edit")}
+                  </button>
+                </div>
+              ))}
+            </dl>
+            <label className="flex min-h-11 items-start gap-3">
+              <input type="checkbox" className="mt-0.5 size-5" checked={values.acceptTerms} onChange={(e) => set("acceptTerms", e.target.checked)} aria-invalid={!!errors.acceptTerms} />
+              <span className="text-sm">
+                {t.rich("fields.acceptTerms", { link: () => <Link href="/testen/nutzungsbedingungen" target="_blank" className="font-semibold text-[var(--ui-primary)] underline">{t("public.terms")}</Link> })}
+              </span>
+            </label>
+            {err("acceptTerms") && <p className={errorCls}>{err("acceptTerms")}</p>}
+            <label className="flex min-h-11 items-start gap-3">
+              <input type="checkbox" className="mt-0.5 size-5" checked={values.acceptPrivacy} onChange={(e) => set("acceptPrivacy", e.target.checked)} aria-invalid={!!errors.acceptPrivacy} />
+              <span className="text-sm">
+                {t.rich("fields.acceptPrivacy", { link: () => <Link href="/testen/datenschutz" target="_blank" className="font-semibold text-[var(--ui-primary)] underline">{t("public.privacy")}</Link> })}
+              </span>
+            </label>
+            {err("acceptPrivacy") && <p className={errorCls}>{err("acceptPrivacy")}</p>}
+          </>
+        )}
+      </div>
+
+      {err("_form") && (
+        <p role="alert" className="mt-4 rounded-lg bg-[rgba(255,107,107,0.16)] px-3 py-2 text-sm text-[var(--risk)]">
+          {err("_form")}
+        </p>
+      )}
+
+      <div className="mt-6 flex items-center justify-between gap-3">
+        <Button type="button" variant="outline" className="h-11 min-w-24" disabled={step === 0 || pending} onClick={() => { setErrors({}); setStep((s) => Math.max(0, s - 1)); }}>
+          {t("actions.back")}
+        </Button>
+        <Button type="submit" className="h-11 min-w-32" disabled={pending}>
+          {current === "summary" ? (pending ? t("actions.submitting") : t("actions.submit")) : pending ? t("actions.checking") : t("actions.next")}
+        </Button>
+      </div>
+    </form>
+  );
+}
diff --git a/src/components/trial/trial-admin-card.tsx b/src/components/trial/trial-admin-card.tsx
new file mode 100644
index 0000000..54df08b
--- /dev/null
+++ b/src/components/trial/trial-admin-card.tsx
@@ -0,0 +1,89 @@
+import Link from "next/link";
+import { getLocale, getTranslations } from "next-intl/server";
+import { Button } from "@/components/ui/button";
+import { Modal } from "@/components/modal";
+import { Pill } from "@/components/mockup-ui";
+import { addDaysToKey, formatDateKey, formatInstantDate, todayKey } from "@/lib/trial/dates";
+import { trialLifecycleAction } from "@/server/actions/trial-platform";
+import { PLATFORM_TRIAL_MAX_DAYS } from "@/server/services/trial/config";
+import { computeTrialState, type TenantTrialRow } from "@/server/services/trial/state";
+import { TrialLifecycleForm } from "./platform-forms";
+
+const OPS = ["extend", "convert", "end", "schedule", "cancel"] as const;
+type Op = (typeof OPS)[number];
+
+/**
+ * L15 Testphase: trial card on the platform tenant detail page with lifecycle actions (full admins).
+ * Each action opens a confirmation popup (?trial=<op>, existing Modal pattern).
+ */
+export async function TrialAdminCard({
+  tenant,
+  isFullAdmin,
+  base,
+  op,
+  notice,
+}: {
+  tenant: TenantTrialRow & { id: string; trialSource: string | null; status: string };
+  isFullAdmin: boolean;
+  base: string;
+  op?: string;
+  notice?: "created" | "invited" | "done" | null;
+}) {
+  if (!tenant.trialStartedAt) return null;
+  const [t, locale] = await Promise.all([getTranslations("trial.platform"), getLocale()]);
+  const state = computeTrialState(tenant);
+  const deleted = !!tenant.trialDeletedAt;
+  const isTrial = tenant.plan === "TRIAL" && !deleted;
+  const today = todayKey();
+  const activeOp = isFullAdmin && isTrial && (OPS as readonly string[]).includes(op ?? "") ? (op as Op) : null;
+
+  const stateText = deleted ? t("card.stateDeleted") : tenant.plan === "FULL" ? t("card.stateConverted") : state.expired ? t("card.stateExpired") : t("card.stateActive");
+  const actions: { op: Op; show: boolean }[] = [
+    { op: "extend", show: true },
+    { op: "convert", show: true },
+    { op: "end", show: !state.expired },
+    { op: "schedule", show: !tenant.deletionDueAt },
+    { op: "cancel", show: !!tenant.deletionDueAt },
+  ];
+
+  return (
+    <div className="shadow-card rounded-xl border bg-card p-5" data-trial-card>
+      <p className="mb-2 font-heading text-sm font-semibold">{t("card.title")}</p>
+      {notice && <p role="status" className="mb-3 rounded-lg bg-[rgba(57,192,127,0.14)] px-3 py-2 text-[12.5px] text-[var(--ok)]">{t(`card.${notice}`)}</p>}
+      <dl className="space-y-1.5 text-[13px]">
+        <div className="flex justify-between gap-2"><dt className="text-muted-foreground">{t("card.state")}</dt><dd><Pill tone={deleted ? "mut" : tenant.plan === "FULL" ? "ok" : "warn"}>{stateText}</Pill></dd></div>
+        {state.endDateKey && <div className="flex justify-between gap-2"><dt className="text-muted-foreground">{t("card.until")}</dt><dd>{formatDateKey(state.endDateKey, locale)}</dd></div>}
+        {isTrial && <div className="flex justify-between gap-2"><dt className="text-muted-foreground">{t("card.deletion")}</dt><dd>{tenant.deletionDueAt ? formatInstantDate(tenant.deletionDueAt, locale) : t("card.deletionNone")}</dd></div>}
+        <div className="flex justify-between gap-2"><dt className="text-muted-foreground">{t("card.source")}</dt><dd>{tenant.trialSource === "platform" ? t("card.sourcePlatform") : t("card.sourceSelf")}</dd></div>
+      </dl>
+      {isFullAdmin && isTrial && (
+        <div className="mt-3 space-y-2">
+          {actions.filter((a) => a.show).map((a) => (
+            <Link key={a.op} href={`${base}?trial=${a.op}`} scroll={false} className="block">
+              <Button variant="outline" size="sm" className={a.op === "end" || a.op === "schedule" ? "min-h-11 w-full justify-center border-destructive/40 text-destructive" : "min-h-11 w-full justify-center"}>
+                {t(`card.${a.op}`)}
+              </Button>
+            </Link>
+          ))}
+        </div>
+      )}
+
+      {activeOp && (
+        <Modal title={t(`ops.${activeOp}Title`)} closeHref={base} closeLabel={t("ops.close")}>
+          <div className="space-y-3 p-5">
+            <p className="text-sm">{t(`ops.${activeOp}Text`)}</p>
+            <TrialLifecycleForm
+              action={trialLifecycleAction.bind(null, tenant.id, activeOp)}
+              withDate={activeOp === "extend"}
+              defaultEnd={state.endDateKey && state.endDateKey >= today ? addDaysToKey(state.endDateKey, 14) : addDaysToKey(today, 14)}
+              min={today}
+              max={addDaysToKey(today, PLATFORM_TRIAL_MAX_DAYS)}
+              closeHref={base}
+              destructive={activeOp === "end" || activeOp === "schedule"}
+            />
+          </div>
+        </Modal>
+      )}
+    </div>
+  );
+}
diff --git a/src/components/trial/trial-badge.tsx b/src/components/trial/trial-badge.tsx
new file mode 100644
index 0000000..f96920c
--- /dev/null
+++ b/src/components/trial/trial-badge.tsx
@@ -0,0 +1,18 @@
+import { getLocale, getTranslations } from "next-intl/server";
+import { Pill } from "@/components/mockup-ui";
+import { formatDateKey, formatInstantDate } from "@/lib/trial/dates";
+import { computeTrialState, type TenantTrialRow } from "@/server/services/trial/state";
+
+/** L15 Testphase: plan badge(s) in the platform tenant list ("Test bis …", "abgelaufen – nur lesen", "Löschung am …"). */
+export async function TrialBadge({ tenant }: { tenant: TenantTrialRow }) {
+  const [t, locale] = await Promise.all([getTranslations("trial.platform"), getLocale()]);
+  if (tenant.trialDeletedAt) return <Pill tone="mut">{t("badgeDeleted")}</Pill>;
+  const state = computeTrialState(tenant);
+  if (!state.isTrial) return <Pill tone="ok">{t("badgeFull")}</Pill>;
+  return (
+    <span className="flex flex-wrap gap-1.5">
+      {state.expired ? <Pill tone="warn">{t("badgeExpired")}</Pill> : <Pill tone="warn">{t("badgeUntil", { date: formatDateKey(state.endDateKey!, locale) })}</Pill>}
+      {state.deletionDueAt && <Pill tone="mut">{t("badgeDeletion", { date: formatInstantDate(state.deletionDueAt, locale) })}</Pill>}
+    </span>
+  );
+}
diff --git a/src/components/trial/trial-banner.tsx b/src/components/trial/trial-banner.tsx
new file mode 100644
index 0000000..b1df9a7
--- /dev/null
+++ b/src/components/trial/trial-banner.tsx
@@ -0,0 +1,54 @@
+import Link from "next/link";
+import { getLocale, getTranslations } from "next-intl/server";
+import { Hourglass, Lock } from "lucide-react";
+import { cn } from "@/lib/utils";
+import { formatDateKey, formatInstantDate } from "@/lib/trial/dates";
+import { trialContactEmail } from "@/server/services/trial/config";
+import { getTrialState } from "@/server/services/trial/state";
+
+/**
+ * L15 Testphase: banner in the backoffice and mobile shell — countdown from 7 days before the end,
+ * read-only notice (+ deletion date, contact, export link) after expiry. Status is carried by text
+ * and icon, colour only supports it.
+ */
+export async function TrialBanner({ tenantId, variant, canExport = false }: { tenantId: string; variant: "backoffice" | "mobile"; canExport?: boolean }) {
+  const state = await getTrialState(tenantId);
+  if (!state.isTrial || (!state.expired && !state.showCountdown)) return null;
+  const [t, locale] = await Promise.all([getTranslations("trial.banner"), getLocale()]);
+  const contact = trialContactEmail();
+  const Icon = state.expired ? Lock : Hourglass;
+
+  return (
+    <div
+      role="status"
+      data-trial-banner={state.expired ? "expired" : "countdown"}
+      className={cn(
+        "flex flex-wrap items-center gap-x-3 gap-y-1 border-b px-4 py-2.5 text-[13px]",
+        state.expired ? "bg-[rgba(198,66,66,0.08)] text-foreground" : "bg-[rgba(200,121,18,0.10)] text-foreground",
+        variant === "mobile" && "text-[14px]",
+      )}
+    >
+      <Icon className={cn("size-4 shrink-0", state.expired ? "text-[var(--risk)]" : "text-[var(--warn)]")} aria-hidden />
+      <span className="font-semibold">
+        {state.expired ? t("expired") : t("endsIn", { days: Math.max(0, state.daysLeft ?? 0) })}
+      </span>
+      {!state.expired && state.endDateKey && <span>{t("endsOn", { date: formatDateKey(state.endDateKey, locale) })}</span>}
+      {state.expired && state.deletionDueAt && <span>{t("deletion", { date: formatInstantDate(state.deletionDueAt, locale) })}</span>}
+      <span className="text-muted-foreground">
+        {contact ? (
+          <>
+            {t("contact", { email: "" })}
+            <a href={`mailto:${contact}`} className="font-semibold text-[var(--ui-primary)] underline">{contact}</a>
+          </>
+        ) : (
+          t("contactGeneric")
+        )}
+      </span>
+      {state.expired && canExport && (
+        <Link href="/settings/export" className="ml-auto inline-flex min-h-11 items-center font-semibold text-[var(--ui-primary)] underline">
+          {t("export")}
+        </Link>
+      )}
+    </div>
+  );
+}
diff --git a/src/lib/nav.ts b/src/lib/nav.ts
index 59a1dd8..59607cb 100644
--- a/src/lib/nav.ts
+++ b/src/lib/nav.ts
@@ -19,6 +19,7 @@ import {
   LayoutGrid,
   MapPinned,
   Receipt,
+  Download,
   type LucideIcon,
 } from "lucide-react";
 import type { ModuleKey } from "@/lib/modules";
@@ -77,6 +78,7 @@ export const NAV_ITEMS: readonly NavItem[] = [
   { href: "/settings/email", label: "email", icon: Mail, module: "notifications", permissions: ["tenant:manage"], section: "admin" },
   { href: "/settings/audit", label: "audit", icon: History, permissions: ["audit:read"], section: "admin" },
   { href: "/settings/lotse", label: "lotse", icon: Compass, permissions: ["tenant:manage"], section: "admin" },
+  { href: "/settings/export", label: "dataExport", icon: Download, permissions: ["tenant:manage"], section: "admin" }, // L15
 ];
 
 /** Filtert die Navigation nach aktiven Modulen und Rechten der Session. */
diff --git a/src/lib/trial/dates.ts b/src/lib/trial/dates.ts
new file mode 100644
index 0000000..84e1012
--- /dev/null
+++ b/src/lib/trial/dates.ts
@@ -0,0 +1,68 @@
+/**
+ * L15 Testphase: calendar-day helpers in Europe/Berlin (client-safe, no dependencies).
+ * Date keys are `YYYY-MM-DD`. A trial "until 30.09." ends at the START of 01.10. in Berlin
+ * (exclusive end instant, stored in `Tenant.trialEndsAt`).
+ */
+import { dayWindow, localDateKey } from "@/lib/reports/dates";
+
+export const TRIAL_TZ = "Europe/Berlin";
+const DATE_KEY = /^\d{4}-\d{2}-\d{2}$/;
+
+export function isDateKey(value: unknown): value is string {
+  if (typeof value !== "string" || !DATE_KEY.test(value)) return false;
+  const [y, m, d] = value.split("-").map(Number);
+  const dt = new Date(Date.UTC(y, m - 1, d));
+  return dt.getUTCFullYear() === y && dt.getUTCMonth() === m - 1 && dt.getUTCDate() === d;
+}
+
+/** Today's date key in Berlin. */
+export function todayKey(now: Date = new Date()): string {
+  return localDateKey(now, TRIAL_TZ);
+}
+
+export function addDaysToKey(key: string, days: number): string {
+  const [y, m, d] = key.split("-").map(Number);
+  return new Date(Date.UTC(y, m - 1, d + days)).toISOString().slice(0, 10);
+}
+
+/** Whole calendar days from `from` to `to` (negative when `to` lies before `from`). */
+export function diffDayKeys(from: string, to: string): number {
+  const [y1, m1, d1] = from.split("-").map(Number);
+  const [y2, m2, d2] = to.split("-").map(Number);
+  return Math.round((Date.UTC(y2, m2 - 1, d2) - Date.UTC(y1, m1 - 1, d1)) / 86_400_000);
+}
+
+/** Exclusive end instant of the chosen last trial day (start of the next day in Berlin). */
+export function trialEndInstant(endDateKey: string): Date {
+  return dayWindow(endDateKey, TRIAL_TZ).end;
+}
+
+/** Last trial day (date key) of a stored exclusive end instant. */
+export function trialEndDateKey(endsAt: Date): string {
+  return localDateKey(new Date(endsAt.getTime() - 1), TRIAL_TZ);
+}
+
+/** `TT.MM.JJJJ` (de) or `DD/MM/YYYY` (en) of a date key. */
+export function formatDateKey(key: string, locale: string = "de"): string {
+  const [y, m, d] = key.split("-");
+  return locale === "en" ? `${d}/${m}/${y}` : `${d}.${m}.${y}`;
+}
+
+/** Formatted Berlin calendar date of an instant. */
+export function formatInstantDate(instant: Date, locale: string = "de"): string {
+  return formatDateKey(localDateKey(instant, TRIAL_TZ), locale);
+}
+
+export type TrialBounds = { today: string; min: string; max: string; defaultEnd: string; maxDays: number };
+
+/** Allowed end dates of the self-service wizard: tomorrow … today + maxDays (default today + 14). */
+export function trialBounds(now: Date, maxDays: number, defaultDays = 14): TrialBounds {
+  const today = todayKey(now);
+  return {
+    today,
+    min: addDaysToKey(today, 1),
+    max: addDaysToKey(today, maxDays),
+    defaultEnd: addDaysToKey(today, Math.min(defaultDays, maxDays)),
+    maxDays,
+  };
+}
diff --git a/src/lib/trial/signup.ts b/src/lib/trial/signup.ts
new file mode 100644
index 0000000..0270170
--- /dev/null
+++ b/src/lib/trial/signup.ts
@@ -0,0 +1,107 @@
+/**
+ * L15 Testphase: wizard data model + validation (client-safe — used by the wizard for instant
+ * feedback AND by the server actions/services as the authoritative check).
+ * Errors are stable codes; the UI resolves them via messages `trial.errors.<code>`.
+ */
+import { z } from "zod";
+import { DEFAULT_PASSWORD_POLICY, validatePassword } from "@/lib/password-policy";
+import { MODULE_KEYS } from "@/lib/modules";
+import { isDateKey, type TrialBounds } from "@/lib/trial/dates";
+
+/** Sector presets (labels in messages `trial.sectors.<key>`); "other" = free text. */
+export const TRIAL_SECTOR_KEYS = ["shk", "electrical", "roofing", "carpentry", "painting", "facility", "construction", "metal", "other"] as const;
+export const TRIAL_COMPANY_SIZES = ["1-5", "6-20", "21-50", "51-200", "200+"] as const;
+
+export const TRIAL_STEPS = ["company", "account", "period", "setup", "summary"] as const;
+export type TrialStep = (typeof TRIAL_STEPS)[number];
+
+export type TrialSignupValues = {
+  companyName: string;
+  /** Stored sector text (preset label or free text). */
+  sector: string;
+  companySize: string;
+  adminName: string;
+  email: string;
+  password: string;
+  trialEndDate: string;
+  sampleData: boolean;
+  modules: string[];
+  acceptTerms: boolean;
+  acceptPrivacy: boolean;
+  /** Honeypot — must stay empty (hidden from people, filled by naive bots). */
+  website: string;
+};
+
+/** `_form` = error not tied to one field (malformed request, rate limit). */
+export type FieldErrors = Partial<Record<keyof TrialSignupValues | "_form", string>>;
+
+/** Shape/coercion of untrusted input (server side). Content rules follow in `validateTrialStep`. */
+export const trialSignupInputSchema = z.object({
+  companyName: z.string().max(500).default(""),
+  sector: z.string().max(500).default(""),
+  companySize: z.string().max(20).default(""),
+  adminName: z.string().max(500).default(""),
+  email: z.string().max(500).default(""),
+  password: z.string().max(500).default(""),
+  trialEndDate: z.string().max(20).default(""),
+  sampleData: z.coerce.boolean().default(true),
+  modules: z.array(z.string().max(40)).max(50).default([...MODULE_KEYS]),
+  acceptTerms: z.coerce.boolean().default(false),
+  acceptPrivacy: z.coerce.boolean().default(false),
+  website: z.string().max(500).default(""),
+});
+
+const EMAIL = /^[^\s@]+@[^\s@]+\.[^\s@]{2,}$/;
+
+/** Normalised values (trimmed, lower-case e-mail, known modules only); null for malformed input. */
+export function normalizeTrialValues(input: unknown): TrialSignupValues | null {
+  const parsed = trialSignupInputSchema.safeParse(input ?? {});
+  if (!parsed.success) return null;
+  const v = parsed.data;
+  return {
+    ...v,
+    companyName: v.companyName.trim(),
+    sector: v.sector.trim(),
+    companySize: v.companySize.trim(),
+    adminName: v.adminName.trim(),
+    email: v.email.trim().toLowerCase(),
+    trialEndDate: v.trialEndDate.trim(),
+    modules: [...new Set(v.modules.filter((m) => (MODULE_KEYS as readonly string[]).includes(m)))],
+  };
+}
+
+export function validateTrialStep(step: TrialStep, v: TrialSignupValues, bounds: TrialBounds): FieldErrors {
+  const e: FieldErrors = {};
+  switch (step) {
+    case "company":
+      if (v.companyName.length < 2) e.companyName = "company_required";
+      else if (v.companyName.length > 120) e.companyName = "too_long";
+      if (v.sector.length > 80) e.sector = "too_long";
+      if (v.companySize && !(TRIAL_COMPANY_SIZES as readonly string[]).includes(v.companySize)) e.companySize = "invalid_choice";
+      break;
+    case "account":
+      if (v.adminName.length < 2) e.adminName = "name_required";
+      else if (v.adminName.length > 120) e.adminName = "too_long";
+      if (!EMAIL.test(v.email) || v.email.length > 200) e.email = "email_invalid";
+      if (validatePassword(v.password, DEFAULT_PASSWORD_POLICY).length > 0 || v.password.length > 200) e.password = "password_policy";
+      break;
+    case "period":
+      if (!isDateKey(v.trialEndDate)) e.trialEndDate = "date_invalid";
+      else if (v.trialEndDate < bounds.min) e.trialEndDate = "date_too_early";
+      else if (v.trialEndDate > bounds.max) e.trialEndDate = "date_too_late";
+      break;
+    case "setup":
+      if (v.modules.length === 0) e.modules = "modules_required";
+      break;
+    case "summary":
+      if (!v.acceptTerms) e.acceptTerms = "terms_required";
+      if (!v.acceptPrivacy) e.acceptPrivacy = "privacy_required";
+      break;
+  }
+  return e;
+}
+
+/** All steps at once (final submit). */
+export function validateTrialSignup(v: TrialSignupValues, bounds: TrialBounds): FieldErrors {
+  return TRIAL_STEPS.reduce<FieldErrors>((acc, step) => ({ ...acc, ...validateTrialStep(step, v, bounds) }), {});
+}
diff --git a/src/proxy.ts b/src/proxy.ts
index 4fbe6f6..7b061ea 100644
--- a/src/proxy.ts
+++ b/src/proxy.ts
@@ -9,7 +9,9 @@ import { NextResponse, type NextRequest } from "next/server";
 // SEC2: die Wiederherstellungs-Abläufe müssen ohne Session erreichbar sein —
 // der Nutzer ist gerade ausgesperrt. Ihre Absicherung sind Rate-Limit,
 // Enumeration-Neutralität und single-use-Tokens, nicht dieses Gate.
-const PUBLIC_PATHS = ["/login", "/api/auth", "/forgot-password", "/reset", "/invite", "/verify-email", "/platform/login", "/api/platform-auth"];
+// L15 Testphase: `/testen` (Wizard, Bestätigung, Nutzungsbedingungen, Datenschutz) ist öffentlich —
+// abgesichert über Rate-Limit je IP/E-Mail, Honeypot, Double-Opt-in und Enumeration-Neutralität.
+const PUBLIC_PATHS = ["/login", "/api/auth", "/forgot-password", "/reset", "/invite", "/verify-email", "/platform/login", "/api/platform-auth", "/testen"];
 
 // Plattform-Bereich (getrennte Session/Login): diese Routen werden über das
 // Plattform-Cookie gegatet und leiten anonyme Besucher auf /platform/login —
diff --git a/src/server/action-guard.ts b/src/server/action-guard.ts
index 1f48cd4..b0797fb 100644
--- a/src/server/action-guard.ts
+++ b/src/server/action-guard.ts
@@ -4,6 +4,7 @@ import { ForbiddenError, type Permission } from "@/server/rbac";
 import { assertModuleEnabled } from "@/server/modules";
 import { writeAuditLog } from "@/server/audit";
 import { isTokenStillValid } from "@/server/sessions";
+import { assertTenantWritable } from "@/server/services/trial/state";
 
 /**
  * Einheitlicher Einstieg für mutierende Server-Actions eines gegateten Moduls (§3.4).
@@ -83,6 +84,9 @@ export function moduleGuard(moduleKey: string) {
     }
 
     await assertModuleEnabled(session, moduleKey);
+    // L15 Testphase: abgelaufene Testmandanten sind nur lesbar — zentrale Schreibsperre
+    // (wirft ServiceError "blocked"/"trial_expired").
+    await assertTenantWritable(session.user.tenantId);
     // `permissions` = DB-authoritative effective set; domain services derive their
     // scope decisions from it (src/server/services/context.ts#ctxFromGuard).
     return { session, db, permissions: effective as ReadonlySet<string> };
diff --git a/src/server/actions/lotse-settings.ts b/src/server/actions/lotse-settings.ts
index 896f8e1..3f82250 100644
--- a/src/server/actions/lotse-settings.ts
+++ b/src/server/actions/lotse-settings.ts
@@ -6,6 +6,7 @@ import { requireApiContext } from "@/server/api/context";
 import { requireSession } from "@/server/auth";
 import { requirePermission } from "@/server/rbac";
 import { updateLotseSettings } from "@/server/services/lotse/settings";
+import { assertTenantWritable } from "@/server/services/trial/state";
 
 /**
  * /settings/lotse: switch the Lotse module on/off and set the address form (lane L9).
@@ -19,6 +20,7 @@ export async function saveLotseSettings(fd: FormData): Promise<void> {
   try {
     requirePermission(session, "tenant:manage"); // fast JWT check; requireApiContext re-checks against the DB
     const ctx = await requireApiContext(null, "tenant:manage");
+    await assertTenantWritable(ctx.tenantId); // L15: expired trial → settings read-only
     // L10b: empty = platform default (null); invalid numbers are rejected by the service schema
     const rawLimit = String(fd.get("monthlyTokenLimit") ?? "").trim();
     await updateLotseSettings(ctx, {
diff --git a/src/server/actions/tenant-settings.ts b/src/server/actions/tenant-settings.ts
index f452479..169bc24 100644
--- a/src/server/actions/tenant-settings.ts
+++ b/src/server/actions/tenant-settings.ts
@@ -6,6 +6,7 @@ import { requireSession } from "@/server/auth";
 import { dbForTenant } from "@/server/db";
 import { requirePermission } from "@/server/rbac";
 import { writeAuditLog } from "@/server/audit";
+import { assertTenantWritable } from "@/server/services/trial/state";
 
 const str = (v: FormDataEntryValue | null) => (v ? String(v).trim() : "");
 
@@ -14,6 +15,7 @@ export async function updateTenantSettings(formData: FormData) {
   const session = await requireSession();
   requirePermission(session, "tenant:manage");
   const tenantId = session.user.tenantId;
+  await assertTenantWritable(tenantId); // L15: expired trial → read-only
   const db = dbForTenant(tenantId);
 
   const orgName = z.string().trim().min(1).parse(formData.get("orgName"));
diff --git a/src/server/actions/tenant-users.ts b/src/server/actions/tenant-users.ts
index b2faff1..d3f27c2 100644
--- a/src/server/actions/tenant-users.ts
+++ b/src/server/actions/tenant-users.ts
@@ -11,6 +11,7 @@ import { resolvePasswordPolicy } from "@/lib/password-policy";
 import { issueToken } from "@/server/auth-token";
 import { sendUserInvitationMail } from "@/server/auth-selfservice";
 import { writeAuditLog } from "@/server/audit";
+import { assertTenantWritable, isTrialExpiredError, TRIAL_READ_ONLY_MESSAGE } from "@/server/services/trial/state";
 
 /**
  * Benutzer- & Rollenverwaltung durch den Mandanten-Admin (Paket B). EXEMPT vom
@@ -38,6 +39,7 @@ export type EditUserState =
 async function ctx(permission: "user:manage" | "role:manage") {
   const session = await requireSession();
   requirePermission(session, permission);
+  await assertTenantWritable(session.user.tenantId); // L15: expired trial → user administration read-only
   return { session, tenantId: session.user.tenantId, db: dbForTenant(session.user.tenantId) };
 }
 
@@ -48,6 +50,7 @@ async function ctx(permission: "user:manage" | "role:manage") {
  * ("Aktion konnte nicht abgeschlossen werden" + Formularverlust).
  */
 function actionError(err: unknown): string {
+  if (isTrialExpiredError(err)) return TRIAL_READ_ONLY_MESSAGE;
   const msg = err instanceof Error ? err.message : String(err);
   return msg || "Die Aktion konnte nicht ausgeführt werden.";
 }
diff --git a/src/server/actions/trial-platform.ts b/src/server/actions/trial-platform.ts
new file mode 100644
index 0000000..f5784ab
--- /dev/null
+++ b/src/server/actions/trial-platform.ts
@@ -0,0 +1,73 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { redirect } from "next/navigation";
+import { requirePlatformFullAdmin } from "@/server/platform-auth";
+import { ServiceError } from "@/server/services/context";
+import {
+  cancelTrialDeletion,
+  changeTrialEndDate,
+  convertTenantToFull,
+  createPlatformTrialTenant,
+  endTrialNow,
+  scheduleTrialDeletion,
+} from "@/server/services/trial/admin";
+
+/**
+ * L15 Testphase — platform admin: wizard "Testmandant anlegen" and lifecycle actions.
+ * EXEMPT from module gating; authorisation via the separate platform session (full admins only).
+ * The services re-check the actor against the PlatformAdmin store and write the audit.
+ */
+
+export type PlatformTrialState = { status: "idle" } | { status: "error"; code: string };
+
+function errorCode(err: unknown): string {
+  if (err instanceof ServiceError) return err.message;
+  if (err && typeof err === "object" && "issues" in err) return "invalid_input";
+  return "failed";
+}
+
+export async function createTrialTenantAction(_prev: PlatformTrialState, fd: FormData): Promise<PlatformTrialState> {
+  const { admin } = await requirePlatformFullAdmin();
+  let target: string;
+  try {
+    const result = await createPlatformTrialTenant(
+      { platformAdminId: admin.id },
+      {
+        companyName: String(fd.get("companyName") ?? ""),
+        sector: String(fd.get("sector") ?? ""),
+        adminName: String(fd.get("adminName") ?? ""),
+        adminEmail: String(fd.get("adminEmail") ?? ""),
+        endDate: String(fd.get("endDate") ?? ""),
+        sampleData: fd.get("sampleData") === "on",
+      },
+    );
+    target = `/admin/${result.tenantId}?trial=created${result.invited ? "&invited=1" : ""}`;
+  } catch (err) {
+    return { status: "error", code: errorCode(err) };
+  }
+  revalidatePath("/admin");
+  redirect(target);
+}
+
+const OPS = ["extend", "convert", "end", "schedule", "cancel"] as const;
+
+/** Lifecycle actions; every destructive/relevant change requires the confirmation checkbox. */
+export async function trialLifecycleAction(tenantId: string, op: string, _prev: PlatformTrialState, fd: FormData): Promise<PlatformTrialState> {
+  const { admin } = await requirePlatformFullAdmin();
+  const actor = { platformAdminId: admin.id };
+  if (!(OPS as readonly string[]).includes(op)) return { status: "error", code: "invalid_input" };
+  if (fd.get("confirm") !== "on") return { status: "error", code: "confirm_required" };
+  try {
+    if (op === "extend") await changeTrialEndDate(actor, tenantId, String(fd.get("endDate") ?? ""));
+    else if (op === "convert") await convertTenantToFull(actor, tenantId);
+    else if (op === "end") await endTrialNow(actor, tenantId);
+    else if (op === "schedule") await scheduleTrialDeletion(actor, tenantId);
+    else await cancelTrialDeletion(actor, tenantId);
+  } catch (err) {
+    return { status: "error", code: errorCode(err) };
+  }
+  revalidatePath("/admin");
+  revalidatePath(`/admin/${tenantId}`);
+  redirect(`/admin/${tenantId}?trialDone=${op}`);
+}
diff --git a/src/server/actions/trial-signup.ts b/src/server/actions/trial-signup.ts
new file mode 100644
index 0000000..ed42d7f
--- /dev/null
+++ b/src/server/actions/trial-signup.ts
@@ -0,0 +1,63 @@
+"use server";
+
+import { redirect } from "next/navigation";
+import { AuthError } from "next-auth";
+import { getLocale } from "next-intl/server";
+import { signIn } from "@/server/auth";
+import { clientIp } from "@/server/auth-selfservice";
+import { signLoginTicket } from "@/server/login-ticket";
+import { enforceTrialRateLimit } from "@/server/services/trial/abuse";
+import { checkTrialStep, confirmTrialSignup, submitTrialSignup } from "@/server/services/trial/signup";
+import type { FieldErrors } from "@/lib/trial/signup";
+
+/**
+ * L15 Testphase — public self-service signup (no session). Registered as PUBLIC in
+ * scripts/check-module-guards.ts: every action checks the rate limit (per IP, per e-mail).
+ * Business logic in src/server/services/trial/signup.ts.
+ */
+
+export type TrialSubmitState = { status: "sent" } | { status: "invalid"; errors: FieldErrors };
+export type TrialConfirmState = { status: "idle" } | { status: "invalid" } | { status: "expired" } | { status: "rate_limited" };
+
+async function localeOrDefault(): Promise<string> {
+  try {
+    return await getLocale();
+  } catch {
+    return "de";
+  }
+}
+
+/** Server-side validation of one wizard step (Weiter). Writes nothing. */
+export async function checkTrialStepAction(step: string, values: unknown): Promise<FieldErrors> {
+  const limit = enforceTrialRateLimit("trialStepCheck", { ip: await clientIp() });
+  if (!limit.allowed) return { _form: "rate_limited" };
+  return checkTrialStep(step, values);
+}
+
+/** Final submit: validates everything again, creates the pending signup and sends the confirmation mail. */
+export async function submitTrialSignupAction(values: unknown): Promise<TrialSubmitState> {
+  const ip = await clientIp();
+  const email = values && typeof values === "object" && typeof (values as { email?: unknown }).email === "string" ? (values as { email: string }).email : null;
+  const limit = enforceTrialRateLimit("trialSignup", { ip, email });
+  if (!limit.allowed) return { status: "invalid", errors: { _form: "rate_limited" } };
+  return submitTrialSignup(values, { ip, locale: await localeOrDefault() });
+}
+
+/** Confirmation (POST from /testen/bestaetigen — mail scanners opening the GET link consume nothing). */
+export async function confirmTrialSignupAction(_prev: TrialConfirmState, fd: FormData): Promise<TrialConfirmState> {
+  const limit = enforceTrialRateLimit("trialConfirm", { ip: await clientIp() });
+  if (!limit.allowed) return { status: "rate_limited" };
+  const token = String(fd.get("token") ?? "");
+  const result = await confirmTrialSignup(token);
+  if (result.status !== "ok") return { status: result.status };
+
+  // Directly signed in via the existing login finalisation (login-ticket provider). If that is not
+  // possible (e.g. MFA policy), the regular login page takes over.
+  try {
+    await signIn("login-ticket", { ticket: signLoginTicket(result.identityId, result.tenantSlug), redirectTo: "/dashboard?welcome=1" });
+  } catch (err) {
+    if (err instanceof AuthError) redirect("/login?trial=ready");
+    throw err; // NEXT_REDIRECT of a successful sign-in
+  }
+  return { status: "idle" };
+}
diff --git a/src/server/actions/trial-tenant.ts b/src/server/actions/trial-tenant.ts
new file mode 100644
index 0000000..1ab0fa1
--- /dev/null
+++ b/src/server/actions/trial-tenant.ts
@@ -0,0 +1,47 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { redirect } from "next/navigation";
+import { requireApiContext } from "@/server/api/context";
+import { requireSession } from "@/server/auth";
+import { requirePermission } from "@/server/rbac";
+import { ServiceError } from "@/server/services/context";
+import { requestTenantExport } from "@/server/services/trial/export";
+import { setOnboardingHidden, setOnboardingItem } from "@/server/services/trial/onboarding";
+
+/**
+ * L15 Testphase — tenant side: data export (allowed in the read-only state, therefore NOT behind
+ * moduleGuard) and the "Erste Schritte" checklist (writes → trial write lock in the service).
+ * Auth: requireSession + requirePermission (JWT, fast) + requireApiContext (DB-authoritative).
+ * Registered as EXEMPT in scripts/check-module-guards.ts.
+ */
+
+async function adminCtx() {
+  const session = await requireSession();
+  requirePermission(session, "tenant:manage");
+  return requireApiContext(null, "tenant:manage");
+}
+
+export async function requestExportAction(): Promise<void> {
+  let target = "/settings/export?requested=1";
+  try {
+    await requestTenantExport(await adminCtx());
+  } catch (err) {
+    console.error("[actions/trial-tenant] export:", (err as Error).message);
+    target = `/settings/export?error=${err instanceof ServiceError ? encodeURIComponent(err.message) : "failed"}`;
+  }
+  revalidatePath("/settings/export");
+  redirect(target);
+}
+
+export async function toggleOnboardingItemAction(fd: FormData): Promise<void> {
+  const ctx = await adminCtx();
+  await setOnboardingItem(ctx, String(fd.get("key") ?? ""), fd.get("done") === "1");
+  revalidatePath("/dashboard");
+}
+
+export async function hideOnboardingAction(): Promise<void> {
+  const ctx = await adminCtx();
+  await setOnboardingHidden(ctx, true);
+  revalidatePath("/dashboard");
+}
diff --git a/src/server/api/context.ts b/src/server/api/context.ts
index ae852fd..d087524 100644
--- a/src/server/api/context.ts
+++ b/src/server/api/context.ts
@@ -6,7 +6,8 @@ import { assertModuleEnabled, requireModule } from "@/server/modules";
 import type { Permission } from "@/server/rbac";
 import type { ModuleKey } from "@/lib/modules";
 import type { ServiceCtx } from "@/server/services/context";
-import { ApiError } from "@/server/api/respond";
+import { ApiError, isMutatingApiRequest } from "@/server/api/respond";
+import { assertTenantWritable } from "@/server/services/trial/state";
 import { consumeRateLimit } from "@/server/rate-limit";
 
 // assertSameOrigin lives in respond.ts (withApi applies it to every mutation); re-exported for
@@ -63,10 +64,20 @@ export async function requireApiContext(moduleKey: ModuleKey | null, ...permissi
   }
   if (moduleKey) await assertModuleEnabled(session, moduleKey); // throws ModuleDisabledError → 403
   if (moduleKey) enforceApiRateLimit(session.user.id, moduleKey);
+  await assertApiWriteAllowed(tenantId);
 
   return { db, tenantId, userId: session.user.id, permissions: effective };
 }
 
+/**
+ * L15 Testphase: non-GET /api/v1 requests (withApi) of an expired trial tenant → `blocked
+ * trial_expired` (422). GET requests (reads, PDFs, downloads, export) are never blocked. Route
+ * handlers outside `withApi` that write (backoffice upload) call `assertTenantWritable` themselves.
+ */
+export async function assertApiWriteAllowed(tenantId: string): Promise<void> {
+  if (isMutatingApiRequest()) await assertTenantWritable(tenantId);
+}
+
 /**
  * Per-user request budget for /api/v1 (in-memory, per app instance — see rate-limit.ts).
  * Field endpoints (sync outbox, uploads, offline pre-download, document cache) get the generous
diff --git a/src/server/api/respond.ts b/src/server/api/respond.ts
index e65f69e..49a2ff7 100644
--- a/src/server/api/respond.ts
+++ b/src/server/api/respond.ts
@@ -1,3 +1,4 @@
+import { AsyncLocalStorage } from "node:async_hooks";
 import { ZodError } from "zod";
 import { ServiceError } from "@/server/services/context";
 import { ForbiddenError } from "@/server/rbac";
@@ -96,6 +97,22 @@ export function parsePagination(url: URL | string, defaults = { pageSize: 25 }):
 
 const SAFE_METHODS = new Set(["GET", "HEAD", "OPTIONS"]);
 
+/**
+ * L15 Testphase: HTTP method of the /api/v1 request currently handled by `withApi` (async context).
+ * `requireApiContext` uses it to apply the trial write lock to every non-safe request centrally;
+ * outside `withApi` (server actions, /files downloads) the method is unknown → `null`.
+ */
+const apiRequest = new AsyncLocalStorage<{ method: string }>();
+
+export function currentApiMethod(): string | null {
+  return apiRequest.getStore()?.method ?? null;
+}
+
+export function isMutatingApiRequest(): boolean {
+  const method = currentApiMethod();
+  return method !== null && !SAFE_METHODS.has(method);
+}
+
 /**
  * CSRF defense for cookie-authenticated, state-changing route handlers: reject requests whose
  * Origin (or Sec-Fetch-Site) shows a foreign site. Server actions have this built in.
@@ -125,8 +142,9 @@ export function assertSameOrigin(req: Request): void {
 export function withApi<A extends [Request, ...unknown[]]>(handler: (...args: A) => Promise<Response>) {
   return async (...args: A): Promise<Response> => {
     try {
-      if (!SAFE_METHODS.has(args[0].method.toUpperCase())) assertSameOrigin(args[0]);
-      return await handler(...args);
+      const method = args[0].method.toUpperCase();
+      if (!SAFE_METHODS.has(method)) assertSameOrigin(args[0]);
+      return await apiRequest.run({ method }, () => handler(...args));
     } catch (err) {
       return toErrorResponse(err);
     }
diff --git a/src/server/backup/topology.ts b/src/server/backup/topology.ts
index 382cba3..6cc01f0 100644
--- a/src/server/backup/topology.ts
+++ b/src/server/backup/topology.ts
@@ -75,6 +75,8 @@ export const TENANT_MODELS: readonly string[] = [
   // L14 Abrechnungsübersicht
   "WorkOrderMilestone",
   "BillingRecord",
+  // L15 Testphase: Datenexport des Mandanten
+  "TenantExport",
 ];
 
 /**
diff --git a/src/server/db.ts b/src/server/db.ts
index 111ecaf..22cb66f 100644
--- a/src/server/db.ts
+++ b/src/server/db.ts
@@ -126,6 +126,8 @@ const TENANT_MODELS = new Set<string>([
   // L14 Abrechnungsübersicht
   "WorkOrderMilestone",
   "BillingRecord",
+  // L15 Testphase: Datenexport des Mandanten
+  "TenantExport",
   // WebAuthnCredential/Identity sind identitäts-global (kein tenant_id) → NICHT hier.
   // Craftvia-Fachmodelle hier ergänzen — UND in src/server/backup/topology.ts
   // (TENANT_MODELS) sowie per `SELECT enable_tenant_rls('<table>')` in der Migration
diff --git a/src/server/dsgvo/pii-fields.ts b/src/server/dsgvo/pii-fields.ts
index 1483356..2b90dc9 100644
--- a/src/server/dsgvo/pii-fields.ts
+++ b/src/server/dsgvo/pii-fields.ts
@@ -55,6 +55,8 @@ export const PII_REFERENCE_FIELDS: readonly PiiReference[] = [
   { model: "WorkOrderMilestone", field: "rejectedById" },
   { model: "BillingRecord", field: "billedById" },
   { model: "BillingRecord", field: "voidedById" },
+  // L15 Testphase: Datenexport
+  { model: "TenantExport", field: "requestedById" },
   // Free-text person data of END CUSTOMERS (Customer/Contact/Site/Signature.signerName) is
   // tenant business data under data processing — not part of the employee subject export.
 ];
diff --git a/src/server/jobs/processors/index.ts b/src/server/jobs/processors/index.ts
index e9eb334..6317ec6 100644
--- a/src/server/jobs/processors/index.ts
+++ b/src/server/jobs/processors/index.ts
@@ -16,6 +16,8 @@ export const PROCESSORS: Partial<Record<JobQueueName, () => Promise<JobProcessor
   "geocode-site": () => import("./geocode-site").then((m) => m.process), // L13: geocoding of sites (OSM Nominatim)
   "planning-watch": () => import("./planning-watch").then((m) => m.process), // L13: delay/overrun/freed-capacity alerts (every 5 min)
   "billing-pdf": () => import(/* turbopackIgnore: true */ "./billing-pdf").then((m) => m.process), // L14: worker-only billing sheet PDF (react-dom/server + Chromium)
+  "trial-lifecycle": () => import("./trial-lifecycle").then((m) => m.process), // L15: daily trial reminders/expiry/deletion
+  "tenant-export": () => import("./tenant-export").then((m) => m.process), // L15: tenant data export ZIP
 };
 
 /** Inline fallback when no Redis is available (dev/demo). */
diff --git a/src/server/jobs/processors/tenant-export.ts b/src/server/jobs/processors/tenant-export.ts
new file mode 100644
index 0000000..9507637
--- /dev/null
+++ b/src/server/jobs/processors/tenant-export.ts
@@ -0,0 +1,7 @@
+import type { JobPayload } from "../queues";
+import { buildTenantExport } from "@/server/services/trial/export";
+
+/** L15 Testphase: builds the data export ZIP of one tenant (entityId = TenantExport.id). */
+export async function process(payload: JobPayload): Promise<void> {
+  await buildTenantExport(payload.tenantId, payload.entityId);
+}
diff --git a/src/server/jobs/processors/trial-lifecycle.ts b/src/server/jobs/processors/trial-lifecycle.ts
new file mode 100644
index 0000000..16ae64b
--- /dev/null
+++ b/src/server/jobs/processors/trial-lifecycle.ts
@@ -0,0 +1,11 @@
+import type { JobPayload } from "../queues";
+import { runTrialLifecycle } from "@/server/services/trial/lifecycle";
+
+/** L15 Testphase: daily lifecycle run over all trial tenants (payload tenantId "*"). */
+export async function process(_payload: JobPayload): Promise<void> {
+  void _payload;
+  const s = await runTrialLifecycle();
+  console.info(
+    `[trial-lifecycle] checked ${s.checked}, reminders ${s.reminders}, expired ${s.expiredNotices}, deletion notices ${s.deletionNotices}, deleted ${s.deleted.length}, purged signups ${s.purgedSignups}`,
+  );
+}
diff --git a/src/server/jobs/queues.ts b/src/server/jobs/queues.ts
index 97d9493..8194c87 100644
--- a/src/server/jobs/queues.ts
+++ b/src/server/jobs/queues.ts
@@ -16,6 +16,8 @@ export const JOB_QUEUES = {
   geocodeSite: "geocode-site", // L13 Planung: site address → coordinates (OSM Nominatim, 1 req/s)
   planningWatch: "planning-watch", // L13 Planung: delay/overrun/freed-capacity alerts every 5 min
   billingPdf: "billing-pdf", // L14 Abrechnungsblatt
+  trialLifecycle: "trial-lifecycle", // L15 Testphase: daily reminders/expiry/deletion
+  tenantExport: "tenant-export", // L15 Testphase: tenant data export (ZIP)
 } as const;
 
 export type JobQueueName = (typeof JOB_QUEUES)[keyof typeof JOB_QUEUES];
@@ -111,6 +113,17 @@ export async function scheduleRecurringJobs(connection: Redis): Promise<void> {
   } finally {
     await watch.close();
   }
+  // L15 Testphase: trial lifecycle once a day (all trial tenants; idempotent per tenant/notice)
+  const trial = new Queue<JobPayload>(JOB_QUEUES.trialLifecycle, { connection });
+  try {
+    await trial.upsertJobScheduler(
+      "trial-lifecycle-daily",
+      { every: 24 * 60 * 60 * 1000 },
+      { name: JOB_QUEUES.trialLifecycle, data: { tenantId: "*", entityId: "lifecycle" }, opts: { removeOnComplete: { count: 30 }, removeOnFail: { count: 30 } } },
+    );
+  } finally {
+    await trial.close();
+  }
 }
 
 export async function closeJobQueues(): Promise<void> {
diff --git a/src/server/mail/templates.ts b/src/server/mail/templates.ts
index 28f7383..72922f0 100644
--- a/src/server/mail/templates.ts
+++ b/src/server/mail/templates.ts
@@ -66,6 +66,12 @@ export type TemplateVars = {
   craftvia_report_customer: {
     customerName: string; tenantName: string; reportTitle: string; reportDate: string; message?: string;
   };
+  // ---- L15 Testphase (Transaktions-/Pflichtmails, nicht abbestellbar)
+  trial_confirm: { name: string; companyName: string; trialEnd: string; actionUrl: string; expires: string };
+  trial_existing_account: { name: string; loginUrl: string; resetUrl: string };
+  trial_reminder: { name: string; tenantName: string; daysLeft: number; endDate: string; actionUrl: string; contact?: string };
+  trial_expired: { name: string; tenantName: string; endDate: string; deletionDate?: string; exportUrl: string; contact?: string };
+  trial_deletion_notice: { name: string; tenantName: string; deletionDate: string; exportUrl: string; contact?: string };
 };
 
 /** Why the recipient gets a Craftvia notification — controls the footer line. */
@@ -97,6 +103,9 @@ export const CRAFTVIA_TEMPLATE_KEYS = [
 /** Customer-facing Craftvia mails (lane L11) — separate list, recipients are external customers. */
 export const CUSTOMER_TEMPLATE_KEYS = ["craftvia_report_customer"] as const satisfies readonly TemplateKey[];
 
+/** L15 Testphase: Anmeldung (Double-Opt-in), Hinweis bei bestehendem Konto, Erinnerungen, Ablauf, Löschung. */
+export const TRIAL_TEMPLATE_KEYS = ["trial_confirm", "trial_existing_account", "trial_reminder", "trial_expired", "trial_deletion_notice"] as const satisfies readonly TemplateKey[];
+
 /** Abmelde-/Präferenzhinweis — nur für Benachrichtigungen, nie für Transaktionsmails. */
 const FOOTER_NOTE: Record<Locale, string> = {
   de: "Sie erhalten diese Benachrichtigung aufgrund Ihrer Rolle in Ihrem Betrieb. Die Einstellungen dazu finden Sie in Ihrem Profil.",
@@ -307,6 +316,130 @@ const customerEn: { [K in CustomerKey]: Builder<K> } = {
   }),
 };
 
+// ---- L15 Testphase ----
+type TrialKey = (typeof TRIAL_TEMPLATE_KEYS)[number];
+
+const contactDe = (c?: string) => (c ? `Fragen oder Wunsch nach der Vollversion? Schreiben Sie uns: ${c}` : "Fragen oder Wunsch nach der Vollversion? Antworten Sie einfach auf diese E-Mail.");
+const contactEn = (c?: string) => (c ? `Questions or ready for the full version? Write to us: ${c}` : "Questions or ready for the full version? Simply reply to this e-mail.");
+const daysDe = (n: number) => (n <= 0 ? "heute" : n === 1 ? "morgen" : `in ${n} Tagen`);
+const daysEn = (n: number) => (n <= 0 ? "today" : n === 1 ? "tomorrow" : `in ${n} days`);
+
+const trialDe: { [K in TrialKey]: Builder<K> } = {
+  trial_confirm: (v) => ({
+    subject: `${BRAND.name}: Testphase bestätigen`,
+    heading: "Testphase bestätigen",
+    paragraphs: [
+      greetDe(v.name),
+      `Sie möchten ${BRAND.name} für „${oneLine(v.companyName)}" testen. Ihre Testphase läuft bis ${v.trialEnd}.`,
+      "Bestätigen Sie Ihre E-Mail-Adresse – danach richten wir Ihren Zugang sofort ein.",
+      "Haben Sie das nicht angefordert, ignorieren Sie diese E-Mail. Es wird dann nichts angelegt.",
+    ],
+    action: { label: "Testphase starten", url: v.actionUrl },
+    note: `Der Link ist bis ${v.expires} gültig und kann nur einmal verwendet werden.`,
+  }),
+  trial_existing_account: (v) => ({
+    subject: `${BRAND.name}: Sie haben bereits einen Zugang`,
+    heading: "Sie haben bereits einen Zugang",
+    paragraphs: [
+      greetDe(v.name),
+      `für diese E-Mail-Adresse besteht bereits ein Zugang zu ${BRAND.name}. Eine weitere Testphase mit derselben Adresse ist nicht möglich.`,
+      "Melden Sie sich mit Ihrem bestehenden Zugang an. Passwort vergessen? Dann setzen Sie es über den zweiten Link zurück.",
+      "Haben Sie das nicht angefordert, ignorieren Sie diese E-Mail.",
+    ],
+    action: { label: "Zur Anmeldung", url: v.loginUrl },
+    note: `Passwort zurücksetzen: ${v.resetUrl}`,
+  }),
+  trial_reminder: (v) => ({
+    subject: `${BRAND.name}: Testphase endet ${daysDe(v.daysLeft)}`,
+    heading: `Ihre Testphase endet ${daysDe(v.daysLeft)}`,
+    paragraphs: [
+      greetDe(v.name),
+      `die Testphase von „${oneLine(v.tenantName)}" läuft bis ${v.endDate}. Danach sind Ihre Daten nur noch lesbar und exportierbar.`,
+      contactDe(v.contact),
+    ],
+    action: { label: `${BRAND.name} öffnen`, url: v.actionUrl },
+  }),
+  trial_expired: (v) => ({
+    subject: `${BRAND.name}: Testphase abgelaufen`,
+    heading: "Testphase abgelaufen – nur Lesezugriff",
+    paragraphs: [
+      greetDe(v.name),
+      `die Testphase von „${oneLine(v.tenantName)}" ist am ${v.endDate} abgelaufen. Sie können sich weiter anmelden, Daten ansehen und exportieren – Änderungen sind nicht mehr möglich.`,
+      ...(v.deletionDate ? [`Ohne Umwandlung in die Vollversion werden die Daten am ${v.deletionDate} gelöscht.`] : []),
+      contactDe(v.contact),
+    ],
+    action: { label: "Daten exportieren", url: v.exportUrl },
+  }),
+  trial_deletion_notice: (v) => ({
+    subject: `${BRAND.name}: Daten werden am ${v.deletionDate} gelöscht`,
+    heading: "Löschung Ihrer Testdaten",
+    paragraphs: [
+      greetDe(v.name),
+      `die Daten von „${oneLine(v.tenantName)}" werden am ${v.deletionDate} endgültig gelöscht. Exportieren Sie vorher alles, was Sie behalten möchten.`,
+      contactDe(v.contact),
+    ],
+    action: { label: "Daten exportieren", url: v.exportUrl },
+  }),
+};
+
+const trialEn: { [K in TrialKey]: Builder<K> } = {
+  trial_confirm: (v) => ({
+    subject: `${BRAND.name}: confirm your trial`,
+    heading: "Confirm your trial",
+    paragraphs: [
+      greetEn(v.name),
+      `you would like to try ${BRAND.name} for "${oneLine(v.companyName)}". Your trial runs until ${v.trialEnd}.`,
+      "Confirm your e-mail address – we set up your account right away.",
+      "If you did not request this, ignore this e-mail. Nothing will be created.",
+    ],
+    action: { label: "Start trial", url: v.actionUrl },
+    note: `The link is valid until ${v.expires} and can only be used once.`,
+  }),
+  trial_existing_account: (v) => ({
+    subject: `${BRAND.name}: you already have an account`,
+    heading: "You already have an account",
+    paragraphs: [
+      greetEn(v.name),
+      `there already is a ${BRAND.name} account for this e-mail address. Another trial with the same address is not possible.`,
+      "Sign in with your existing account. Forgot your password? Reset it with the second link.",
+      "If you did not request this, ignore this e-mail.",
+    ],
+    action: { label: "Sign in", url: v.loginUrl },
+    note: `Reset password: ${v.resetUrl}`,
+  }),
+  trial_reminder: (v) => ({
+    subject: `${BRAND.name}: trial ends ${daysEn(v.daysLeft)}`,
+    heading: `Your trial ends ${daysEn(v.daysLeft)}`,
+    paragraphs: [
+      greetEn(v.name),
+      `the trial of "${oneLine(v.tenantName)}" runs until ${v.endDate}. Afterwards your data can only be viewed and exported.`,
+      contactEn(v.contact),
+    ],
+    action: { label: `Open ${BRAND.name}`, url: v.actionUrl },
+  }),
+  trial_expired: (v) => ({
+    subject: `${BRAND.name}: trial expired`,
+    heading: "Trial expired – read-only access",
+    paragraphs: [
+      greetEn(v.name),
+      `the trial of "${oneLine(v.tenantName)}" expired on ${v.endDate}. You can still sign in, view and export your data – changes are no longer possible.`,
+      ...(v.deletionDate ? [`Unless converted to the full version, the data will be deleted on ${v.deletionDate}.`] : []),
+      contactEn(v.contact),
+    ],
+    action: { label: "Export data", url: v.exportUrl },
+  }),
+  trial_deletion_notice: (v) => ({
+    subject: `${BRAND.name}: data will be deleted on ${v.deletionDate}`,
+    heading: "Deletion of your trial data",
+    paragraphs: [
+      greetEn(v.name),
+      `the data of "${oneLine(v.tenantName)}" will be deleted permanently on ${v.deletionDate}. Export everything you want to keep beforehand.`,
+      contactEn(v.contact),
+    ],
+    action: { label: "Export data", url: v.exportUrl },
+  }),
+};
+
 const de: { [K in TemplateKey]: Builder<K> } = {
   invitation: (v) => ({
     subject: `Ihr Zugang zu ${BRAND.name}`,
@@ -385,6 +518,7 @@ const de: { [K in TemplateKey]: Builder<K> } = {
   }),
   ...craftviaDe,
   ...customerDe,
+  ...trialDe,
 };
 
 const en: { [K in TemplateKey]: Builder<K> } = {
@@ -465,6 +599,7 @@ const en: { [K in TemplateKey]: Builder<K> } = {
   }),
   ...craftviaEn,
   ...customerEn,
+  ...trialEn,
 };
 
 const CATALOG: Record<Locale, { [K in TemplateKey]: Builder<K> }> = { de, en };
diff --git a/src/server/provision.ts b/src/server/provision.ts
index 7412f6c..a1e401d 100644
--- a/src/server/provision.ts
+++ b/src/server/provision.ts
@@ -8,8 +8,15 @@ export interface ProvisionOpts {
   slug: string;
   short?: string;
   sector?: string;
-  admin: { email: string; name: string; password: string };
+  /**
+   * Erster Administrator. `password` (Klartext, wird gehasht) ODER `passwordHash` (bereits
+   * Argon2id + Pepper, z. B. aus der bestätigten Testphasen-Anmeldung — L15).
+   * `mustChangePassword` gilt nur für eine NEU angelegte Identity (Einladungsweg).
+   */
+  admin: { email: string; name: string; password?: string; passwordHash?: string; mustChangePassword?: boolean };
   actorId?: string | null;
+  /** L15: nur diese Module aktivieren (neue Mandanten); ohne Angabe alle. */
+  modules?: readonly string[];
 }
 
 /**
@@ -52,12 +59,17 @@ export async function provisionTenant(prisma: PrismaClient, opts: ProvisionOpts)
 
   // 4. Erster Mandantenadministrator: globale Identity (Anmeldung) + Mitgliedschaft.
   //    Idempotent: eine bestehende Identity/ihr Passwort wird NICHT überschrieben.
-  const passwordHash = await hashPassword(opts.admin.password);
-  const identity = await prisma.identity.upsert({
-    where: { email: opts.admin.email },
-    update: {},
-    create: { email: opts.admin.email, passwordHash },
-  });
+  const existingIdentity = await prisma.identity.findUnique({ where: { email: opts.admin.email }, select: { id: true } });
+  const identity =
+    existingIdentity ??
+    (await prisma.identity.create({
+      data: {
+        email: opts.admin.email,
+        passwordHash: opts.admin.passwordHash ?? (await hashPassword(opts.admin.password ?? "")),
+        mustChangePassword: opts.admin.mustChangePassword ?? false,
+      },
+      select: { id: true },
+    }));
   const admin = await prisma.user.upsert({
     where: { tenantId_email: { tenantId: tenant.id, email: opts.admin.email } },
     update: { name: opts.admin.name, identityId: identity.id },
@@ -84,12 +96,12 @@ export async function provisionTenant(prisma: PrismaClient, opts: ProvisionOpts)
     },
   });
 
-  // 6. Alle Module aktivieren
+  // 6. Module aktivieren (L15: optional nur die gewählten; bestehende Zeilen bleiben unverändert)
   for (const m of MODULES) {
     await prisma.tenantModule.upsert({
       where: { tenantId_moduleKey: { tenantId: tenant.id, moduleKey: m.key } },
       update: {},
-      create: { tenantId: tenant.id, moduleKey: m.key, enabled: true },
+      create: { tenantId: tenant.id, moduleKey: m.key, enabled: opts.modules ? opts.modules.includes(m.key) : true },
     });
   }
 
@@ -97,5 +109,5 @@ export async function provisionTenant(prisma: PrismaClient, opts: ProvisionOpts)
     data: { tenantId: tenant.id, scope: "platform", actorId: opts.actorId ?? null, action: "provision", entity: "tenant", entityId: tenant.id, after: { name: opts.name } },
   });
 
-  return tenant;
+  return Object.assign(tenant, { adminUserId: admin.id, identityId: identity.id, identityCreated: !existingIdentity });
 }
diff --git a/src/server/rate-limit.ts b/src/server/rate-limit.ts
index b81b3c6..762885d 100644
--- a/src/server/rate-limit.ts
+++ b/src/server/rate-limit.ts
@@ -62,6 +62,12 @@ export const RATE_LIMITS = {
   api: { limit: perMinute("API_RATE_LIMIT_PER_MINUTE", 300), windowMs: 60_000 },
   /** L10b: Einsatz-/Sync-Endpunkte (/sync, /uploads, /field/**) je Nutzer — großzügig (Outbox, Vorab-Download). */
   apiField: { limit: perMinute("API_FIELD_RATE_LIMIT_PER_MINUTE", 1200), windowMs: 60_000 },
+  /** L15: öffentliche Testphasen-Anmeldung — je IP und je E-Mail-Adresse. */
+  trialSignup: { limit: 5, windowMs: 60 * 60_000 },
+  /** L15: Einlösen des Bestätigungslinks je IP. */
+  trialConfirm: { limit: 20, windowMs: 15 * 60_000 },
+  /** L15: serverseitige Schrittprüfung des Wizards (schreibt nichts) je IP. */
+  trialStepCheck: { limit: 120, windowMs: 15 * 60_000 },
 } as const satisfies Record<string, RateLimitRule>;
 
 export type RateLimitScope = keyof typeof RATE_LIMITS;
diff --git a/src/server/services/trial/abuse.ts b/src/server/services/trial/abuse.ts
new file mode 100644
index 0000000..bcd020d
--- /dev/null
+++ b/src/server/services/trial/abuse.ts
@@ -0,0 +1,13 @@
+import { checkRateLimit, type RateLimitResult } from "@/server/rate-limit";
+
+/**
+ * L15 Testphase: abuse protection of the public endpoints (no external CAPTCHA).
+ * Counts per IP AND per e-mail address (both counters are always increased, see rate-limit.ts).
+ * The key material is hashed inside rate-limit.ts — no clear-text IPs/addresses in memory.
+ */
+export function enforceTrialRateLimit(
+  scope: "trialSignup" | "trialConfirm" | "trialStepCheck",
+  parts: { ip?: string | null; email?: string | null },
+): RateLimitResult {
+  return checkRateLimit(scope, { ip: parts.ip ?? null, account: parts.email ? parts.email.trim().toLowerCase() : null });
+}
diff --git a/src/server/services/trial/admin.ts b/src/server/services/trial/admin.ts
new file mode 100644
index 0000000..fd11c06
--- /dev/null
+++ b/src/server/services/trial/admin.ts
@@ -0,0 +1,174 @@
+import { z } from "zod";
+import { prisma } from "@/server/db";
+import { writeAuditLog } from "@/server/audit";
+import { issueToken } from "@/server/auth-token";
+import { sendUserInvitationMail } from "@/server/auth-selfservice";
+import { ServiceError } from "@/server/services/context";
+import { addDaysToKey, isDateKey, todayKey, trialEndInstant } from "@/lib/trial/dates";
+import { daysMs, PLATFORM_TRIAL_MAX_DAYS, TRIAL_DELETION_GRACE_DAYS, TRIAL_DELETION_NOTICE_DAYS } from "./config";
+import { provisionTrialTenant, type ProvisionTrialResult } from "./provision";
+
+/**
+ * L15 Testphase: platform-admin operations on trial tenants. ONLY for active platform full admins —
+ * every function re-checks the actor against the PlatformAdmin store (tenant administrators have no
+ * PlatformAdmin row and are rejected with `forbidden`). The adapter additionally requires the
+ * platform session (src/server/actions/trial-platform.ts). Every change → audit (scope platform,
+ * attached to the tenant so it shows in the tenant's audit trail) with before/after.
+ */
+
+export type PlatformActor = { platformAdminId: string };
+
+async function assertPlatformFullAdmin(actor: PlatformActor): Promise<void> {
+  const admin = actor.platformAdminId
+    ? await prisma.platformAdmin.findUnique({ where: { id: actor.platformAdminId }, select: { status: true, role: true } })
+    : null;
+  if (!admin || admin.status !== "ACTIVE" || admin.role !== "full") throw new ServiceError("forbidden", "platform_admin_required");
+}
+
+const LIFECYCLE_SELECT = {
+  id: true,
+  name: true,
+  status: true,
+  plan: true,
+  trialEndsAt: true,
+  convertedAt: true,
+  readOnlySince: true,
+  deletionDueAt: true,
+  trialDeletedAt: true,
+} as const;
+
+async function loadTrialTenant(tenantId: string) {
+  const tenant = await prisma.tenant.findUnique({ where: { id: tenantId }, select: LIFECYCLE_SELECT });
+  if (!tenant) throw new ServiceError("not_found", "tenant not found");
+  if (tenant.trialDeletedAt || tenant.status === "ARCHIVED") throw new ServiceError("invalid", "tenant_deleted");
+  if (tenant.plan !== "TRIAL" || !tenant.trialEndsAt) throw new ServiceError("invalid", "not_a_trial");
+  return tenant;
+}
+
+type Snapshot = { plan: string; trialEndsAt: Date | null; readOnlySince: Date | null; deletionDueAt: Date | null; convertedAt: Date | null };
+const snap = (t: Snapshot) => ({ plan: t.plan, trialEndsAt: t.trialEndsAt, readOnlySince: t.readOnlySince, deletionDueAt: t.deletionDueAt, convertedAt: t.convertedAt });
+
+async function audit(actor: PlatformActor, tenantId: string, entity: string, before: Snapshot, after: Snapshot) {
+  await writeAuditLog({ tenantId, scope: "platform", actorId: actor.platformAdminId, action: "update", entity, entityId: tenantId, before: snap(before), after: snap(after) });
+}
+
+const RESET_NOTICES = { trialReminder7At: null, trialReminder3At: null, trialReminder1At: null, trialExpiredNoticeAt: null, trialDeletionNoticeAt: null } as const;
+
+export const platformTrialSchema = z.object({
+  companyName: z.string().trim().min(2).max(120),
+  sector: z.string().trim().max(80).default(""),
+  adminName: z.string().trim().min(2).max(120),
+  adminEmail: z.string().trim().toLowerCase().max(200).regex(/^[^\s@]+@[^\s@]+\.[^\s@]{2,}$/),
+  endDate: z.string().refine(isDateKey, "date_invalid"),
+  sampleData: z.boolean().default(true),
+});
+
+function assertEndDateRange(endDateKey: string, now: Date) {
+  if (!isDateKey(endDateKey)) throw new ServiceError("invalid", "date_invalid", { field: "endDate" });
+  const today = todayKey(now);
+  if (endDateKey < today) throw new ServiceError("invalid", "date_in_past", { field: "endDate" });
+  if (endDateKey > addDaysToKey(today, PLATFORM_TRIAL_MAX_DAYS)) throw new ServiceError("invalid", "date_too_late", { field: "endDate" });
+}
+
+/** Wizard "Testmandant anlegen": provisioning + invitation of a NEW admin identity (existing people keep their access). */
+export async function createPlatformTrialTenant(
+  actor: PlatformActor,
+  raw: z.input<typeof platformTrialSchema>,
+  opts: { now?: Date; invite?: (input: Parameters<typeof sendUserInvitationMail>[0]) => Promise<unknown> } = {},
+): Promise<ProvisionTrialResult & { invited: boolean }> {
+  await assertPlatformFullAdmin(actor);
+  const now = opts.now ?? new Date();
+  const input = platformTrialSchema.parse(raw);
+  assertEndDateRange(input.endDate, now);
+  const result = await provisionTrialTenant({
+    companyName: input.companyName,
+    sector: input.sector,
+    admin: { name: input.adminName, email: input.adminEmail },
+    endDateKey: input.endDate,
+    sampleData: input.sampleData,
+    source: "platform",
+    actorId: actor.platformAdminId,
+    now,
+  });
+  let invited = false;
+  if (result.identityCreated) {
+    const { raw: token, expiresAt } = await issueToken({ principalType: "identity", principalId: result.identityId, tenantId: result.tenantId, type: "invitation" });
+    await (opts.invite ?? sendUserInvitationMail)({ to: input.adminEmail, name: input.adminName, tenantId: result.tenantId, tenantName: input.companyName, rawToken: token, expiresAt });
+    invited = true;
+  }
+  return { ...result, invited };
+}
+
+/** Change/extend the end date — also after expiry (the tenant becomes writable again). */
+export async function changeTrialEndDate(actor: PlatformActor, tenantId: string, endDateKey: string, opts: { now?: Date } = {}) {
+  await assertPlatformFullAdmin(actor);
+  const now = opts.now ?? new Date();
+  assertEndDateRange(endDateKey, now);
+  const before = await loadTrialTenant(tenantId);
+  const endsAt = trialEndInstant(endDateKey);
+  const after = await prisma.tenant.update({
+    where: { id: tenantId },
+    data: {
+      trialEndsAt: endsAt,
+      readOnlySince: null,
+      // a cancelled deletion stays cancelled; otherwise the grace period follows the new end
+      deletionDueAt: before.deletionDueAt ? new Date(endsAt.getTime() + daysMs(TRIAL_DELETION_GRACE_DAYS)) : null,
+      ...RESET_NOTICES,
+    },
+    select: LIFECYCLE_SELECT,
+  });
+  await audit(actor, tenantId, "trial_end_date", before, after);
+  return after;
+}
+
+/** Convert to the full version: never deleted, never read-only again. */
+export async function convertTenantToFull(actor: PlatformActor, tenantId: string, opts: { now?: Date } = {}) {
+  await assertPlatformFullAdmin(actor);
+  const before = await loadTrialTenant(tenantId);
+  const after = await prisma.tenant.update({
+    where: { id: tenantId },
+    data: { plan: "FULL", convertedAt: opts.now ?? new Date(), readOnlySince: null, deletionDueAt: null, trialDeletionNoticeAt: null },
+    select: LIFECYCLE_SELECT,
+  });
+  await audit(actor, tenantId, "trial_converted", before, after);
+  return after;
+}
+
+/** End the trial immediately (read-only from now on). */
+export async function endTrialNow(actor: PlatformActor, tenantId: string, opts: { now?: Date } = {}) {
+  await assertPlatformFullAdmin(actor);
+  const now = opts.now ?? new Date();
+  const before = await loadTrialTenant(tenantId);
+  const after = await prisma.tenant.update({
+    where: { id: tenantId },
+    data: {
+      trialEndsAt: now,
+      readOnlySince: now,
+      deletionDueAt: before.deletionDueAt ? new Date(now.getTime() + daysMs(TRIAL_DELETION_GRACE_DAYS)) : null,
+      trialExpiredNoticeAt: null,
+      trialDeletionNoticeAt: null,
+    },
+    select: LIFECYCLE_SELECT,
+  });
+  await audit(actor, tenantId, "trial_ended", before, after);
+  return after;
+}
+
+/** Schedule the automatic deletion (end + 30 days, at least TRIAL_DELETION_NOTICE_DAYS from now so the notice can go out). */
+export async function scheduleTrialDeletion(actor: PlatformActor, tenantId: string, opts: { now?: Date } = {}) {
+  await assertPlatformFullAdmin(actor);
+  const now = opts.now ?? new Date();
+  const before = await loadTrialTenant(tenantId);
+  const due = Math.max(before.trialEndsAt!.getTime() + daysMs(TRIAL_DELETION_GRACE_DAYS), now.getTime() + daysMs(TRIAL_DELETION_NOTICE_DAYS));
+  const after = await prisma.tenant.update({ where: { id: tenantId }, data: { deletionDueAt: new Date(due), trialDeletionNoticeAt: null }, select: LIFECYCLE_SELECT });
+  await audit(actor, tenantId, "trial_deletion_scheduled", before, after);
+  return after;
+}
+
+export async function cancelTrialDeletion(actor: PlatformActor, tenantId: string) {
+  await assertPlatformFullAdmin(actor);
+  const before = await loadTrialTenant(tenantId);
+  const after = await prisma.tenant.update({ where: { id: tenantId }, data: { deletionDueAt: null, trialDeletionNoticeAt: null }, select: LIFECYCLE_SELECT });
+  await audit(actor, tenantId, "trial_deletion_cancelled", before, after);
+  return after;
+}
diff --git a/src/server/services/trial/config.ts b/src/server/services/trial/config.ts
new file mode 100644
index 0000000..db265d8
--- /dev/null
+++ b/src/server/services/trial/config.ts
@@ -0,0 +1,34 @@
+/**
+ * L15 Testphase: operating parameters (env, read at call time so tests can override them).
+ *   TRIAL_MAX_DAYS       longest self-service trial in days (1–365, default 30)
+ *   TRIAL_CONTACT_EMAIL  contact shown in banners and trial mails (optional)
+ */
+
+export const TRIAL_DEFAULT_DAYS = 14;
+/** Automatic deletion of an unconverted trial tenant after its end. */
+export const TRIAL_DELETION_GRACE_DAYS = 30;
+/** Deletion notice before the deletion date. */
+export const TRIAL_DELETION_NOTICE_DAYS = 7;
+/** Reminder mails before the end (calendar days in Berlin). */
+export const TRIAL_REMINDER_DAYS = [7, 3, 1] as const;
+/** Banner countdown from this many days before the end. */
+export const TRIAL_BANNER_DAYS = 7;
+/** Double opt-in link validity. */
+export const TRIAL_SIGNUP_TOKEN_TTL_MS = 24 * 60 * 60 * 1000;
+/** Unconfirmed/finished signups are purged this long after their link expired (data minimisation). */
+export const TRIAL_SIGNUP_RETENTION_DAYS = 7;
+/** Platform admins may set end dates up to one year ahead. */
+export const PLATFORM_TRIAL_MAX_DAYS = 365;
+
+const DAY_MS = 24 * 60 * 60 * 1000;
+export const daysMs = (days: number) => days * DAY_MS;
+
+export function trialMaxDays(): number {
+  const v = Number(process.env.TRIAL_MAX_DAYS);
+  return Number.isInteger(v) && v >= 1 && v <= 365 ? v : 30;
+}
+
+export function trialContactEmail(): string | null {
+  const v = process.env.TRIAL_CONTACT_EMAIL?.trim();
+  return v && /^[^\s@]+@[^\s@]+$/.test(v) ? v : null;
+}
diff --git a/src/server/services/trial/export.ts b/src/server/services/trial/export.ts
new file mode 100644
index 0000000..ad0965e
--- /dev/null
+++ b/src/server/services/trial/export.ts
@@ -0,0 +1,194 @@
+import { prisma, dbForTenant } from "@/server/db";
+import { writeAuditLog } from "@/server/audit";
+import { buildZip, type ZipEntry } from "@/server/backup/zip";
+import { enqueueJob, JOB_QUEUES } from "@/server/jobs/queues";
+import { storage } from "@/server/storage/adapter";
+import { readStoredBytes } from "@/server/services/documents/read";
+import { assertCan, ServiceError, type ServiceCtx } from "@/server/services/context";
+import { todayKey } from "@/lib/trial/dates";
+import { daysMs } from "./config";
+
+/**
+ * L15 Testphase: data export for tenant administrators — ZIP with CSV (semicolon, UTF-8 BOM, Excel)
+ * and JSON of master data, work orders, times, material, reports, plus the stored files (documents,
+ * report PDFs, photos). Runs as worker job `tenant-export`; the result is stored under
+ * `<tenantId>/uploads/…` in the object storage and downloaded via /settings/export/<id> (session +
+ * tenant:manage, never a public link). Allowed in the read-only state (not a business mutation).
+ *
+ * The existing backup/DSGVO export (src/server/backup/dsgvo-zip.ts) is an operator tool (platform
+ * portal, all tables incl. internal ones, JSON only); its ZIP writer is reused here.
+ */
+
+export const EXPORT_DOWNLOAD_DAYS = 7;
+/** Upper bound for embedded files; beyond that the README lists what was left out. */
+const MAX_FILE_BYTES = 500 * 1024 * 1024;
+
+type Dispatch = (tenantId: string, exportId: string, actorId: string) => Promise<void>;
+
+const defaultDispatch: Dispatch = async (tenantId, exportId, actorId) => {
+  if (!(await enqueueJob(JOB_QUEUES.tenantExport, { tenantId, entityId: exportId, actorId }))) {
+    await buildTenantExport(tenantId, exportId); // no Redis (dev/demo): inline
+  }
+};
+
+export async function requestTenantExport(ctx: ServiceCtx, deps: { dispatch?: Dispatch; now?: Date } = {}) {
+  assertCan(ctx, "tenant:manage");
+  const now = deps.now ?? new Date();
+  const open = await ctx.db.tenantExport.findFirst({ where: { status: { in: ["queued", "running"] }, createdAt: { gt: new Date(now.getTime() - 30 * 60_000) } }, select: { id: true } });
+  if (open) throw new ServiceError("conflict", "export_running");
+  const row = await ctx.db.tenantExport.create({ data: { tenantId: ctx.tenantId, requestedById: ctx.userId } });
+  await writeAuditLog({ tenantId: ctx.tenantId, actorId: ctx.userId, action: "export", entity: "tenant_export", entityId: row.id, after: { status: "queued" } });
+  await (deps.dispatch ?? defaultDispatch)(ctx.tenantId, row.id, ctx.userId);
+  return row;
+}
+
+export async function listTenantExports(ctx: ServiceCtx, opts: { now?: Date } = {}) {
+  assertCan(ctx, "tenant:manage");
+  const now = (opts.now ?? new Date()).getTime();
+  const rows = await ctx.db.tenantExport.findMany({
+    orderBy: { createdAt: "desc" },
+    take: 10,
+    select: { id: true, status: true, fileName: true, bytes: true, error: true, expiresAt: true, createdAt: true },
+  });
+  return rows.map((r) => ({ ...r, expired: r.status === "done" && !!r.expiresAt && r.expiresAt.getTime() <= now }));
+}
+
+// ---------------------------------------------------------------- serialisation
+
+function scalar(v: unknown): string {
+  if (v === null || v === undefined) return "";
+  if (v instanceof Date) return v.toISOString();
+  if (typeof v === "bigint") return v.toString();
+  if (typeof v === "object") {
+    // Prisma.Decimal
+    if (typeof (v as { toFixed?: unknown }).toFixed === "function") return String(v);
+    return JSON.stringify(v, (_k, x) => (typeof x === "bigint" ? x.toString() : x));
+  }
+  return String(v);
+}
+
+function csvCell(v: unknown): string {
+  let s = scalar(v);
+  // CSV/formula injection: never let a cell start with a formula character
+  if (/^[=+\-@\t\r]/.test(s)) s = `'${s}`;
+  return /[";\n\r]/.test(s) ? `"${s.replace(/"/g, '""')}"` : s;
+}
+
+export function toCsv(rows: Record<string, unknown>[]): string {
+  const headers: string[] = [];
+  for (const row of rows) for (const key of Object.keys(row)) if (!headers.includes(key)) headers.push(key);
+  const lines = [headers.map(csvCell).join(";"), ...rows.map((row) => headers.map((h) => csvCell(row[h])).join(";"))];
+  return `${lines.join("\r\n")}\r\n`;
+}
+
+function toJson(rows: unknown): string {
+  return JSON.stringify(rows, (_k, v) => (typeof v === "bigint" ? v.toString() : v && typeof v === "object" && typeof (v as { toFixed?: unknown }).toFixed === "function" && !(v instanceof Date) ? String(v) : v), 2);
+}
+
+const safeName = (s: string) => s.replace(/[^\w.\-]+/g, "_").slice(0, 100) || "datei";
+
+/** Builds the ZIP for one export row (worker). Idempotent: only a `queued` row is processed. */
+export async function buildTenantExport(tenantId: string, exportId: string, opts: { now?: Date } = {}): Promise<void> {
+  const now = opts.now ?? new Date();
+  const db = dbForTenant(tenantId);
+  const claim = await db.tenantExport.updateMany({ where: { id: exportId, status: "queued" }, data: { status: "running" } });
+  if (claim.count !== 1) return;
+  const row = await db.tenantExport.findFirst({ where: { id: exportId }, select: { requestedById: true } });
+
+  try {
+    const tenant = await prisma.tenant.findUnique({ where: { id: tenantId }, select: { name: true, slug: true } });
+    if (!tenant) throw new Error("tenant not found");
+
+    const datasets: [string, Promise<Record<string, unknown>[]>][] = [
+      ["kunden", db.customer.findMany({ orderBy: { createdAt: "asc" } })],
+      ["ansprechpartner", db.contact.findMany({ orderBy: { createdAt: "asc" } })],
+      ["objekte", db.site.findMany({ orderBy: { createdAt: "asc" } })],
+      ["teams", db.team.findMany({ orderBy: { createdAt: "asc" } })],
+      ["team-mitglieder", db.teamMember.findMany()],
+      ["nutzer", db.user.findMany({ select: { id: true, name: true, email: true, status: true, createdAt: true } })],
+      ["auftraege", db.workOrder.findMany({ orderBy: { createdAt: "asc" } })],
+      ["checklisten", db.checklistItem.findMany()],
+      ["material-vorgabe", db.materialPlan.findMany()],
+      ["material", db.materialUsage.findMany({ orderBy: { createdAt: "asc" } })],
+      ["einsaetze", db.workSession.findMany()],
+      ["zeiten", db.timeEntry.findMany({ orderBy: { startedAt: "asc" } })],
+      ["notizen", db.activityNote.findMany({ orderBy: { createdAt: "asc" } })],
+      ["berichte", db.report.findMany({ orderBy: { createdAt: "asc" } })],
+      ["unterschriften", db.signature.findMany()],
+      ["fotos", db.photo.findMany()],
+      ["dokumente", db.document.findMany({ where: { deletedAt: null }, orderBy: { createdAt: "asc" } })],
+      ["meilensteine", db.workOrderMilestone.findMany()],
+      ["abrechnung", db.billingRecord.findMany()],
+    ];
+
+    const entries: ZipEntry[] = [];
+    const counts: Record<string, number> = {};
+    let documents: { id: string; fileName: string; storageKey: string; fileSize: number }[] = [];
+    for (const [name, query] of datasets) {
+      const rows = await query;
+      counts[name] = rows.length;
+      entries.push({ name: `csv/${name}.csv`, data: toCsv(rows) });
+      entries.push({ name: `json/${name}.json`, data: toJson(rows) });
+      if (name === "dokumente") documents = rows as unknown as typeof documents;
+    }
+
+    let fileBytes = 0;
+    let files = 0;
+    const skipped: string[] = [];
+    for (const doc of documents) {
+      if (fileBytes + doc.fileSize > MAX_FILE_BYTES) {
+        skipped.push(`${doc.id} ${doc.fileName} (Größenlimit)`);
+        continue;
+      }
+      const bytes = await readStoredBytes(doc.storageKey).catch(() => null);
+      if (!bytes) {
+        skipped.push(`${doc.id} ${doc.fileName} (nicht im Speicher)`);
+        continue;
+      }
+      entries.push({ name: `dateien/${doc.id}-${safeName(doc.fileName)}`, data: bytes });
+      fileBytes += bytes.length;
+      files++;
+    }
+
+    entries.unshift({
+      name: "LIESMICH.txt",
+      data:
+        `Craftvia – Datenexport\r\nBetrieb: ${tenant.name} (${tenant.slug})\r\nErstellt: ${now.toISOString()}\r\n\r\n` +
+        `csv/      Tabellen im CSV-Format (Semikolon, UTF-8) – öffnen z. B. mit Excel oder LibreOffice\r\n` +
+        `json/     dieselben Daten als JSON (maschinenlesbar)\r\n` +
+        `dateien/  gespeicherte Dateien (Dokumente, Berichts-PDFs, Fotos, Unterschriften); Dateiname beginnt mit der Dokument-ID aus dokumente.csv\r\n\r\n` +
+        `Datensätze: ${Object.entries(counts).map(([k, v]) => `${k} ${v}`).join(", ")}\r\n` +
+        `Dateien: ${files}${skipped.length ? `\r\nNicht enthalten:\r\n${skipped.join("\r\n")}` : ""}\r\n`,
+    });
+
+    const zip = buildZip(entries);
+    const fileName = `craftvia-export-${tenant.slug}-${todayKey(now)}.zip`;
+    const stored = await storage.put({ tenantId, filename: fileName, contentType: "application/zip", bytes: zip });
+    if (stored.storageKey.startsWith("stub://")) throw new Error("object storage not configured");
+
+    const summary = { counts, files, skipped: skipped.length };
+    await db.tenantExport.update({
+      where: { id: exportId },
+      data: { status: "done", storageKey: stored.storageKey, fileName, bytes: zip.length, summary, expiresAt: new Date(now.getTime() + daysMs(EXPORT_DOWNLOAD_DAYS)), error: null },
+    });
+    await writeAuditLog({ tenantId, actorId: row?.requestedById ?? undefined, action: "export", entity: "tenant_export", entityId: exportId, after: { status: "done", bytes: zip.length, ...summary } });
+  } catch (err) {
+    console.error(`[tenant-export] ${exportId} failed:`, (err as Error).message);
+    await db.tenantExport.update({ where: { id: exportId }, data: { status: "failed", error: (err as Error).message.slice(0, 300) } });
+  }
+}
+
+/** Download of a finished export (tenant:manage; expired links → invalid). */
+export async function openTenantExport(ctx: ServiceCtx, exportId: string, opts: { now?: Date } = {}): Promise<{ bytes: Buffer; fileName: string }> {
+  assertCan(ctx, "tenant:manage");
+  const now = opts.now ?? new Date();
+  const row = await ctx.db.tenantExport.findFirst({ where: { id: exportId, status: "done" }, select: { id: true, storageKey: true, fileName: true, expiresAt: true } });
+  if (!row || !row.storageKey) throw new ServiceError("not_found", "export not found");
+  if (row.expiresAt && row.expiresAt.getTime() <= now.getTime()) throw new ServiceError("invalid", "export_expired");
+  // defence in depth: the key must belong to this tenant
+  if (!row.storageKey.startsWith(`${ctx.tenantId}/`)) throw new ServiceError("not_found", "export not found");
+  const bytes = await readStoredBytes(row.storageKey);
+  if (!bytes) throw new ServiceError("not_found", "export file missing");
+  await writeAuditLog({ tenantId: ctx.tenantId, actorId: ctx.userId, action: "export", entity: "tenant_export_download", entityId: row.id });
+  return { bytes, fileName: row.fileName ?? "craftvia-export.zip" };
+}
diff --git a/src/server/services/trial/jobs.ts b/src/server/services/trial/jobs.ts
new file mode 100644
index 0000000..75ef4e7
--- /dev/null
+++ b/src/server/services/trial/jobs.ts
@@ -0,0 +1,15 @@
+import { getTrialState } from "./state";
+
+/**
+ * L15 Testphase: background jobs that write ON BEHALF OF A USER must not run for an expired trial
+ * tenant (e.g. an import extraction or transcription queued shortly before the end).
+ * System derivations of data committed before the end (report/billing PDFs, thumbnails, geocoding)
+ * and platform maintenance jobs keep running; the trial jobs themselves are never blocked.
+ */
+export const TRIAL_BLOCKED_QUEUES: readonly string[] = ["import-extraction", "transcription"];
+
+export async function isJobBlockedByTrial(queue: string, payload: { tenantId?: string | null }): Promise<boolean> {
+  if (!TRIAL_BLOCKED_QUEUES.includes(queue)) return false;
+  if (!payload.tenantId || payload.tenantId === "*") return false;
+  return (await getTrialState(payload.tenantId)).readOnly;
+}
diff --git a/src/server/services/trial/lifecycle.ts b/src/server/services/trial/lifecycle.ts
new file mode 100644
index 0000000..929618a
--- /dev/null
+++ b/src/server/services/trial/lifecycle.ts
@@ -0,0 +1,180 @@
+import { prisma } from "@/server/db";
+import { writePlatformAudit } from "@/server/audit";
+import { offboardTenant } from "@/server/dsgvo/deletion";
+import { absoluteUrl } from "@/server/mail/config";
+import { enqueueMail } from "@/server/mail/service";
+import { normalizeLocale } from "@/server/mail/templates";
+import { formatDateKey, formatInstantDate } from "@/lib/trial/dates";
+import { daysMs, trialContactEmail, TRIAL_DELETION_NOTICE_DAYS, TRIAL_REMINDER_DAYS, TRIAL_SIGNUP_RETENTION_DAYS } from "./config";
+import { computeTrialState, TRIAL_SELECT } from "./state";
+import { tenantAdminRecipients } from "./mail";
+import { purgeTenantObjects } from "./storage-purge";
+
+/**
+ * L15 Testphase: daily lifecycle job (BullMQ job scheduler `trial-lifecycle-daily`, idempotent).
+ *   - reminders 7/3/1 days before the end (each at most once; a missed run sends only the closest)
+ *   - expiry mail on the end day (+ readOnlySince)
+ *   - deletion notice TRIAL_DELETION_NOTICE_DAYS before `deletionDueAt`
+ *   - deletion at `deletionDueAt` through the existing tenant offboarding (topology of all
+ *     TENANT_MODELS + storage prefix `<tenantId>/`), platform audit
+ *   - purge of old signup rows (data minimisation)
+ * Every mail is "claimed" with a conditional update (column still NULL) before sending, so parallel
+ * workers or re-runs never send twice. Converted or extended tenants are never deleted: the
+ * deletion re-checks and claims the row immediately before offboarding.
+ */
+
+export type LifecycleSummary = {
+  checked: number;
+  reminders: number;
+  expiredNotices: number;
+  deletionNotices: number;
+  deleted: string[];
+  purgedSignups: number;
+};
+
+type Deps = { now?: Date; tenantIds?: string[]; sendMail?: typeof enqueueMail };
+
+const REMINDER_COLUMN = { 7: "trialReminder7At", 3: "trialReminder3At", 1: "trialReminder1At" } as const;
+
+async function mailAdmins(
+  tenantId: string,
+  send: typeof enqueueMail,
+  build: (r: { name: string; email: string; locale: "de" | "en" }) => Parameters<typeof enqueueMail>[0],
+): Promise<number> {
+  let n = 0;
+  for (const r of await tenantAdminRecipients(tenantId)) {
+    const res = await send(build({ name: r.name, email: r.email, locale: normalizeLocale(r.locale) }));
+    if (res.status !== "duplicate") n++;
+  }
+  return n;
+}
+
+export async function runTrialLifecycle(deps: Deps = {}): Promise<LifecycleSummary> {
+  const now = deps.now ?? new Date();
+  const send = deps.sendMail ?? enqueueMail;
+  const contact = trialContactEmail() ?? undefined;
+  const summary: LifecycleSummary = { checked: 0, reminders: 0, expiredNotices: 0, deletionNotices: 0, deleted: [], purgedSignups: 0 };
+
+  const tenants = await prisma.tenant.findMany({
+    where: { plan: "TRIAL", trialDeletedAt: null, status: { not: "ARCHIVED" }, trialEndsAt: { not: null }, ...(deps.tenantIds ? { id: { in: deps.tenantIds } } : {}) },
+    select: { id: true, name: true, ...TRIAL_SELECT, trialReminder7At: true, trialReminder3At: true, trialReminder1At: true, trialExpiredNoticeAt: true, trialDeletionNoticeAt: true },
+    orderBy: { createdAt: "asc" },
+  });
+
+  for (const t of tenants) {
+    summary.checked++;
+    try {
+      const state = computeTrialState(t, now);
+      const endDate = (locale: string) => formatDateKey(state.endDateKey!, locale);
+
+      if (!state.expired) {
+        const threshold = [...TRIAL_REMINDER_DAYS].sort((a, b) => a - b).find((d) => state.daysLeft! <= d);
+        if (threshold !== undefined && !t[REMINDER_COLUMN[threshold]]) {
+          // claim this threshold and every larger one (a missed run must not send an older reminder later)
+          const columns = TRIAL_REMINDER_DAYS.filter((d) => d >= threshold).map((d) => REMINDER_COLUMN[d]);
+          const claim = await prisma.tenant.updateMany({
+            where: { id: t.id, plan: "TRIAL", [REMINDER_COLUMN[threshold]]: null },
+            data: Object.fromEntries(columns.map((c) => [c, now])),
+          });
+          if (claim.count === 1) {
+            await mailAdmins(t.id, send, (r) => ({
+              template: "trial_reminder",
+              to: r.email,
+              tenantId: t.id,
+              locale: r.locale,
+              vars: { name: r.name, tenantName: t.name, daysLeft: state.daysLeft!, endDate: endDate(r.locale), actionUrl: absoluteUrl("/dashboard"), contact },
+            }));
+            summary.reminders++;
+          }
+        }
+        continue;
+      }
+
+      if (!t.trialExpiredNoticeAt) {
+        const claim = await prisma.tenant.updateMany({
+          where: { id: t.id, plan: "TRIAL", trialExpiredNoticeAt: null },
+          data: { trialExpiredNoticeAt: now, readOnlySince: t.readOnlySince ?? t.trialEndsAt },
+        });
+        if (claim.count === 1) {
+          await mailAdmins(t.id, send, (r) => ({
+            template: "trial_expired",
+            to: r.email,
+            tenantId: t.id,
+            locale: r.locale,
+            vars: { name: r.name, tenantName: t.name, endDate: endDate(r.locale), deletionDate: t.deletionDueAt ? formatInstantDate(t.deletionDueAt, r.locale) : undefined, exportUrl: absoluteUrl("/settings/export"), contact },
+          }));
+          summary.expiredNotices++;
+        }
+      }
+
+      if (!t.deletionDueAt) continue;
+      if (now.getTime() >= t.deletionDueAt.getTime()) {
+        const res = await deleteTrialTenant(t.id, { now });
+        if (res.deleted) summary.deleted.push(t.id);
+      } else if (now.getTime() >= t.deletionDueAt.getTime() - daysMs(TRIAL_DELETION_NOTICE_DAYS) && !t.trialDeletionNoticeAt) {
+        const claim = await prisma.tenant.updateMany({ where: { id: t.id, plan: "TRIAL", trialDeletionNoticeAt: null, deletionDueAt: t.deletionDueAt }, data: { trialDeletionNoticeAt: now } });
+        if (claim.count === 1) {
+          await mailAdmins(t.id, send, (r) => ({
+            template: "trial_deletion_notice",
+            to: r.email,
+            tenantId: t.id,
+            locale: r.locale,
+            vars: { name: r.name, tenantName: t.name, deletionDate: formatInstantDate(t.deletionDueAt!, r.locale), exportUrl: absoluteUrl("/settings/export"), contact },
+          }));
+          summary.deletionNotices++;
+        }
+      }
+    } catch (err) {
+      // one broken tenant must not stop the others; the next run retries
+      console.error(`[trial-lifecycle] tenant ${t.id} failed:`, (err as Error).message);
+    }
+  }
+
+  if (!deps.tenantIds) {
+    const { count } = await prisma.trialSignup.deleteMany({ where: { expiresAt: { lt: new Date(now.getTime() - daysMs(TRIAL_SIGNUP_RETENTION_DAYS)) } } });
+    summary.purgedSignups = count;
+  }
+  return summary;
+}
+
+/**
+ * Deletes an expired, unconverted trial tenant. Double check + claim right before the deletion:
+ * the conditional update only matches while the tenant is still TRIAL, unconverted, expired and due —
+ * a conversion/extension a moment earlier makes it a no-op. The tenant is suspended during deletion
+ * (no logins) and archived by the offboarding afterwards.
+ */
+export async function deleteTrialTenant(tenantId: string, opts: { now?: Date } = {}): Promise<{ deleted: boolean }> {
+  const now = opts.now ?? new Date();
+  const tenant = await prisma.tenant.findUnique({ where: { id: tenantId }, select: { id: true, slug: true } });
+  if (!tenant) return { deleted: false };
+  const claim = await prisma.tenant.updateMany({
+    where: {
+      id: tenantId,
+      plan: "TRIAL",
+      convertedAt: null,
+      trialDeletedAt: null,
+      status: { not: "ARCHIVED" },
+      trialEndsAt: { lte: now },
+      deletionDueAt: { lte: now },
+    },
+    data: { status: "SUSPENDED" },
+  });
+  if (claim.count !== 1) return { deleted: false };
+
+  const result = await offboardTenant(tenantId, { reason: "trial_expired", purgeFiles: true, portabilitySnapshot: false });
+  let files = 0;
+  try {
+    files = await purgeTenantObjects(tenantId);
+  } catch (err) {
+    console.error(`[trial-lifecycle] storage purge for ${tenantId} failed:`, (err as Error).message);
+  }
+  await prisma.tenant.update({ where: { id: tenantId }, data: { trialDeletedAt: now, deletionDueAt: null } });
+  await prisma.trialSignup.deleteMany({ where: { provisionedTenantId: tenantId } });
+  await writePlatformAudit({
+    action: "delete",
+    entity: "trial_tenant",
+    entityId: tenantId,
+    after: { slug: tenant.slug, deletedRows: result.deletedRows, deletedIdentities: result.deletedIdentities, files, certificateId: result.certificateId },
+  });
+  return { deleted: true };
+}
diff --git a/src/server/services/trial/mail.ts b/src/server/services/trial/mail.ts
new file mode 100644
index 0000000..ddcb66a
--- /dev/null
+++ b/src/server/services/trial/mail.ts
@@ -0,0 +1,11 @@
+import { dbForTenant } from "@/server/db";
+
+/** L15 Testphase: active tenant administrators (recipients of reminder/expiry/deletion mails). */
+export async function tenantAdminRecipients(tenantId: string): Promise<{ userId: string; email: string; name: string; locale: string }[]> {
+  const users = await dbForTenant(tenantId).user.findMany({
+    where: { status: "ACTIVE", userRoles: { some: { role: { key: "tenant-admin" } } } },
+    select: { id: true, email: true, name: true, identity: { select: { status: true, uiLocale: true } } },
+    orderBy: { createdAt: "asc" },
+  });
+  return users.filter((u) => u.identity.status === "ACTIVE").map((u) => ({ userId: u.id, email: u.email, name: u.name, locale: u.identity.uiLocale }));
+}
diff --git a/src/server/services/trial/onboarding.ts b/src/server/services/trial/onboarding.ts
new file mode 100644
index 0000000..a515a04
--- /dev/null
+++ b/src/server/services/trial/onboarding.ts
@@ -0,0 +1,84 @@
+import { prisma } from "@/server/db";
+import { writeAuditLog } from "@/server/audit";
+import { assertCan, can, ServiceError, type ServiceCtx } from "@/server/services/context";
+import { SAMPLE_ORDER_PREFIX, SAMPLE_TEAM_NAME } from "./sample-data";
+import { assertTenantWritable } from "./state";
+
+/**
+ * L15 Testphase: "Erste Schritte" checklist on the dashboard of tenants that started as a trial.
+ * Items are detected automatically where possible (sample data does not count) and can be ticked
+ * manually; the whole card can be hidden. State in `TenantSettings.onboarding`.
+ */
+
+export const ONBOARDING_ITEMS = [
+  { key: "company", href: "/settings" },
+  { key: "team", href: "/teams" },
+  { key: "technician", href: "/settings/users" },
+  { key: "first_order", href: "/work-orders/new" },
+  { key: "mobile", href: "/m" },
+] as const;
+
+export type OnboardingKey = (typeof ONBOARDING_ITEMS)[number]["key"];
+type OnboardingJson = { done: string[]; hidden: boolean };
+
+function parse(value: unknown): OnboardingJson {
+  const v = value && typeof value === "object" ? (value as Record<string, unknown>) : {};
+  return { done: Array.isArray(v.done) ? v.done.filter((x): x is string => typeof x === "string") : [], hidden: v.hidden === true };
+}
+
+export function isOnboardingKey(key: string): key is OnboardingKey {
+  return ONBOARDING_ITEMS.some((i) => i.key === key);
+}
+
+export async function getOnboardingChecklist(ctx: ServiceCtx) {
+  if (!can(ctx, "tenant:manage")) return null;
+  const tenant = await prisma.tenant.findUnique({ where: { id: ctx.tenantId }, select: { trialStartedAt: true } });
+  if (!tenant?.trialStartedAt) return null;
+  const settings = await ctx.db.tenantSettings.findFirst({ select: { onboarding: true, address: true, phone: true, email: true } });
+  const state = parse(settings?.onboarding);
+  if (state.hidden) return null;
+
+  const [teams, fieldUsers, orders] = await Promise.all([
+    ctx.db.team.count({ where: { deletedAt: null, name: { not: SAMPLE_TEAM_NAME } } }),
+    ctx.db.user.count({ where: { userRoles: { some: { role: { key: { in: ["technician", "team-lead"] } } } } } }),
+    ctx.db.workOrder.count({ where: { OR: [{ externalOrderNumber: null }, { NOT: { externalOrderNumber: { startsWith: SAMPLE_ORDER_PREFIX } } }] } }),
+  ]);
+  const auto: Record<OnboardingKey, boolean> = {
+    company: !!(settings?.address || settings?.phone || settings?.email),
+    team: teams > 0,
+    technician: fieldUsers > 0,
+    first_order: orders > 0,
+    mobile: false,
+  };
+  const items = ONBOARDING_ITEMS.map((i) => ({ key: i.key, href: i.href, auto: auto[i.key], done: auto[i.key] || state.done.includes(i.key) }));
+  return { items, completed: items.filter((i) => i.done).length, total: items.length };
+}
+
+async function write(ctx: ServiceCtx, next: OnboardingJson, before: OnboardingJson) {
+  await ctx.db.tenantSettings.update({ where: { tenantId: ctx.tenantId }, data: { onboarding: next } });
+  await writeAuditLog({ tenantId: ctx.tenantId, actorId: ctx.userId, action: "update", entity: "onboarding", entityId: ctx.tenantId, before, after: next });
+}
+
+async function load(ctx: ServiceCtx): Promise<OnboardingJson> {
+  const settings = await ctx.db.tenantSettings.findFirst({ select: { onboarding: true } });
+  if (!settings) throw new ServiceError("not_found", "tenant settings not found");
+  return parse(settings.onboarding);
+}
+
+export async function setOnboardingItem(ctx: ServiceCtx, key: string, done: boolean) {
+  assertCan(ctx, "tenant:manage");
+  if (!isOnboardingKey(key)) throw new ServiceError("invalid", "unknown_item", { field: "key" });
+  await assertTenantWritable(ctx.tenantId);
+  const before = await load(ctx);
+  const set = new Set(before.done);
+  if (done) set.add(key);
+  else set.delete(key);
+  await write(ctx, { ...before, done: [...set] }, before);
+}
+
+export async function setOnboardingHidden(ctx: ServiceCtx, hidden: boolean) {
+  assertCan(ctx, "tenant:manage");
+  await assertTenantWritable(ctx.tenantId);
+  const before = await load(ctx);
+  await write(ctx, { ...before, hidden }, before);
+}
diff --git a/src/server/services/trial/provision.ts b/src/server/services/trial/provision.ts
new file mode 100644
index 0000000..e28e4ad
--- /dev/null
+++ b/src/server/services/trial/provision.ts
@@ -0,0 +1,132 @@
+import { Prisma } from "@prisma/client";
+import { randomBytes } from "node:crypto";
+import { prisma } from "@/server/db";
+import { writeAuditLog } from "@/server/audit";
+import { generateCompliantPassword, hashPassword } from "@/server/password";
+import { provisionTenant } from "@/server/provision";
+import { MODULE_KEYS } from "@/lib/modules";
+import { trialEndInstant, todayKey } from "@/lib/trial/dates";
+import { daysMs, TRIAL_DELETION_GRACE_DAYS } from "./config";
+import { seedTrialSampleData } from "./sample-data";
+
+/**
+ * L15 Testphase: create a trial tenant (self-service signup after double opt-in, or platform wizard).
+ *
+ * The tenant row is CREATED here first (unique slug, trial fields) and only then completed by the
+ * idempotent `provisionTenant` (roles, admin, settings, modules). `provisionTenant` upserts by slug —
+ * reserving the slug with a plain `create` first guarantees that two concurrent signups with the same
+ * company name never end up in the same tenant.
+ */
+
+export function slugifyCompany(name: string): string {
+  const base = name
+    .toLowerCase()
+    .normalize("NFKD")
+    .replace(/[̀-ͯ]/g, "")
+    .replace(/ß/g, "ss")
+    .replace(/[^a-z0-9]+/g, "-")
+    .replace(/^-+|-+$/g, "")
+    .slice(0, 40)
+    .replace(/-+$/g, "");
+  return base.length >= 3 ? base : "betrieb";
+}
+
+export type ProvisionTrialInput = {
+  companyName: string;
+  sector?: string | null;
+  companySize?: string | null;
+  admin: { name: string; email: string; passwordHash?: string };
+  /** Last trial day YYYY-MM-DD (Berlin). */
+  endDateKey: string;
+  sampleData: boolean;
+  modules?: readonly string[];
+  source: "self_signup" | "platform";
+  actorId?: string | null;
+  now?: Date;
+};
+
+export type ProvisionTrialResult = {
+  tenantId: string;
+  tenantSlug: string;
+  adminUserId: string;
+  identityId: string;
+  identityCreated: boolean;
+  sampleData: "created" | "skipped" | "failed";
+};
+
+async function reserveTenant(input: ProvisionTrialInput, now: Date) {
+  const base = slugifyCompany(input.companyName);
+  const endsAt = trialEndInstant(input.endDateKey < todayKey(now) ? todayKey(now) : input.endDateKey);
+  const candidates = [base, ...Array.from({ length: 19 }, (_, i) => `${base}-${i + 2}`), `${base}-${randomBytes(3).toString("hex")}`, `${base}-${randomBytes(4).toString("hex")}`];
+  for (const slug of candidates) {
+    try {
+      return await prisma.tenant.create({
+        data: {
+          name: input.companyName,
+          slug,
+          sector: input.sector || null,
+          plan: "TRIAL",
+          trialSource: input.source,
+          trialStartedAt: now,
+          trialEndsAt: endsAt,
+          deletionDueAt: new Date(endsAt.getTime() + daysMs(TRIAL_DELETION_GRACE_DAYS)),
+          config: { trial: { companySize: input.companySize || null, source: input.source } },
+        },
+      });
+    } catch (err) {
+      if (err instanceof Prisma.PrismaClientKnownRequestError && err.code === "P2002") continue; // slug taken → next candidate
+      throw err;
+    }
+  }
+  throw new Error("no free tenant slug");
+}
+
+export async function provisionTrialTenant(input: ProvisionTrialInput): Promise<ProvisionTrialResult> {
+  const now = input.now ?? new Date();
+  const email = input.admin.email.trim().toLowerCase();
+  const tenant = await reserveTenant(input, now);
+  const modules = input.modules?.length ? input.modules.filter((m) => (MODULE_KEYS as readonly string[]).includes(m)) : [...MODULE_KEYS];
+
+  // Without a password (platform wizard): unusable random password + forced change; the admin sets
+  // their own password through the existing invitation link (actions/platform-users.ts pattern).
+  const passwordHash = input.admin.passwordHash ?? (await hashPassword(generateCompliantPassword()));
+  const provisioned = await provisionTenant(prisma, {
+    name: input.companyName,
+    slug: tenant.slug,
+    sector: input.sector || undefined,
+    admin: { email, name: input.admin.name, passwordHash, mustChangePassword: !input.admin.passwordHash },
+    modules,
+    actorId: input.actorId ?? null,
+  });
+
+  let sampleData: ProvisionTrialResult["sampleData"] = "skipped";
+  if (input.sampleData) {
+    try {
+      await seedTrialSampleData(tenant.id, provisioned.adminUserId);
+      sampleData = "created";
+    } catch (err) {
+      // sample data is a convenience — the trial itself must not fail because of it
+      console.error("[trial] sample data failed:", (err as Error).message);
+      sampleData = "failed";
+    }
+  }
+
+  await writeAuditLog({
+    tenantId: tenant.id,
+    scope: "platform",
+    actorId: input.actorId ?? undefined,
+    action: "create",
+    entity: "trial",
+    entityId: tenant.id,
+    after: { source: input.source, endDate: input.endDateKey, trialEndsAt: tenant.trialEndsAt, deletionDueAt: tenant.deletionDueAt, modules, sampleData },
+  });
+
+  return {
+    tenantId: tenant.id,
+    tenantSlug: tenant.slug,
+    adminUserId: provisioned.adminUserId,
+    identityId: provisioned.identityId,
+    identityCreated: provisioned.identityCreated,
+    sampleData,
+  };
+}
diff --git a/src/server/services/trial/sample-data.ts b/src/server/services/trial/sample-data.ts
new file mode 100644
index 0000000..dccbd89
--- /dev/null
+++ b/src/server/services/trial/sample-data.ts
@@ -0,0 +1,65 @@
+import { dbForTenant } from "@/server/db";
+import { ROLE_DEFS } from "@/server/rbac";
+import type { ServiceCtx } from "@/server/services/context";
+import { createCustomer } from "@/server/services/customers/customers";
+import { createSite } from "@/server/services/sites/sites";
+import { createTeam } from "@/server/services/teams/teams";
+import { ensureDefaultOrderTypes } from "@/server/services/work-orders/settings";
+import { createWorkOrder } from "@/server/services/work-orders/create";
+import { assignWorkOrder } from "@/server/services/work-orders/assign";
+
+/**
+ * L15 Testphase: compact sample data for a new trial tenant (customers, sites, one team, work
+ * orders in several states). Same approach as the demo seed (scripts/lib/demo-seed.ts): every
+ * record is created through the REAL domain services (numbering, audit, status history). The demo
+ * seed itself needs seven users with fixed roles and a PDF/photo pipeline; a trial tenant starts
+ * with ONE administrator, so this is a trimmed variant for exactly that situation.
+ * All names and addresses are fictitious.
+ */
+
+export const SAMPLE_ORDER_PREFIX = "BEISPIEL-";
+export const SAMPLE_TEAM_NAME = "Beispielteam";
+const SAMPLE_NOTE = "Beispieldaten der Testphase – können jederzeit gelöscht werden.";
+
+function inDays(days: number, hour: number): Date {
+  const d = new Date();
+  d.setDate(d.getDate() + days);
+  d.setHours(hour, 0, 0, 0);
+  return d;
+}
+
+export async function seedTrialSampleData(tenantId: string, adminUserId: string): Promise<{ customers: number; sites: number; teams: number; orders: number }> {
+  const ctx: ServiceCtx = { db: dbForTenant(tenantId), tenantId, userId: adminUserId, permissions: new Set<string>(ROLE_DEFS["tenant-admin"].permissions) };
+
+  await ensureDefaultOrderTypes(ctx.db, tenantId);
+  const types = new Map((await ctx.db.orderType.findMany({ select: { id: true, key: true } })).map((t) => [t.key, t.id]));
+  const type = (key: string) => types.get(key) ?? null;
+
+  const customers = [
+    { companyName: "Hausverwaltung Musterhof GmbH", street: "Lindenstraße", houseNumber: "12", postalCode: "10969", city: "Berlin", phone: "030 555 0100", email: "service@musterhof.example" },
+    { companyName: "Bäckerei Sonnenschein", street: "Marktplatz", houseNumber: "3", postalCode: "04109", city: "Leipzig", phone: "0341 555 0200" },
+    { firstName: "Erika", lastName: "Beispiel", street: "Am Wiesengrund", houseNumber: "7", postalCode: "30159", city: "Hannover", phone: "0511 555 0300", email: "erika.beispiel@example.org" },
+  ];
+  const customerIds: string[] = [];
+  for (const c of customers) {
+    customerIds.push((await createCustomer(ctx, { ...c, notes: SAMPLE_NOTE }, { acknowledgeDuplicates: true })).id);
+  }
+
+  const sites = [
+    { customerId: customerIds[0], name: "Wohnanlage Musterhof – Haus 1", street: "Lindenstraße", houseNumber: "12a", postalCode: "10969", city: "Berlin", accessNotes: "Schlüssel beim Hausmeister (Erdgeschoss links)." },
+    { customerId: customerIds[1], name: "Backstube", street: "Marktplatz", houseNumber: "3", postalCode: "04109", city: "Leipzig", accessNotes: "Lieferanteneingang hinten, ab 5 Uhr besetzt." },
+    { customerId: customerIds[2], name: "Einfamilienhaus Am Wiesengrund", street: "Am Wiesengrund", houseNumber: "7", postalCode: "30159", city: "Hannover", accessNotes: "Kundin ist vormittags zu Hause." },
+  ];
+  const siteIds: string[] = [];
+  for (const s of sites) siteIds.push((await createSite(ctx, s)).id);
+
+  const team = await createTeam(ctx, { name: SAMPLE_TEAM_NAME, leaderUserId: adminUserId, members: [{ userId: adminUserId }], notes: SAMPLE_NOTE });
+
+  await createWorkOrder(ctx, { title: "Heizungswartung vor der Heizperiode", customerId: customerIds[0], siteId: siteIds[0], orderTypeId: type("wartung"), status: "draft", externalOrderNumber: `${SAMPLE_ORDER_PREFIX}01`, plannedStart: inDays(5, 8), plannedEnd: inDays(5, 12), description: SAMPLE_NOTE });
+  await createWorkOrder(ctx, { title: "Wasserenthärtung prüfen", customerId: customerIds[1], siteId: siteIds[1], orderTypeId: type("wartung"), status: "planned", externalOrderNumber: `${SAMPLE_ORDER_PREFIX}02`, plannedStart: inDays(2, 7), plannedEnd: inDays(2, 9), materials: [{ name: "Filterkartusche", plannedQuantity: 1, unit: "Stk" }] });
+  const assigned = await createWorkOrder(ctx, { title: "Heizkörper im Wohnzimmer tauschen", customerId: customerIds[2], siteId: siteIds[2], orderTypeId: type("montage"), status: "planned", externalOrderNumber: `${SAMPLE_ORDER_PREFIX}03`, plannedStart: inDays(1, 8), plannedEnd: inDays(1, 15), materials: [{ name: "Flachheizkörper 22/600/1000", plannedQuantity: 1, unit: "Stk" }] });
+  await assignWorkOrder(ctx, { workOrderId: assigned.id, teamId: team.id, userIds: [adminUserId] });
+  await createWorkOrder(ctx, { title: "Undichte Leitung im Keller", customerId: customerIds[0], siteId: siteIds[0], orderTypeId: type("reparatur"), priority: "high", status: "review_required", externalOrderNumber: `${SAMPLE_ORDER_PREFIX}04`, description: "Aus einer Kundenmail übernommen – bitte prüfen." });
+
+  return { customers: customerIds.length, sites: siteIds.length, teams: 1, orders: 4 };
+}
diff --git a/src/server/services/trial/signup.ts b/src/server/services/trial/signup.ts
new file mode 100644
index 0000000..1e82142
--- /dev/null
+++ b/src/server/services/trial/signup.ts
@@ -0,0 +1,184 @@
+import { createHash, createHmac, randomBytes } from "node:crypto";
+import { prisma } from "@/server/db";
+import { writePlatformAudit } from "@/server/audit";
+import { hashPassword } from "@/server/password";
+import { absoluteUrl } from "@/server/mail/config";
+import { enqueueMail } from "@/server/mail/service";
+import { formatWhen, normalizeLocale } from "@/server/mail/templates";
+import { formatDateKey, trialBounds, type TrialBounds } from "@/lib/trial/dates";
+import { normalizeTrialValues, TRIAL_STEPS, validateTrialSignup, validateTrialStep, type FieldErrors, type TrialStep } from "@/lib/trial/signup";
+import { trialMaxDays, TRIAL_DEFAULT_DAYS, TRIAL_SIGNUP_TOKEN_TTL_MS } from "./config";
+import { provisionTrialTenant } from "./provision";
+
+/**
+ * L15 Testphase: public self-service signup with double opt-in.
+ *
+ * - Nothing is provisioned before the e-mail address is confirmed; the pending signup lives in
+ *   `TrialSignup` (platform table) with the Argon2id(+pepper) password hash and the SHA-256 of the
+ *   link token — never the raw password/token. The IP is stored only as HMAC.
+ * - Enumeration protection: an address that already has an account gets exactly the same response
+ *   (and the same work: the password is hashed in both branches), but a hint mail instead of a
+ *   confirmation link.
+ * - Rate limits and the honeypot check live in the action adapter (src/server/actions/trial-signup.ts
+ *   via ./abuse.ts), so this service stays testable without a request.
+ */
+
+export type SendMail = typeof enqueueMail;
+
+export type SignupResult = { status: "sent" } | { status: "invalid"; errors: FieldErrors };
+
+export type ConfirmResult =
+  | { status: "ok"; tenantId: string; tenantSlug: string; identityId: string }
+  | { status: "invalid" }
+  | { status: "expired" };
+
+export function hashSignupToken(raw: string): string {
+  return createHash("sha256").update(raw).digest("hex");
+}
+
+export function hashIp(ip: string | null | undefined): string | null {
+  if (!ip) return null;
+  return createHmac("sha256", process.env.AUTH_SECRET ?? "craftvia-trial").update(ip).digest("hex");
+}
+
+export function currentTrialBounds(now: Date = new Date()): TrialBounds {
+  return trialBounds(now, trialMaxDays(), TRIAL_DEFAULT_DAYS);
+}
+
+/** Server-side validation of one wizard step (no writes). Unknown step → form error. */
+export function checkTrialStep(step: string, raw: unknown, now: Date = new Date()): FieldErrors {
+  if (!(TRIAL_STEPS as readonly string[]).includes(step)) return { _form: "invalid_request" };
+  const values = normalizeTrialValues(raw);
+  if (!values) return { _form: "invalid_request" };
+  return validateTrialStep(step as TrialStep, values, currentTrialBounds(now));
+}
+
+export async function submitTrialSignup(
+  raw: unknown,
+  opts: { ip?: string | null; now?: Date; locale?: string | null; sendMail?: SendMail } = {},
+): Promise<SignupResult> {
+  const now = opts.now ?? new Date();
+  const send = opts.sendMail ?? enqueueMail;
+  const locale = normalizeLocale(opts.locale);
+  const values = normalizeTrialValues(raw);
+  if (!values) return { status: "invalid", errors: { _form: "invalid_request" } };
+  // Honeypot filled → pretend success, do nothing.
+  if (values.website.trim() !== "") return { status: "sent" };
+
+  const errors = validateTrialSignup(values, currentTrialBounds(now));
+  if (Object.keys(errors).length > 0) return { status: "invalid", errors };
+
+  // Hash in BOTH branches — equal work, no timing oracle for existing addresses.
+  const passwordHash = await hashPassword(values.password);
+  const existing = await prisma.identity.findUnique({ where: { email: values.email }, select: { id: true } });
+  if (existing) {
+    const hourBucket = Math.floor(now.getTime() / 3_600_000);
+    await send({
+      template: "trial_existing_account",
+      to: values.email,
+      tenantId: null,
+      locale,
+      vars: { name: values.adminName, loginUrl: absoluteUrl("/login"), resetUrl: absoluteUrl("/forgot-password") },
+      // at most one hint mail per address per hour
+      dedupeKey: `trial_existing:${hashSignupToken(values.email)}:${hourBucket}`,
+    });
+    await writePlatformAudit({ action: "denied", entity: "trial_signup", after: { reason: "existing_account" } });
+    return { status: "sent" };
+  }
+
+  const rawToken = randomBytes(32).toString("base64url");
+  const expiresAt = new Date(now.getTime() + TRIAL_SIGNUP_TOKEN_TTL_MS);
+  // A new request makes older open links of the same address useless.
+  await prisma.trialSignup.updateMany({ where: { email: values.email, status: "pending" }, data: { status: "superseded", passwordHash: "" } });
+  const signup = await prisma.trialSignup.create({
+    data: {
+      companyName: values.companyName,
+      sector: values.sector || null,
+      companySize: values.companySize || null,
+      adminName: values.adminName,
+      email: values.email,
+      passwordHash,
+      trialEndDate: values.trialEndDate,
+      sampleData: values.sampleData,
+      modules: values.modules,
+      locale,
+      tokenHash: hashSignupToken(rawToken),
+      expiresAt,
+      ipHash: hashIp(opts.ip),
+      acceptedTermsAt: now,
+    },
+    select: { id: true },
+  });
+
+  await send({
+    template: "trial_confirm",
+    to: values.email,
+    tenantId: null,
+    locale,
+    vars: {
+      name: values.adminName,
+      companyName: values.companyName,
+      trialEnd: formatDateKey(values.trialEndDate, locale),
+      actionUrl: absoluteUrl(`/testen/bestaetigen?token=${encodeURIComponent(rawToken)}`),
+      expires: formatWhen(expiresAt, locale),
+    },
+  });
+  await writePlatformAudit({ action: "create", entity: "trial_signup", entityId: signup.id, after: { trialEndDate: values.trialEndDate, sampleData: values.sampleData, modules: values.modules.length } });
+  return { status: "sent" };
+}
+
+/** Shows the pending signup behind a link (without consuming it). */
+export async function peekTrialSignup(rawToken: string, now: Date = new Date()) {
+  if (!rawToken || rawToken.length > 200) return null;
+  const row = await prisma.trialSignup.findUnique({
+    where: { tokenHash: hashSignupToken(rawToken) },
+    select: { status: true, expiresAt: true, companyName: true, trialEndDate: true, sampleData: true },
+  });
+  if (!row || row.status !== "pending" || row.expiresAt <= now) return null;
+  return { companyName: row.companyName, trialEndDate: row.trialEndDate, sampleData: row.sampleData };
+}
+
+/** Consumes the link (single use, 24 h) and provisions the trial tenant. */
+export async function confirmTrialSignup(rawToken: string, opts: { now?: Date } = {}): Promise<ConfirmResult> {
+  const now = opts.now ?? new Date();
+  if (!rawToken || rawToken.length > 200) return { status: "invalid" };
+  const row = await prisma.trialSignup.findUnique({ where: { tokenHash: hashSignupToken(rawToken) } });
+  if (!row || row.status !== "pending") return { status: "invalid" };
+  if (row.expiresAt <= now) {
+    await prisma.trialSignup.updateMany({ where: { id: row.id, status: "pending" }, data: { status: "expired", passwordHash: "" } });
+    return { status: "expired" };
+  }
+  // Claim: only one of several parallel clicks wins.
+  const claim = await prisma.trialSignup.updateMany({ where: { id: row.id, status: "pending" }, data: { status: "confirming" } });
+  if (claim.count !== 1) return { status: "invalid" };
+
+  // The address may have got an account in the meantime (invitation, other signup).
+  if (await prisma.identity.findUnique({ where: { email: row.email }, select: { id: true } })) {
+    await prisma.trialSignup.update({ where: { id: row.id }, data: { status: "existing_account", passwordHash: "" } });
+    await writePlatformAudit({ action: "denied", entity: "trial_signup", entityId: row.id, after: { reason: "existing_account" } });
+    return { status: "invalid" };
+  }
+
+  try {
+    const result = await provisionTrialTenant({
+      companyName: row.companyName,
+      sector: row.sector,
+      companySize: row.companySize,
+      admin: { name: row.adminName, email: row.email, passwordHash: row.passwordHash },
+      endDateKey: row.trialEndDate,
+      sampleData: row.sampleData,
+      modules: row.modules,
+      source: "self_signup",
+      now,
+    });
+    await prisma.trialSignup.update({
+      where: { id: row.id },
+      data: { status: "confirmed", confirmedAt: now, provisionedTenantId: result.tenantId, passwordHash: "" },
+    });
+    await writePlatformAudit({ action: "update", entity: "trial_signup", entityId: row.id, after: { status: "confirmed", tenantId: result.tenantId } });
+    return { status: "ok", tenantId: result.tenantId, tenantSlug: result.tenantSlug, identityId: result.identityId };
+  } catch (err) {
+    await prisma.trialSignup.update({ where: { id: row.id }, data: { status: "failed", passwordHash: "" } });
+    throw err;
+  }
+}
diff --git a/src/server/services/trial/state.ts b/src/server/services/trial/state.ts
new file mode 100644
index 0000000..5af125c
--- /dev/null
+++ b/src/server/services/trial/state.ts
@@ -0,0 +1,100 @@
+import { prisma } from "@/server/db";
+import { ServiceError } from "@/server/services/context";
+import { diffDayKeys, todayKey, trialEndDateKey } from "@/lib/trial/dates";
+import { TRIAL_BANNER_DAYS } from "./config";
+
+/**
+ * L15 Testphase: lifecycle state of a tenant and the CENTRAL write lock.
+ *
+ * After the chosen end the trial tenant is read-only: every mutation path calls
+ * `assertTenantWritable(tenantId)` (moduleGuard, requireApiContext for non-GET /api/v1 requests,
+ * backoffice upload route, settings/user administration). Reads, file downloads, PDFs, the data
+ * export and the login stay possible. The lock depends only on `trialEndsAt` — not on the daily
+ * job — so it applies to the second.
+ *
+ * `Tenant` is a platform table (no tenant_id / RLS); it is read via the owner client by id.
+ */
+
+export type TenantTrialRow = {
+  plan: "FULL" | "TRIAL";
+  trialStartedAt: Date | null;
+  trialEndsAt: Date | null;
+  convertedAt: Date | null;
+  readOnlySince: Date | null;
+  deletionDueAt: Date | null;
+  trialDeletedAt?: Date | null;
+};
+
+export type TrialState = {
+  isTrial: boolean;
+  endsAt: Date | null;
+  /** Last trial day (YYYY-MM-DD, Berlin). */
+  endDateKey: string | null;
+  /** Calendar days until the last trial day (0 = ends today); null without trial. */
+  daysLeft: number | null;
+  expired: boolean;
+  readOnly: boolean;
+  deletionDueAt: Date | null;
+  /** Show "trial ends in X days" (from TRIAL_BANNER_DAYS on). */
+  showCountdown: boolean;
+};
+
+export const TRIAL_SELECT = {
+  plan: true,
+  trialStartedAt: true,
+  trialEndsAt: true,
+  convertedAt: true,
+  readOnlySince: true,
+  deletionDueAt: true,
+  trialDeletedAt: true,
+} as const;
+
+export function computeTrialState(row: TenantTrialRow | null, now: Date = new Date()): TrialState {
+  if (!row || row.plan !== "TRIAL" || !row.trialEndsAt) {
+    return { isTrial: false, endsAt: null, endDateKey: null, daysLeft: null, expired: false, readOnly: false, deletionDueAt: null, showCountdown: false };
+  }
+  const endDateKey = trialEndDateKey(row.trialEndsAt);
+  const expired = now.getTime() >= row.trialEndsAt.getTime();
+  const daysLeft = diffDayKeys(todayKey(now), endDateKey);
+  return {
+    isTrial: true,
+    endsAt: row.trialEndsAt,
+    endDateKey,
+    daysLeft,
+    expired,
+    readOnly: expired,
+    deletionDueAt: row.deletionDueAt,
+    showCountdown: !expired && daysLeft <= TRIAL_BANNER_DAYS,
+  };
+}
+
+export async function getTrialState(tenantId: string, now: Date = new Date()): Promise<TrialState> {
+  const row = await prisma.tenant.findUnique({ where: { id: tenantId }, select: TRIAL_SELECT });
+  return computeTrialState(row, now);
+}
+
+/** Plain-text reason for API clients and legacy action forms that show `err.message`-style texts. */
+export const TRIAL_READ_ONLY_MESSAGE = "Testphase abgelaufen – nur Lesezugriff. Export und Downloads bleiben möglich.";
+
+/** `blocked trial_expired` — mapped to HTTP 422 by respond.ts, shown as plain text by the UI. */
+export class TrialExpiredError extends ServiceError {
+  constructor(deletionDueAt: Date | null) {
+    super("blocked", "trial_expired", {
+      reason: "trial_expired",
+      readOnly: true,
+      deletionDueAt: deletionDueAt?.toISOString() ?? null,
+      message: TRIAL_READ_ONLY_MESSAGE,
+    });
+    this.name = "TrialExpiredError";
+  }
+}
+
+export function isTrialExpiredError(err: unknown): boolean {
+  return err instanceof ServiceError && err.code === "blocked" && err.message === "trial_expired";
+}
+
+/** Throws `TrialExpiredError` when the tenant is an expired, unconverted trial. */
+export async function assertTenantWritable(tenantId: string, now: Date = new Date()): Promise<void> {
+  const state = await getTrialState(tenantId, now);
+  if (state.readOnly) throw new TrialExpiredError(state.deletionDueAt);
+}
diff --git a/src/server/services/trial/storage-purge.ts b/src/server/services/trial/storage-purge.ts
new file mode 100644
index 0000000..21b87f7
--- /dev/null
+++ b/src/server/services/trial/storage-purge.ts
@@ -0,0 +1,33 @@
+import { DeleteObjectsCommand, ListObjectsV2Command, S3Client } from "@aws-sdk/client-s3";
+
+/**
+ * L15 Testphase: remove ALL objects of a tenant from the document/upload bucket (`<tenantId>/…`).
+ *
+ * The upload adapter (src/server/storage/adapter.ts, foundation) only offers put/get; the DSGVO
+ * offboarding removes `<tenantId>/uploads/` from the BACKUP store, which is not necessarily the
+ * upload bucket (backup target can be local or a different bucket). Same S3_* configuration as the
+ * upload adapter; without S3 (stub storage) there are no bytes to delete.
+ */
+export async function purgeTenantObjects(tenantId: string): Promise<number> {
+  if (!/^[A-Za-z0-9_-]{8,}$/.test(tenantId)) throw new Error("purgeTenantObjects: invalid tenant id");
+  const endpoint = process.env.S3_ENDPOINT?.trim();
+  const accessKeyId = process.env.S3_ACCESS_KEY?.trim();
+  const secretAccessKey = process.env.S3_SECRET_KEY?.trim();
+  const bucket = process.env.S3_BUCKET?.trim();
+  if (!endpoint || !accessKeyId || !secretAccessKey || !bucket) return 0;
+
+  const client = new S3Client({ endpoint, region: process.env.S3_REGION?.trim() || "us-east-1", forcePathStyle: true, credentials: { accessKeyId, secretAccessKey } });
+  const prefix = `${tenantId}/`;
+  let removed = 0;
+  let token: string | undefined;
+  do {
+    const page = await client.send(new ListObjectsV2Command({ Bucket: bucket, Prefix: prefix, ContinuationToken: token }));
+    const keys = (page.Contents ?? []).map((o) => o.Key).filter((k): k is string => !!k && k.startsWith(prefix));
+    if (keys.length) {
+      await client.send(new DeleteObjectsCommand({ Bucket: bucket, Delete: { Objects: keys.map((Key) => ({ Key })), Quiet: true } }));
+      removed += keys.length;
+    }
+    token = page.IsTruncated ? page.NextContinuationToken : undefined;
+  } while (token);
+  return removed;
+}