diff --git a/Dockerfile b/Dockerfile
index c4ae678..1c50886 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -103,3 +103,27 @@ CMD ["node", "server.js"]
 # GARAGE_RPC_SECRET/GARAGE_ADMIN_TOKEN); nur die secret-freie Basiskonfig wird kopiert.
 FROM dxflrs/garage:v1.2.0 AS garage
 COPY deploy/garage.toml /etc/garage.toml
+
+# --- Worker-Stage (Vorschlag Lane L5 Berichte): Craftvia-Job-Worker inkl. Chromium für PDF ---
+# ARCHITEKTUR §1: HTML → PDF läuft über playwright-core + Chromium NUR im Worker, nie im App-Container.
+# Debian-Chromium aus dem Paketspiegel statt Playwright-Download (reproduzierbar, Updates über das Base-Image);
+# render.ts nutzt PDF_CHROMIUM_PATH. fonts-dejavu/-liberation als Fallback, Inter wird eingebettet (src/app/fonts).
+# tsx + src/messages/prisma werden wie in der migrate-Stage zur Laufzeit gebraucht (Worker läuft über tsx).
+FROM node:22.14.0-slim AS worker
+WORKDIR /app
+ENV NODE_ENV=production
+ENV PDF_CHROMIUM_PATH=/usr/bin/chromium
+RUN apt-get update && apt-get install -y --no-install-recommends openssl ca-certificates chromium fonts-dejavu-core fonts-liberation \
+ && rm -rf /var/lib/apt/lists/*
+COPY --from=deps /app/node_modules ./node_modules
+COPY package.json package-lock.json prisma.config.ts tsconfig.json ./
+COPY prisma ./prisma
+COPY scripts ./scripts
+COPY src ./src
+COPY messages ./messages
+ENV DATABASE_URL="postgresql://build:build@localhost:5432/build?schema=public"
+RUN npx prisma generate
+RUN groupadd --system --gid 1001 app \
+ && useradd --system --uid 1001 --gid app --home-dir /app app
+USER app
+CMD ["npx", "tsx", "scripts/craftvia-worker.ts"]
diff --git a/package-lock.json b/package-lock.json
index 98e7df4..62be9a7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,11 @@
 {
-  "name": "isms-tool",
+  "name": "craftvia",
   "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "isms-tool",
+      "name": "craftvia",
       "version": "0.1.0",
       "dependencies": {
         "@anthropic-ai/sdk": "^0.115.0",
@@ -27,6 +27,7 @@
         "next-intl": "^4.13.1",
         "nodemailer": "^8.0.11",
         "otplib": "^13.4.1",
+        "playwright-core": "^1.63.0",
         "qrcode": "^1.5.4",
         "react": "19.2.4",
         "react-dom": "19.2.4",
@@ -11179,6 +11180,18 @@
         "node": ">=4"
       }
     },
+    "node_modules/playwright-core": {
+      "version": "1.63.0",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.63.0.tgz",
+      "integrity": "sha512-rYCsBF/M5HjUch52bbtVONEFjv6Xu8sm8h72dNlR5bzIE1fvC/bxgspzkjSfU+MweEMmPM8KJebG6nnyxo5mCg==",
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
     "node_modules/pngjs": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-5.0.0.tgz",
diff --git a/package.json b/package.json
index 6e47ce7..50fd72b 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
     "next-intl": "^4.13.1",
     "nodemailer": "^8.0.11",
     "otplib": "^13.4.1",
+    "playwright-core": "^1.63.0",
     "qrcode": "^1.5.4",
     "react": "19.2.4",
     "react-dom": "19.2.4",
diff --git a/src/lib/reports/action-state.ts b/src/lib/reports/action-state.ts
new file mode 100644
index 0000000..c86c423
--- /dev/null
+++ b/src/lib/reports/action-state.ts
@@ -0,0 +1,11 @@
+import type { CompletionBlocker } from "@/lib/work-orders/status";
+
+/** Result of report server actions (client-safe; "use server" files may only export async functions). */
+export type ReportActionErrorCode = "generic" | "not_found" | "forbidden" | "conflict" | "invalid" | "blocked";
+
+export type ReportActionState =
+  | { status: "idle" }
+  | { status: "ok"; reportId?: string; at: number }
+  | { status: "error"; code: ReportActionErrorCode; field?: string; blockers?: CompletionBlocker[]; at: number };
+
+export const IDLE: ReportActionState = { status: "idle" };
diff --git a/src/lib/reports/content.ts b/src/lib/reports/content.ts
new file mode 100644
index 0000000..a12ce74
--- /dev/null
+++ b/src/lib/reports/content.ts
@@ -0,0 +1,194 @@
+import { z } from "zod";
+
+/**
+ * Report content snapshot (ARCHITEKTUR §4.7, Spec §16.2/§17.2). Client-safe.
+ *
+ * Built from the database by src/server/services/reports/build-content.ts when a report is
+ * created, refreshed on submit/approve and frozen once the report is approved. The editable
+ * free-text block (`texts`) is owned by the technician and survives every refresh.
+ */
+
+export const REPORT_TYPES = ["daily", "completion"] as const;
+export type ReportType = (typeof REPORT_TYPES)[number];
+
+export const REPORT_STATUSES = ["draft", "submitted", "team_approved", "approved", "rejected", "superseded"] as const;
+export type ReportStatus = (typeof REPORT_STATUSES)[number];
+
+/** Statuses in which the technician may still edit texts / capture a signature. */
+export const REPORT_EDITABLE: readonly ReportStatus[] = ["draft", "rejected"];
+/** Statuses waiting for a reviewer ("Zur Prüfung"). */
+export const REPORT_IN_REVIEW: readonly ReportStatus[] = ["submitted", "team_approved"];
+
+/** Badge tone per report status — always rendered together with the status text. */
+export const REPORT_STATUS_TONE: Record<ReportStatus, "mut" | "info" | "warn" | "ok" | "risk"> = {
+  draft: "mut",
+  submitted: "info",
+  team_approved: "info",
+  approved: "ok",
+  rejected: "risk",
+  superseded: "mut",
+};
+
+export const SIGNATURE_OUTCOMES = ["signed", "customer_absent", "refused", "later", "not_required"] as const;
+export type SignatureOutcome = (typeof SIGNATURE_OUTCOMES)[number];
+/** Outcomes that require a written reason (Spec §18.2). */
+export const SIGNATURE_REASON_REQUIRED: readonly SignatureOutcome[] = ["customer_absent", "refused", "later"];
+
+export const TIME_ENTRY_TYPES = ["travel", "work", "break", "material_procurement", "return_travel", "interruption"] as const;
+export const PHOTO_PHASES = ["before", "during", "after"] as const;
+export const MATERIAL_USAGE_STATUSES = ["fully_used", "partially_used", "not_used", "additional"] as const;
+
+/** Editable free-text fields (technician / Lotse draft). */
+export const REPORT_TEXT_FIELDS = ["workPerformed", "deviations", "additionalWork", "problems", "openItems", "nextSteps", "hints"] as const;
+export type ReportTextField = (typeof REPORT_TEXT_FIELDS)[number];
+/** Text fields that must not be empty before submit ("Pflichtangaben"). */
+export const REPORT_REQUIRED_TEXTS: Record<ReportType, readonly ReportTextField[]> = {
+  daily: ["workPerformed"],
+  completion: ["workPerformed"],
+};
+
+export const TEXT_MAX = 10_000;
+
+const isoDate = z.string().regex(/^\d{4}-\d{2}-\d{2}$/);
+const isoDateTime = z.string().datetime({ offset: true });
+const nullableText = z.string().max(2_000).nullable();
+
+export const addressSchema = z.object({
+  line1: nullableText,
+  line2: nullableText,
+});
+
+export const reportTextsSchema = z.object({
+  workPerformed: z.string().max(TEXT_MAX),
+  deviations: z.string().max(TEXT_MAX),
+  additionalWork: z.string().max(TEXT_MAX),
+  problems: z.string().max(TEXT_MAX),
+  openItems: z.string().max(TEXT_MAX),
+  nextSteps: z.string().max(TEXT_MAX),
+  hints: z.string().max(TEXT_MAX),
+});
+export type ReportTexts = z.infer<typeof reportTextsSchema>;
+
+export const materialLineSchema = z.object({
+  usageId: z.string().nullable(),
+  planId: z.string().nullable(),
+  name: z.string(),
+  articleNumber: nullableText,
+  plannedQuantity: z.string().nullable(),
+  actualQuantity: z.string().nullable(),
+  unit: z.string(),
+  status: z.enum(MATERIAL_USAGE_STATUSES).nullable(),
+  /** planned vs. actual differs (quantity or status) */
+  deviation: z.boolean(),
+  deviationReason: nullableText,
+  notes: nullableText,
+  /** false = planned material without any documented usage */
+  documented: z.boolean(),
+});
+export type MaterialLine = z.infer<typeof materialLineSchema>;
+
+export const photoLineSchema = z.object({
+  photoId: z.string(),
+  documentId: z.string(),
+  phase: z.enum(PHOTO_PHASES).nullable(),
+  comment: nullableText,
+  requirement: nullableText,
+  takenAt: isoDateTime,
+});
+export type PhotoLine = z.infer<typeof photoLineSchema>;
+
+export const timeLineSchema = z.object({
+  userId: z.string(),
+  name: z.string(),
+  type: z.enum(TIME_ENTRY_TYPES),
+  minutes: z.number().int().nonnegative(),
+});
+
+export const signatureBlockSchema = z.object({
+  outcome: z.enum(SIGNATURE_OUTCOMES),
+  signerName: nullableText,
+  signerRole: nullableText,
+  signedAt: isoDateTime,
+  reason: nullableText,
+  confirmationText: nullableText,
+  imageDocumentId: z.string().nullable(),
+  capturedByName: nullableText,
+});
+export type SignatureBlock = z.infer<typeof signatureBlockSchema>;
+
+export const reportContentSchema = z.object({
+  schemaVersion: z.literal(1),
+  type: z.enum(REPORT_TYPES),
+  reportNumber: z.string(),
+  version: z.number().int().positive(),
+  reportDate: isoDate,
+  generatedAt: isoDateTime,
+  tenant: z.object({
+    name: z.string(),
+    address: nullableText,
+    phone: nullableText,
+    email: nullableText,
+    logoDocumentId: z.string().nullable(),
+  }),
+  customer: z.object({
+    id: z.string(),
+    number: nullableText,
+    name: z.string(),
+    address: addressSchema,
+  }),
+  site: z.object({ id: z.string(), name: z.string(), address: addressSchema }).nullable(),
+  contact: z.object({ name: z.string(), role: nullableText, phone: nullableText, email: nullableText }).nullable(),
+  workOrder: z.object({
+    id: z.string(),
+    number: z.string(),
+    externalOrderNumber: nullableText,
+    title: z.string(),
+    description: z.string().nullable(),
+    scope: z.string().nullable(),
+    orderType: nullableText,
+    signatureRequired: z.boolean(),
+  }),
+  /** Dates (YYYY-MM-DD, tenant time zone) with documented work; daily report = [reportDate]. */
+  workDates: z.array(isoDate),
+  staff: z.array(z.object({ userId: z.string(), name: z.string() })),
+  time: z.object({
+    entries: z.array(timeLineSchema),
+    totalsByType: z.record(z.string(), z.number().int().nonnegative()),
+    totalsByPerson: z.array(z.object({ userId: z.string(), name: z.string(), minutes: z.number().int().nonnegative() })),
+    /** billable total = all types except break */
+    totalMinutes: z.number().int().nonnegative(),
+    /** true if an entry was still running while the snapshot was built */
+    hasRunningEntries: z.boolean(),
+  }),
+  texts: reportTextsSchema,
+  materials: z.object({
+    used: z.array(materialLineSchema),
+    notUsed: z.array(materialLineSchema),
+    additional: z.array(materialLineSchema),
+  }),
+  photos: z.array(photoLineSchema),
+  checklist: z.array(z.object({ label: z.string(), required: z.boolean(), checked: z.boolean(), comment: nullableText })),
+  signature: signatureBlockSchema.nullable(),
+  technician: z.object({ userId: z.string(), name: z.string() }).nullable(),
+});
+
+export type ReportContent = z.infer<typeof reportContentSchema>;
+
+export function emptyTexts(): ReportTexts {
+  return { workPerformed: "", deviations: "", additionalWork: "", problems: "", openItems: "", nextSteps: "", hints: "" };
+}
+
+/** Parse stored JSON; throws on schema drift so broken snapshots never render silently. */
+export function parseReportContent(json: unknown): ReportContent {
+  return reportContentSchema.parse(json);
+}
+
+/** Missing required text fields for submit. */
+export function missingRequiredTexts(content: Pick<ReportContent, "type" | "texts">): ReportTextField[] {
+  return REPORT_REQUIRED_TEXTS[content.type].filter((f) => !content.texts[f].trim());
+}
+
+/** "7 h 05 min" style duration without locale dependency (labels come from messages). */
+export function splitMinutes(minutes: number): { hours: number; minutes: number } {
+  return { hours: Math.floor(minutes / 60), minutes: minutes % 60 };
+}
diff --git a/src/lib/reports/dates.ts b/src/lib/reports/dates.ts
new file mode 100644
index 0000000..033001f
--- /dev/null
+++ b/src/lib/reports/dates.ts
@@ -0,0 +1,46 @@
+/**
+ * Calendar-day helpers in the tenant time zone (client-safe, no dependencies).
+ * A daily report covers [start of reportDate, start of next day) in `timeZone`.
+ */
+
+/** Offset (ms) of `timeZone` relative to UTC at the given instant. */
+function tzOffsetMs(instant: Date, timeZone: string): number {
+  const parts = new Intl.DateTimeFormat("en-US", {
+    timeZone,
+    hourCycle: "h23",
+    year: "numeric",
+    month: "2-digit",
+    day: "2-digit",
+    hour: "2-digit",
+    minute: "2-digit",
+    second: "2-digit",
+  }).formatToParts(instant);
+  const get = (t: string) => Number(parts.find((p) => p.type === t)?.value);
+  const asUtc = Date.UTC(get("year"), get("month") - 1, get("day"), get("hour"), get("minute"), get("second"));
+  return asUtc - Math.floor(instant.getTime() / 1000) * 1000;
+}
+
+/** YYYY-MM-DD of an instant in `timeZone`. */
+export function localDateKey(instant: Date, timeZone: string): string {
+  return new Intl.DateTimeFormat("en-CA", { timeZone, year: "numeric", month: "2-digit", day: "2-digit" }).format(instant);
+}
+
+/** UTC instants [start, end) of a local calendar day. */
+export function dayWindow(dateKey: string, timeZone: string): { start: Date; end: Date } {
+  const [y, m, d] = dateKey.split("-").map(Number);
+  const startGuess = Date.UTC(y, m - 1, d);
+  const endGuess = Date.UTC(y, m - 1, d + 1);
+  const start = new Date(startGuess - tzOffsetMs(new Date(startGuess), timeZone));
+  const end = new Date(endGuess - tzOffsetMs(new Date(endGuess), timeZone));
+  return { start, end };
+}
+
+/** Date-only column value (Prisma @db.Date) for a YYYY-MM-DD key. */
+export function dateKeyToDbDate(dateKey: string): Date {
+  return new Date(`${dateKey}T00:00:00.000Z`);
+}
+
+/** YYYY-MM-DD from a Prisma @db.Date value. */
+export function dbDateToKey(d: Date): string {
+  return d.toISOString().slice(0, 10);
+}
diff --git a/src/server/jobs/processors/index.ts b/src/server/jobs/processors/index.ts
index 8727bd4..20fe017 100644
--- a/src/server/jobs/processors/index.ts
+++ b/src/server/jobs/processors/index.ts
@@ -10,7 +10,7 @@ export type JobProcessor = (payload: JobPayload) => Promise<void>;
 export const PROCESSORS: Partial<Record<JobQueueName, () => Promise<JobProcessor>>> = {
   // lane-imports:   "import-extraction": () => import("./import-extraction").then((m) => m.process),
   // lane-lotse:     "transcription": () => import("./transcription").then((m) => m.process),
-  // lane-reports:   "report-pdf": () => import("./report-pdf").then((m) => m.process),
+  "report-pdf": () => import(/* turbopackIgnore: true */ "./report-pdf").then((m) => m.process), // worker-only (react-dom/server + Chromium), kept out of the app bundle
   // lane-field:     "image-derivatives": () => import("./image-derivatives").then((m) => m.process),
 };
 
diff --git a/src/server/jobs/processors/report-pdf.ts b/src/server/jobs/processors/report-pdf.ts
new file mode 100644
index 0000000..c21f140
--- /dev/null
+++ b/src/server/jobs/processors/report-pdf.ts
@@ -0,0 +1,19 @@
+import { dbForTenant } from "@/server/db";
+import type { ServiceCtx } from "@/server/services/context";
+import { generateReportPdf } from "@/server/services/reports/pdf";
+import type { JobPayload } from "../queues";
+
+/**
+ * Queue "report-pdf": renders the PDF of an approved report (lane L5).
+ * System context: tenant-bound db, read access to all reports of the tenant — nothing else.
+ */
+export async function process(payload: JobPayload): Promise<void> {
+  const ctx: ServiceCtx = {
+    db: dbForTenant(payload.tenantId),
+    tenantId: payload.tenantId,
+    userId: payload.actorId ?? "system",
+    permissions: new Set(["report:read", "work_order:read_all", "document:read_internal"]),
+  };
+  const res = await generateReportPdf(ctx, payload.entityId);
+  console.info(`[report-pdf] ${payload.entityId}: ${res.skipped ? "already rendered" : `stored ${res.documentId}`}`);
+}
diff --git a/src/server/pdf/render.ts b/src/server/pdf/render.ts
new file mode 100644
index 0000000..547f421
--- /dev/null
+++ b/src/server/pdf/render.ts
@@ -0,0 +1,85 @@
+import { existsSync } from "node:fs";
+
+/**
+ * HTML → PDF via playwright-core + Chromium (ARCHITEKTUR §1: runs in the worker, never in the app container).
+ *
+ * Browser resolution (first match wins):
+ *   1. PDF_CHROMIUM_PATH — explicit executable (Docker worker image: /usr/bin/chromium)
+ *   2. Playwright-managed Chromium (`npx playwright-core install chromium`)
+ *   3. Locally installed Google Chrome (developer machines, channel "chrome")
+ * Throws PdfRendererUnavailableError if none can be launched.
+ */
+
+export class PdfRendererUnavailableError extends Error {
+  constructor(cause: string) {
+    super(`PDF renderer unavailable: ${cause}`);
+    this.name = "PdfRendererUnavailableError";
+  }
+}
+
+export type RenderPdfOptions = {
+  headerHtml?: string;
+  footerHtml?: string;
+  /** mm margins */
+  margin?: { top: string; bottom: string; left: string; right: string };
+};
+
+type Browser = import("playwright-core").Browser;
+
+async function launch(): Promise<Browser> {
+  const { chromium } = await import("playwright-core");
+  const errors: string[] = [];
+  const explicit = process.env.PDF_CHROMIUM_PATH?.trim();
+  const attempts: Array<() => Promise<Browser>> = [];
+  if (explicit) attempts.push(() => chromium.launch({ executablePath: explicit, args: ["--no-sandbox", "--disable-dev-shm-usage"] }));
+  attempts.push(async () => {
+    const path = chromium.executablePath();
+    if (!path || !existsSync(path)) throw new Error("playwright chromium not installed");
+    return chromium.launch({ args: ["--disable-dev-shm-usage"] });
+  });
+  attempts.push(() => chromium.launch({ channel: "chrome" }));
+  for (const attempt of attempts) {
+    try {
+      return await attempt();
+    } catch (err) {
+      errors.push((err as Error).message.split("\n")[0]);
+    }
+  }
+  throw new PdfRendererUnavailableError(errors.join(" | "));
+}
+
+/** Render a full HTML document to an A4 PDF (print backgrounds, header/footer with page numbers). */
+export async function renderHtmlToPdf(html: string, opts: RenderPdfOptions = {}): Promise<Buffer> {
+  const browser = await launch();
+  try {
+    const context = await browser.newContext({ javaScriptEnabled: false });
+    const page = await context.newPage();
+    // No network: all assets (photos, logo, signature, fonts) are inlined as data: URIs.
+    await page.route("**/*", (route) => (route.request().url().startsWith("data:") ? route.continue() : route.abort()));
+    await page.setContent(html, { waitUntil: "load" });
+    const pdf = await page.pdf({
+      format: "A4",
+      printBackground: true,
+      displayHeaderFooter: Boolean(opts.headerHtml || opts.footerHtml),
+      headerTemplate: opts.headerHtml ?? "<span></span>",
+      footerTemplate: opts.footerHtml ?? "<span></span>",
+      margin: opts.margin ?? { top: "22mm", bottom: "20mm", left: "16mm", right: "16mm" },
+      preferCSSPageSize: false,
+    });
+    await context.close();
+    return pdf;
+  } finally {
+    await browser.close();
+  }
+}
+
+/** true if a browser can be launched (tests skip the render smoke otherwise). */
+export async function pdfRendererAvailable(): Promise<{ ok: true } | { ok: false; reason: string }> {
+  try {
+    const b = await launch();
+    await b.close();
+    return { ok: true };
+  } catch (err) {
+    return { ok: false, reason: (err as Error).message };
+  }
+}
diff --git a/src/server/pdf/templates/report.tsx b/src/server/pdf/templates/report.tsx
new file mode 100644
index 0000000..ce87ad2
--- /dev/null
+++ b/src/server/pdf/templates/report.tsx
@@ -0,0 +1,322 @@
+/* eslint-disable @next/next/no-head-element, @next/next/no-img-element -- standalone print document for Chromium, not a Next.js page */
+import { renderToStaticMarkup } from "react-dom/server";
+import { REPORT_TEXT_FIELDS, splitMinutes, type MaterialLine, type ReportContent } from "@/lib/reports/content";
+import { DOCUMENT_THEME, documentFooterLine } from "@/lib/document-brand";
+
+/**
+ * Report PDF template (React SSR → static HTML, rendered by src/server/pdf/render.ts).
+ * Craftvia document CD from src/lib/document-brand.ts; tenant logo if available, else company name.
+ * All labels come from messages/<locale>/reports.json (passed in as `t`).
+ */
+
+export type Translate = (key: string, values?: Record<string, string | number>) => string;
+
+export type ReportPdfInput = {
+  content: ReportContent;
+  reportId: string;
+  status: string;
+  approvedAt: Date | null;
+  t: Translate;
+  locale: string;
+  timeZone: string;
+  /** documentId → data: URI (photos, signature image, logo) */
+  images: Record<string, string>;
+  logoDataUri?: string | null;
+  /** SHA-256 of the canonical content snapshot (the PDF's own checksum is stored on the report) */
+  contentChecksum: string;
+  fontDataUri?: string | null;
+};
+
+const esc = (s: string) => s.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;");
+
+function css(fontDataUri?: string | null) {
+  const th = DOCUMENT_THEME;
+  return `
+${fontDataUri ? `@font-face{font-family:"CraftviaInter";src:url(${fontDataUri}) format("truetype");font-weight:100 900;}` : ""}
+@page{size:A4;}
+*{box-sizing:border-box;}
+html,body{margin:0;padding:0;}
+body{font-family:${fontDataUri ? `"CraftviaInter",` : ""}${th.bodyFont};color:${th.text};font-size:9.5pt;line-height:1.45;background:${th.pageBackground};}
+h1{font-family:${fontDataUri ? `"CraftviaInter",` : ""}${th.headingFont};color:${th.accent};font-size:17pt;margin:0 0 2mm;}
+h2{font-family:${fontDataUri ? `"CraftviaInter",` : ""}${th.headingFont};color:${th.accent};font-size:11pt;margin:6mm 0 2mm;padding-bottom:1mm;border-bottom:0.6pt solid ${th.rule};break-after:avoid;}
+h3{font-size:9.5pt;margin:3mm 0 1mm;color:${th.text};break-after:avoid;}
+.muted{color:${th.textMuted};}
+.head{display:flex;justify-content:space-between;align-items:flex-start;gap:8mm;border-bottom:2pt solid ${th.accentStrong};padding-bottom:3mm;margin-bottom:4mm;}
+.logo{max-height:16mm;max-width:60mm;}
+.org{font-weight:700;color:${th.accent};font-size:12pt;}
+.meta{text-align:right;font-size:8.5pt;}
+.grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5mm 8mm;}
+.kv dt{font-size:7.5pt;text-transform:uppercase;letter-spacing:.04em;color:${th.textMuted};margin:0;}
+.kv dd{margin:0 0 1.5mm;}
+table{width:100%;border-collapse:collapse;margin:1mm 0 2mm;}
+th{background:${th.tableHeaderBackground};text-align:left;font-size:8pt;padding:1.2mm 1.5mm;border-bottom:0.6pt solid ${th.rule};}
+td{padding:1.2mm 1.5mm;border-bottom:0.4pt solid ${th.rule};vertical-align:top;}
+tr{break-inside:avoid;}
+td.num,th.num{text-align:right;white-space:nowrap;}
+.text{white-space:pre-wrap;break-inside:avoid-page;}
+.photos{display:grid;grid-template-columns:1fr 1fr;gap:4mm;}
+.photo{break-inside:avoid;border:0.4pt solid ${th.rule};padding:1.5mm;}
+.photo img{width:100%;height:62mm;object-fit:contain;background:${th.tableHeaderBackground};display:block;}
+.photo .cap{font-size:8pt;margin-top:1mm;}
+.sig{break-inside:avoid;border:0.6pt solid ${th.rule};padding:3mm;}
+.sig img{max-height:30mm;max-width:90mm;display:block;margin:2mm 0;}
+.badge{display:inline-block;border:0.6pt solid ${th.accent};color:${th.accent};border-radius:2mm;padding:.3mm 2mm;font-size:8pt;font-weight:700;}
+.dev{color:${th.accentStrong};font-weight:700;}
+`;
+}
+
+function Kv({ label, value }: { label: string; value?: string | null }) {
+  if (!value) return null;
+  return (
+    <div>
+      <dt>{label}</dt>
+      <dd>{value}</dd>
+    </div>
+  );
+}
+
+function fmtDuration(t: Translate, minutes: number) {
+  const s = splitMinutes(minutes);
+  return t("time.hoursMinutes", { hours: s.hours, minutes: String(s.minutes).padStart(2, "0") });
+}
+
+function MaterialTable({ t, lines }: { t: Translate; lines: MaterialLine[] }) {
+  return (
+    <table>
+      <thead>
+        <tr>
+          <th>{t("materials.name")}</th>
+          <th className="num">{t("materials.planned")}</th>
+          <th className="num">{t("materials.actual")}</th>
+          <th>{t("field.status")}</th>
+          <th>{t("materials.reason")}</th>
+        </tr>
+      </thead>
+      <tbody>
+        {lines.map((m, i) => (
+          <tr key={`${m.usageId ?? m.planId ?? i}`}>
+            <td>
+              {m.name}
+              {m.articleNumber ? <span className="muted"> · {m.articleNumber}</span> : null}
+            </td>
+            <td className="num">{m.plannedQuantity ? `${m.plannedQuantity} ${m.unit}` : "—"}</td>
+            <td className="num">{m.actualQuantity ? `${m.actualQuantity} ${m.unit}` : "—"}</td>
+            <td>
+              {m.status ? t(`materialStatus.${m.status}`) : t("materials.undocumented")}
+              {m.deviation ? <span className="dev"> · {t("materials.deviation")}</span> : null}
+            </td>
+            <td>{m.deviationReason ?? ""}</td>
+          </tr>
+        ))}
+      </tbody>
+    </table>
+  );
+}
+
+function ReportDocument(input: ReportPdfInput) {
+  const { content: c, t } = input;
+  const dateFmt = new Intl.DateTimeFormat(input.locale, { timeZone: input.timeZone, dateStyle: "medium" });
+  const dateTimeFmt = new Intl.DateTimeFormat(input.locale, { timeZone: input.timeZone, dateStyle: "medium", timeStyle: "short" });
+  const dayFmt = (key: string) => new Intl.DateTimeFormat(input.locale, { timeZone: "UTC", dateStyle: "medium" }).format(new Date(`${key}T00:00:00Z`));
+  const addr = (a: { line1: string | null; line2: string | null }) => [a.line1, a.line2].filter(Boolean).join(", ");
+  const texts = REPORT_TEXT_FIELDS.filter((f) => c.texts[f].trim());
+  const hasMaterial = c.materials.used.length + c.materials.notUsed.length + c.materials.additional.length > 0;
+
+  return (
+    <html lang={input.locale}>
+      <head>
+        <meta charSet="utf-8" />
+        <title>{`${t(`type.${c.type}`)} ${c.reportNumber}`}</title>
+        <style dangerouslySetInnerHTML={{ __html: css(input.fontDataUri) }} />
+      </head>
+      <body>
+        <div className="head">
+          <div>
+            {input.logoDataUri ? <img className="logo" src={input.logoDataUri} alt={c.tenant.name} /> : <div className="org">{c.tenant.name}</div>}
+            <div className="muted">{[c.tenant.address, c.tenant.phone, c.tenant.email].filter(Boolean).join(" · ")}</div>
+          </div>
+          <div className="meta">
+            <h1>{t(`type.${c.type}`)}</h1>
+            <div>
+              {t("field.reportNumber")}: <strong>{c.reportNumber}</strong> · {t("field.version")} {c.version}
+            </div>
+            <div>
+              {t("field.reportDate")}: {dayFmt(c.reportDate)}
+            </div>
+            <div>
+              {t("pdf.approvalStatus")}:{" "}
+              <span className="badge">
+                {t(`status.${input.status}`)}
+                {input.approvedAt ? ` · ${dateFmt.format(input.approvedAt)}` : ""}
+              </span>
+            </div>
+          </div>
+        </div>
+
+        <h2>{t("section.header")}</h2>
+        <dl className="kv grid">
+          <Kv label={t("field.customer")} value={[c.customer.name, addr(c.customer.address)].filter(Boolean).join(", ")} />
+          <Kv label={t("field.customerNumber")} value={c.customer.number} />
+          <Kv label={t("field.site")} value={c.site ? [c.site.name, addr(c.site.address)].filter(Boolean).join(", ") : null} />
+          <Kv label={t("field.contact")} value={c.contact ? [c.contact.name, c.contact.role, c.contact.phone, c.contact.email].filter(Boolean).join(" · ") : null} />
+          <Kv label={t("field.orderNumber")} value={[c.workOrder.number, c.workOrder.externalOrderNumber].filter(Boolean).join(" / ")} />
+          <Kv label={t("field.orderType")} value={c.workOrder.orderType} />
+          <Kv label={t("field.workOrder")} value={c.workOrder.title} />
+          <Kv label={t("field.workDates")} value={c.workDates.map(dayFmt).join(", ")} />
+          <Kv label={t("field.staff")} value={c.staff.map((s) => s.name).join(", ")} />
+          <Kv label={t("field.technician")} value={c.technician?.name} />
+        </dl>
+        {c.workOrder.description ? (
+          <>
+            <h3>{t("field.description")}</h3>
+            <div className="text">{c.workOrder.description}</div>
+          </>
+        ) : null}
+
+        <h2>{t("section.time")}</h2>
+        {c.time.entries.length === 0 ? (
+          <p className="muted">{t("time.empty")}</p>
+        ) : (
+          <table>
+            <thead>
+              <tr>
+                <th>{t("time.person")}</th>
+                <th>{t("time.type")}</th>
+                <th className="num">{t("time.duration")}</th>
+              </tr>
+            </thead>
+            <tbody>
+              {c.time.entries.map((e) => (
+                <tr key={`${e.userId}-${e.type}`}>
+                  <td>{e.name}</td>
+                  <td>{t(`timeType.${e.type}`)}</td>
+                  <td className="num">{fmtDuration(t, e.minutes)}</td>
+                </tr>
+              ))}
+              {Object.entries(c.time.totalsByType).map(([type, minutes]) => (
+                <tr key={`sum-${type}`}>
+                  <td className="muted">{t("time.totalByType")}</td>
+                  <td>{t(`timeType.${type}`)}</td>
+                  <td className="num">{fmtDuration(t, minutes)}</td>
+                </tr>
+              ))}
+              <tr>
+                <td colSpan={2}>
+                  <strong>{t("time.total")}</strong>
+                </td>
+                <td className="num">
+                  <strong>{fmtDuration(t, c.time.totalMinutes)}</strong>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        )}
+        {c.time.hasRunningEntries ? <p className="muted">{t("time.running", { time: dateTimeFmt.format(new Date(c.generatedAt)) })}</p> : null}
+
+        {texts.length ? <h2>{t("section.texts")}</h2> : null}
+        {texts.map((f) => (
+          <div key={f}>
+            <h3>{t(`texts.${f}`)}</h3>
+            <div className="text">{c.texts[f]}</div>
+          </div>
+        ))}
+
+        <h2>{t("section.materials")}</h2>
+        {!hasMaterial ? <p className="muted">{t("materials.empty")}</p> : null}
+        {c.materials.used.length ? (
+          <>
+            <h3>{t("materials.used")}</h3>
+            <MaterialTable t={t} lines={c.materials.used} />
+          </>
+        ) : null}
+        {c.materials.notUsed.length ? (
+          <>
+            <h3>{t("materials.notUsed")}</h3>
+            <MaterialTable t={t} lines={c.materials.notUsed} />
+          </>
+        ) : null}
+        {c.materials.additional.length ? (
+          <>
+            <h3>{t("materials.additional")}</h3>
+            <MaterialTable t={t} lines={c.materials.additional} />
+          </>
+        ) : null}
+
+        {c.checklist.length ? (
+          <>
+            <h2>{t("section.checklist")}</h2>
+            <table>
+              <tbody>
+                {c.checklist.map((i, idx) => (
+                  <tr key={idx}>
+                    <td>
+                      {i.label}
+                      {i.required ? <span className="muted"> · {t("checklist.required")}</span> : null}
+                      {i.comment ? <div className="muted">{i.comment}</div> : null}
+                    </td>
+                    <td className="num">{i.checked ? `✓ ${t("checklist.done")}` : `○ ${t("checklist.open")}`}</td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </>
+        ) : null}
+
+        <h2>{t("section.photos")}</h2>
+        {c.photos.length === 0 ? (
+          <p className="muted">{t("photos.empty")}</p>
+        ) : (
+          <div className="photos">
+            {c.photos.map((p, idx) => (
+              <div className="photo" key={p.photoId}>
+                {input.images[p.documentId] ? <img src={input.images[p.documentId]} alt={t("photos.alt", { index: idx + 1 })} /> : null}
+                <div className="cap">
+                  <strong>{idx + 1}.</strong> {p.phase ? t(`phase.${p.phase}`) : ""}
+                  {p.requirement ? ` · ${t("photos.requirement", { label: p.requirement })}` : ""} · {dateTimeFmt.format(new Date(p.takenAt))}
+                  {p.comment ? <div>{p.comment}</div> : null}
+                </div>
+              </div>
+            ))}
+          </div>
+        )}
+
+        <h2>{t("section.signature")}</h2>
+        {!c.signature ? (
+          <p className="muted">{t("signature.none")}</p>
+        ) : (
+          <div className="sig">
+            <div>
+              <strong>{t(`outcome.${c.signature.outcome}`)}</strong>
+            </div>
+            {c.signature.imageDocumentId && input.images[c.signature.imageDocumentId] ? (
+              <img src={input.images[c.signature.imageDocumentId]} alt={t("signature.image", { name: c.signature.signerName ?? "" })} />
+            ) : null}
+            <dl className="kv grid">
+              <Kv label={t("signature.signer")} value={c.signature.signerName} />
+              <Kv label={t("signature.role")} value={c.signature.signerRole} />
+              <Kv label={t("signature.signedAt")} value={dateTimeFmt.format(new Date(c.signature.signedAt))} />
+              <Kv label={t("signature.capturedBy")} value={c.signature.capturedByName} />
+              <Kv label={t("signature.reason")} value={c.signature.reason} />
+            </dl>
+            {c.signature.confirmationText ? <div className="text muted">{c.signature.confirmationText}</div> : null}
+          </div>
+        )}
+      </body>
+    </html>
+  );
+}
+
+/** Returns the document HTML plus Chromium header/footer templates (page numbers, report id, version, checksum). */
+export function renderReportHtml(input: ReportPdfInput): { html: string; headerHtml: string; footerHtml: string } {
+  const { content: c, t } = input;
+  const html = "<!doctype html>" + renderToStaticMarkup(<ReportDocument {...input} />);
+  const small = `font-family:${DOCUMENT_THEME.bodyFont};font-size:7pt;color:${DOCUMENT_THEME.textMuted};width:100%;padding:0 16mm;display:flex;justify-content:space-between;gap:6mm;`;
+  const headerHtml = `<div style="${small}"><span>${esc(c.tenant.name)}</span><span>${esc(t(`type.${c.type}`))} ${esc(c.reportNumber)} · ${esc(t("field.version"))} ${c.version}</span></div>`;
+  const page = esc(t("pdf.page", { page: "__P__", pages: "__N__" }))
+    .replace("__P__", '<span class="pageNumber"></span>')
+    .replace("__N__", '<span class="totalPages"></span>');
+  const footerHtml =
+    `<div style="${small}"><span>${esc(t("pdf.reportId"))}: ${esc(input.reportId)} · ${esc(t("field.version"))} ${c.version} · ` +
+    `${esc(t("pdf.checksum"))}: ${esc(input.contentChecksum)}<br/>${esc(documentFooterLine())}</span><span style="white-space:nowrap">${page}</span></div>`;
+  return { html, headerHtml, footerHtml };
+}
diff --git a/src/server/services/reports/_stubs/documents.ts b/src/server/services/reports/_stubs/documents.ts
new file mode 100644
index 0000000..ee14efd
--- /dev/null
+++ b/src/server/services/reports/_stubs/documents.ts
@@ -0,0 +1,88 @@
+/**
+ * STUB (lane L5 „Berichte") for the shared file contract ARCHITEKTUR §4.3
+ * `src/server/services/documents/store.ts#storeFile` (not yet provided by the architect / documents lane).
+ *
+ * Minimal implementation behind the contracted interface: allowlist + magic bytes + size limit,
+ * SHA-256, storage.put, Document row, lineage versioning. At merge the import in
+ * services/reports/*.ts is switched to the real store and this file is deleted.
+ */
+import { createHash, randomUUID } from "node:crypto";
+import type { Document, DocumentCategory, DocumentVisibility } from "@prisma/client";
+import { storage } from "@/server/storage/adapter";
+import { ServiceError, type ServiceCtx } from "@/server/services/context";
+
+export type StoreFileInput = {
+  bytes: Uint8Array;
+  fileName: string;
+  declaredMime: string;
+  category: DocumentCategory;
+  visibility: DocumentVisibility;
+  links: { customerId?: string | null; siteId?: string | null; workOrderId?: string | null };
+  lineageId?: string;
+  title?: string | null;
+};
+
+const LIMITS: Record<string, number> = { "application/pdf": 25 * 1024 * 1024, "image/png": 15 * 1024 * 1024, "image/jpeg": 15 * 1024 * 1024, "image/webp": 15 * 1024 * 1024 };
+
+export function sniffMime(bytes: Uint8Array): string | null {
+  const b = bytes;
+  if (b.length >= 5 && b[0] === 0x25 && b[1] === 0x50 && b[2] === 0x44 && b[3] === 0x46 && b[4] === 0x2d) return "application/pdf";
+  if (b.length >= 8 && b[0] === 0x89 && b[1] === 0x50 && b[2] === 0x4e && b[3] === 0x47) return "image/png";
+  if (b.length >= 3 && b[0] === 0xff && b[1] === 0xd8 && b[2] === 0xff) return "image/jpeg";
+  if (b.length >= 12 && b[0] === 0x52 && b[1] === 0x49 && b[2] === 0x46 && b[3] === 0x46 && b[8] === 0x57 && b[9] === 0x45 && b[10] === 0x42 && b[11] === 0x50) return "image/webp";
+  return null;
+}
+
+export function sha256Hex(bytes: Uint8Array): string {
+  return createHash("sha256").update(bytes).digest("hex");
+}
+
+export async function storeFile(ctx: ServiceCtx, input: StoreFileInput): Promise<Document> {
+  const mime = sniffMime(input.bytes);
+  if (!mime || mime !== input.declaredMime) throw new ServiceError("invalid", "file type not allowed or does not match content");
+  if (input.bytes.byteLength === 0 || input.bytes.byteLength > (LIMITS[mime] ?? 0)) throw new ServiceError("invalid", "file size not allowed");
+  const fileName = input.fileName.normalize("NFC").replace(/[^\w.\- ]+/g, "_").slice(0, 120) || "datei";
+  const checksum = sha256Hex(input.bytes);
+  const put = await storage.put({ tenantId: ctx.tenantId, filename: fileName, contentType: mime, bytes: input.bytes });
+
+  let version = 1;
+  const lineageId = input.lineageId ?? randomUUID();
+  if (input.lineageId) {
+    const last = await ctx.db.document.findFirst({ where: { lineageId }, orderBy: { version: "desc" }, select: { version: true } });
+    version = (last?.version ?? 0) + 1;
+  }
+  return ctx.db.document.create({
+    data: {
+      tenantId: ctx.tenantId,
+      customerId: input.links.customerId ?? null,
+      siteId: input.links.siteId ?? null,
+      workOrderId: input.links.workOrderId ?? null,
+      category: input.category,
+      title: input.title ?? null,
+      fileName,
+      storageKey: put.storageKey,
+      mimeType: mime,
+      fileSize: input.bytes.byteLength,
+      checksum,
+      version,
+      lineageId,
+      visibility: input.visibility,
+      uploadStatus: "uploaded",
+      uploadedById: ctx.userId,
+    },
+  });
+}
+
+/** Read the bytes of a stored document (worker/PDF rendering). null if the backend has no bytes. */
+export async function readFileBytes(storageKey: string): Promise<Uint8Array | null> {
+  const obj = await storage.get(storageKey);
+  if (!obj) return null;
+  const chunks: Uint8Array[] = [];
+  const reader = obj.stream.getReader();
+  for (;;) {
+    const { done, value } = await reader.read();
+    if (done) break;
+    if (value) chunks.push(value);
+  }
+  return Buffer.concat(chunks);
+}
diff --git a/src/server/services/reports/_stubs/work-orders.ts b/src/server/services/reports/_stubs/work-orders.ts
new file mode 100644
index 0000000..901656d
--- /dev/null
+++ b/src/server/services/reports/_stubs/work-orders.ts
@@ -0,0 +1,80 @@
+/**
+ * STUB (lane L5 „Berichte") for contracts owned by lane L2 „Aufträge":
+ *   - services/work-orders/transition.ts#transitionWorkOrder
+ *   - services/work-orders/guards.ts#getCompletionBlockers   (ARCHITEKTUR §3 „Guards vor Abschluss")
+ *
+ * Interface follows ARCHITEKTUR §3. At merge the architect replaces the imports in
+ * services/reports/*.ts with the L2 implementations and deletes this file.
+ * Contract extension used by L5 (for L6 mail deduplication): optional `eventData` is merged into the emitted event's
+ * `data` (e.g. `{ occurrenceId }`) — the L2 implementation should accept it as well.
+ */
+import type { WorkOrderStatus as DbWorkOrderStatus } from "@prisma/client";
+import type { DomainEvent } from "@/lib/events";
+import { canTransition, requiredPermission, type CompletionBlocker, type WorkOrderStatus } from "@/lib/work-orders/status";
+import { writeAuditLog } from "@/server/audit";
+import { emitEvent } from "@/server/events";
+import { can, ServiceError, type ServiceCtx } from "@/server/services/context";
+import { requireVisibleWorkOrder } from "@/server/services/work-orders/visibility";
+
+export type TransitionInput = {
+  workOrderId: string;
+  to: WorkOrderStatus;
+  reason?: string | null;
+  /** optimistic concurrency (offline sync) */
+  expectedVersion?: number;
+  /** extra event data, e.g. { occurrenceId } for repeatable events */
+  eventData?: DomainEvent["data"];
+};
+
+export async function transitionWorkOrder(ctx: ServiceCtx, input: TransitionInput): Promise<{ id: string; status: WorkOrderStatus; version: number }> {
+  const wo = await requireVisibleWorkOrder(ctx, input.workOrderId, { id: true, status: true, version: true, number: true });
+  const from = wo.status as WorkOrderStatus;
+  if (!canTransition(from, input.to)) throw new ServiceError("invalid", `transition ${from} → ${input.to} not allowed`);
+  const perm = requiredPermission(from, input.to);
+  const allowed = perm === "report:approve_team" ? can(ctx, "report:approve_team") || can(ctx, "report:approve") : can(ctx, perm);
+  if (!allowed) throw new ServiceError("forbidden", `missing permission ${perm}`);
+  if (input.expectedVersion !== undefined && input.expectedVersion !== wo.version) {
+    throw new ServiceError("conflict", "work order version changed");
+  }
+  const res = await ctx.db.workOrder.updateMany({
+    where: { id: wo.id, version: wo.version },
+    data: { status: input.to as DbWorkOrderStatus, version: { increment: 1 } },
+  });
+  if (res.count !== 1) throw new ServiceError("conflict", "work order changed concurrently");
+  await ctx.db.workOrderStatusChange.create({
+    data: { tenantId: ctx.tenantId, workOrderId: wo.id, fromStatus: from, toStatus: input.to, actorId: ctx.userId, reason: input.reason ?? null },
+  });
+  await writeAuditLog({
+    tenantId: ctx.tenantId,
+    actorId: ctx.userId,
+    action: "update",
+    entity: "work_order",
+    entityId: wo.id,
+    before: { status: from },
+    after: { status: input.to, reason: input.reason ?? null },
+  });
+  const eventType =
+    input.to === "daily_report_created"
+      ? "work_order.daily_report_created"
+      : input.to === "technically_completed"
+        ? "work_order.technically_completed"
+        : input.to === "signature_pending"
+          ? "work_order.signature_missing"
+          : "work_order.changed";
+  await emitEvent(ctx, { type: eventType, entityType: "work_order", entityId: wo.id, data: { number: wo.number, from, to: input.to, ...input.eventData } });
+  return { id: wo.id, status: input.to, version: wo.version + 1 };
+}
+
+export async function getCompletionBlockers(ctx: ServiceCtx, workOrderId: string): Promise<CompletionBlocker[]> {
+  await requireVisibleWorkOrder(ctx, workOrderId, { id: true });
+  const [items, requirements, running] = await Promise.all([
+    ctx.db.checklistItem.findMany({ where: { workOrderId, required: true, checked: false }, orderBy: { sortOrder: "asc" }, select: { id: true, label: true } }),
+    ctx.db.photoRequirement.findMany({ where: { workOrderId, photos: { none: {} } }, orderBy: { sortOrder: "asc" }, select: { id: true, label: true } }),
+    ctx.db.workSession.findMany({ where: { workOrderId, status: { in: ["en_route", "running", "paused"] } }, select: { id: true, userId: true } }),
+  ]);
+  return [
+    ...items.map((i): CompletionBlocker => ({ kind: "checklist_item", itemId: i.id, label: i.label })),
+    ...requirements.map((r): CompletionBlocker => ({ kind: "photo_requirement", requirementId: r.id, label: r.label })),
+    ...running.map((s): CompletionBlocker => ({ kind: "running_session", sessionId: s.id, userId: s.userId })),
+  ];
+}
diff --git a/src/server/services/reports/approve.ts b/src/server/services/reports/approve.ts
new file mode 100644
index 0000000..7a066ea
--- /dev/null
+++ b/src/server/services/reports/approve.ts
@@ -0,0 +1,95 @@
+import type { Report } from "@prisma/client";
+import { z } from "zod";
+import { emitEvent } from "@/server/events";
+import { can, ServiceError, type ServiceCtx } from "@/server/services/context";
+import { auditReport, contentOf, orderNumberOf, refreshContent, reportAuditView, requireVisibleReport } from "./common";
+
+export const approveReportSchema = z.object({ reportId: z.string().min(1).max(64) });
+export type ApproveReportInput = z.input<typeof approveReportSchema>;
+
+export type ApproveDeps = {
+  /** queue PDF rendering (worker); injectable for tests */
+  dispatchPdf: (ctx: ServiceCtx, reportId: string) => Promise<void>;
+};
+
+export const defaultApproveDeps: ApproveDeps = {
+  async dispatchPdf(ctx, reportId) {
+    try {
+      const [{ dispatchJob }, { JOB_QUEUES }] = await Promise.all([import("@/server/jobs/dispatch"), import("@/server/jobs/queues")]);
+      await dispatchJob(JOB_QUEUES.reportPdf, { tenantId: ctx.tenantId, entityId: reportId, actorId: ctx.userId });
+    } catch (err) {
+      // Approval stays valid; the PDF can be regenerated from the report detail page.
+      console.error(`[reports] pdf job for ${reportId} failed:`, (err as Error).message);
+    }
+  },
+};
+
+/**
+ * Freigabe (ARCHITEKTUR §2):
+ * - report:approve       → approved (from submitted/team_approved): content frozen, older approved versions superseded, PDF job, event
+ * - report:approve_team  → team_approved (from submitted); the report now waits for backoffice → report.submitted (approvalStage "backoffice")
+ */
+export async function approveReport(ctx: ServiceCtx, raw: ApproveReportInput, deps: ApproveDeps = defaultApproveDeps): Promise<Report> {
+  const input = approveReportSchema.parse(raw);
+  const final = can(ctx, "report:approve");
+  if (!final && !can(ctx, "report:approve_team")) throw new ServiceError("forbidden", "missing permission report:approve");
+  const report = await requireVisibleReport(ctx, input.reportId);
+
+  if (!final) {
+    if (report.status !== "submitted") throw new ServiceError("conflict", `report is ${report.status}`);
+    const teamApprovedAt = new Date();
+    const res = await ctx.db.report.updateMany({
+      where: { id: report.id, status: "submitted" },
+      data: { status: "team_approved", teamApprovedById: ctx.userId, teamApprovedAt },
+    });
+    if (res.count !== 1) throw new ServiceError("conflict", "report changed concurrently");
+    const updated = await ctx.db.report.findFirstOrThrow({ where: { id: report.id } });
+    await auditReport(ctx, "update", report.id, reportAuditView(report), reportAuditView(updated));
+    await emitEvent(ctx, {
+      type: "report.submitted",
+      entityType: "report",
+      entityId: report.id,
+      data: {
+        reportType: report.type,
+        number: contentOf(updated).reportNumber,
+        workOrderNumber: await orderNumberOf(ctx, report.workOrderId),
+        version: report.version,
+        approvalStage: "backoffice",
+        occurrenceId: `${report.id}:team_approved:${teamApprovedAt.getTime()}`,
+      },
+    });
+    return updated;
+  }
+
+  if (report.status !== "submitted" && report.status !== "team_approved") throw new ServiceError("conflict", `report is ${report.status}`);
+  const content = await refreshContent(ctx, report);
+  const res = await ctx.db.report.updateMany({
+    where: { id: report.id, status: { in: ["submitted", "team_approved"] } },
+    data: { status: "approved", approvedById: ctx.userId, approvedAt: new Date(), content },
+  });
+  if (res.count !== 1) throw new ServiceError("conflict", "report changed concurrently");
+  const superseded = await ctx.db.report.findMany({
+    where: { lineageId: report.lineageId, id: { not: report.id }, status: "approved", version: { lt: report.version } },
+    select: { id: true },
+  });
+  if (superseded.length) {
+    await ctx.db.report.updateMany({ where: { id: { in: superseded.map((s) => s.id) } }, data: { status: "superseded" } });
+    for (const s of superseded) await auditReport(ctx, "update", s.id, { status: "approved" }, { status: "superseded", supersededBy: report.id });
+  }
+  const updated = await ctx.db.report.findFirstOrThrow({ where: { id: report.id } });
+  await auditReport(ctx, "update", report.id, reportAuditView(report), reportAuditView(updated));
+  await emitEvent(ctx, {
+    type: "report.approved",
+    entityType: "report",
+    entityId: report.id,
+    data: {
+      reportType: report.type,
+      number: contentOf(updated).reportNumber,
+      workOrderNumber: await orderNumberOf(ctx, report.workOrderId),
+      version: report.version,
+      occurrenceId: report.id, // approval happens once per report version
+    },
+  });
+  await deps.dispatchPdf(ctx, report.id);
+  return updated;
+}
diff --git a/src/server/services/reports/build-content.ts b/src/server/services/reports/build-content.ts
new file mode 100644
index 0000000..97d45d0
--- /dev/null
+++ b/src/server/services/reports/build-content.ts
@@ -0,0 +1,270 @@
+import type { Prisma } from "@prisma/client";
+import {
+  emptyTexts,
+  type MaterialLine,
+  type ReportContent,
+  type ReportTexts,
+  type ReportType,
+  type SignatureBlock,
+} from "@/lib/reports/content";
+import { dayWindow, localDateKey } from "@/lib/reports/dates";
+import type { ServiceCtx } from "@/server/services/context";
+import { requireVisibleWorkOrder } from "@/server/services/work-orders/visibility";
+
+export type BuildContentInput = {
+  workOrderId: string;
+  type: ReportType;
+  /** YYYY-MM-DD in tenant time zone */
+  reportDate: string;
+  reportNumber: string;
+  version: number;
+  /** keep edited texts; when omitted texts are prefilled from activity notes */
+  texts?: ReportTexts;
+  /** id of the report whose Signature row feeds the signature block */
+  reportId?: string | null;
+  /** fallback when the report has no Signature row (e.g. copied into a new version) */
+  previousSignature?: SignatureBlock | null;
+  technicianUserId: string | null;
+  now?: Date;
+};
+
+export async function tenantTimeZone(ctx: ServiceCtx): Promise<string> {
+  const s = await ctx.db.tenantSettings.findFirst({ select: { timezone: true } });
+  return s?.timezone || "Europe/Berlin";
+}
+
+const joinLines = (...parts: Array<string | null | undefined>) => parts.filter((p) => p && p.trim()).join("\n");
+const dec = (v: Prisma.Decimal | null | undefined) => (v == null ? null : v.toString());
+
+function address(street?: string | null, houseNumber?: string | null, postalCode?: string | null, city?: string | null) {
+  const line1 = [street, houseNumber].filter(Boolean).join(" ") || null;
+  const line2 = [postalCode, city].filter(Boolean).join(" ") || null;
+  return { line1, line2 };
+}
+
+/**
+ * Build the report snapshot from the database (ARCHITEKTUR §4.7).
+ * Daily report: only time entries, notes, photos and material usages of `reportDate`.
+ * Completion report: the whole work order.
+ * Access: the work order must be visible to the caller (workOrderScope).
+ */
+export async function buildReportContent(ctx: ServiceCtx, input: BuildContentInput): Promise<ReportContent> {
+  const now = input.now ?? new Date();
+  await requireVisibleWorkOrder(ctx, input.workOrderId, { id: true });
+  const timeZone = await tenantTimeZone(ctx);
+  const daily = input.type === "daily";
+  const win = dayWindow(input.reportDate, timeZone);
+  const inDay = daily ? { gte: win.start, lt: win.end } : undefined;
+
+  const [wo, settings, tenant, entries, notes, photos, usages, plans, checklist, signature, technician] = await Promise.all([
+    ctx.db.workOrder.findFirstOrThrow({
+      where: { id: input.workOrderId },
+      include: {
+        customer: true,
+        site: true,
+        contact: true,
+        orderType: { select: { name: true } },
+        assignees: { include: { user: { select: { id: true, name: true } } } },
+      },
+    }),
+    ctx.db.tenantSettings.findFirst({ select: { orgName: true, address: true, phone: true, email: true } }),
+    ctx.db.user.findFirst({ where: { id: ctx.userId }, select: { tenant: { select: { name: true } } } }),
+    ctx.db.timeEntry.findMany({
+      where: { workSession: { workOrderId: input.workOrderId }, ...(inDay ? { startedAt: inDay } : {}) },
+      orderBy: { startedAt: "asc" },
+      select: { userId: true, type: true, startedAt: true, endedAt: true },
+    }),
+    ctx.db.activityNote.findMany({
+      where: { workOrderId: input.workOrderId, deletedAt: null, ...(inDay ? { createdAt: inDay } : {}) },
+      orderBy: { createdAt: "asc" },
+      select: { kind: true, text: true },
+    }),
+    ctx.db.photo.findMany({
+      where: { workOrderId: input.workOrderId, includeInReport: true, ...(inDay ? { takenAt: inDay } : {}) },
+      orderBy: { takenAt: "asc" },
+      include: { photoRequirement: { select: { label: true } } },
+    }),
+    ctx.db.materialUsage.findMany({
+      where: { workOrderId: input.workOrderId, ...(inDay ? { createdAt: inDay } : {}) },
+      orderBy: { createdAt: "asc" },
+      include: { materialPlan: true },
+    }),
+    ctx.db.materialPlan.findMany({ where: { workOrderId: input.workOrderId }, orderBy: { sortOrder: "asc" } }),
+    ctx.db.checklistItem.findMany({ where: { workOrderId: input.workOrderId }, orderBy: { sortOrder: "asc" } }),
+    input.reportId ? ctx.db.signature.findFirst({ where: { reportId: input.reportId } }) : Promise.resolve(null),
+    input.technicianUserId ? ctx.db.user.findFirst({ where: { id: input.technicianUserId }, select: { id: true, name: true } }) : Promise.resolve(null),
+  ]);
+
+  // ---- people & time ----
+  const userIds = new Set<string>(entries.map((e) => e.userId));
+  if (signature?.capturedById) userIds.add(signature.capturedById);
+  const users = await ctx.db.user.findMany({ where: { id: { in: [...userIds] } }, select: { id: true, name: true } });
+  const nameOf = new Map(users.map((u) => [u.id, u.name]));
+  for (const a of wo.assignees) nameOf.set(a.user.id, a.user.name);
+
+  const perKey = new Map<string, { userId: string; name: string; type: (typeof entries)[number]["type"]; minutes: number }>();
+  let hasRunningEntries = false;
+  for (const e of entries) {
+    if (!e.endedAt) hasRunningEntries = true;
+    const minutes = Math.max(0, Math.round(((e.endedAt ?? now).getTime() - e.startedAt.getTime()) / 60_000));
+    const key = `${e.userId}|${e.type}`;
+    const cur = perKey.get(key) ?? { userId: e.userId, name: nameOf.get(e.userId) ?? "—", type: e.type, minutes: 0 };
+    cur.minutes += minutes;
+    perKey.set(key, cur);
+  }
+  const timeLines = [...perKey.values()];
+  const totalsByType: Record<string, number> = {};
+  const byPerson = new Map<string, { userId: string; name: string; minutes: number }>();
+  let totalMinutes = 0;
+  for (const l of timeLines) {
+    totalsByType[l.type] = (totalsByType[l.type] ?? 0) + l.minutes;
+    if (l.type === "break") continue;
+    totalMinutes += l.minutes;
+    const p = byPerson.get(l.userId) ?? { userId: l.userId, name: l.name, minutes: 0 };
+    p.minutes += l.minutes;
+    byPerson.set(l.userId, p);
+  }
+
+  const staffIds = [...new Set(entries.map((e) => e.userId))];
+  const staff = (staffIds.length ? staffIds : wo.assignees.map((a) => a.userId)).map((id) => ({ userId: id, name: nameOf.get(id) ?? "—" }));
+
+  const workDates = daily
+    ? [input.reportDate]
+    : [...new Set(entries.map((e) => localDateKey(e.startedAt, timeZone)))].sort();
+
+  // ---- texts (prefill from notes on create) ----
+  const byKind = (...kinds: string[]) => joinLines(...notes.filter((n) => kinds.includes(n.kind)).map((n) => n.text));
+  const texts: ReportTexts = input.texts ?? {
+    ...emptyTexts(),
+    workPerformed: byKind("work_done", "general"),
+    deviations: byKind("deviation"),
+    additionalWork: byKind("additional_work"),
+    problems: byKind("problem", "not_executable"),
+    openItems: byKind("follow_up"),
+    nextSteps: "",
+    hints: byKind("recommendation", "customer_note"),
+  };
+
+  // ---- materials ----
+  const used: MaterialLine[] = [];
+  const notUsed: MaterialLine[] = [];
+  const additional: MaterialLine[] = [];
+  const plansWithUsage = new Set<string>();
+  for (const u of usages) {
+    if (u.materialPlanId) plansWithUsage.add(u.materialPlanId);
+    const planned = u.materialPlan ? dec(u.materialPlan.plannedQuantity) : null;
+    const quantityDiffers = u.materialPlan ? !u.materialPlan.plannedQuantity.equals(u.actualQuantity) : false;
+    const line: MaterialLine = {
+      usageId: u.id,
+      planId: u.materialPlanId,
+      name: u.name,
+      articleNumber: u.articleNumber,
+      plannedQuantity: planned,
+      actualQuantity: dec(u.actualQuantity),
+      unit: u.unit,
+      status: u.usageStatus,
+      deviation: u.usageStatus !== "fully_used" || quantityDiffers,
+      deviationReason: u.deviationReason,
+      notes: u.notes,
+      documented: true,
+    };
+    if (u.usageStatus === "additional" || !u.materialPlanId) additional.push({ ...line, deviation: true });
+    else if (u.usageStatus === "not_used") notUsed.push(line);
+    else used.push(line);
+  }
+  if (!daily) {
+    for (const p of plans) {
+      if (plansWithUsage.has(p.id)) continue;
+      notUsed.push({
+        usageId: null,
+        planId: p.id,
+        name: p.name,
+        articleNumber: p.articleNumber,
+        plannedQuantity: dec(p.plannedQuantity),
+        actualQuantity: null,
+        unit: p.unit,
+        status: null,
+        deviation: true,
+        deviationReason: null,
+        notes: p.notes,
+        documented: false,
+      });
+    }
+  }
+
+  // ---- signature ----
+  let signatureBlock: SignatureBlock | null = input.previousSignature ?? null;
+  if (signature) {
+    signatureBlock = {
+      outcome: signature.outcome,
+      signerName: signature.signerName,
+      signerRole: signature.signerRole,
+      signedAt: signature.signedAt.toISOString(),
+      reason: signature.reason,
+      confirmationText: signature.confirmationText,
+      imageDocumentId: signature.imageDocumentId,
+      capturedByName: signature.capturedById ? (nameOf.get(signature.capturedById) ?? null) : null,
+    };
+  }
+
+  const customerName =
+    wo.customer.companyName || [wo.customer.firstName, wo.customer.lastName].filter(Boolean).join(" ") || wo.customer.customerNumber || "—";
+
+  return {
+    schemaVersion: 1,
+    type: input.type,
+    reportNumber: input.reportNumber,
+    version: input.version,
+    reportDate: input.reportDate,
+    generatedAt: now.toISOString(),
+    tenant: {
+      name: settings?.orgName || tenant?.tenant.name || "—",
+      address: settings?.address ?? null,
+      phone: settings?.phone ?? null,
+      email: settings?.email ?? null,
+      logoDocumentId: null, // TODO(settings): TenantSettings.logoKey is not a Document yet
+    },
+    customer: {
+      id: wo.customer.id,
+      number: wo.customer.customerNumber,
+      name: customerName,
+      address: address(wo.customer.street, wo.customer.houseNumber, wo.customer.postalCode, wo.customer.city),
+    },
+    site: wo.site ? { id: wo.site.id, name: wo.site.name, address: address(wo.site.street, wo.site.houseNumber, wo.site.postalCode, wo.site.city) } : null,
+    contact: wo.contact
+      ? { name: wo.contact.name, role: wo.contact.role, phone: wo.contact.phone ?? wo.contact.mobile, email: wo.contact.email }
+      : null,
+    workOrder: {
+      id: wo.id,
+      number: wo.number,
+      externalOrderNumber: wo.externalOrderNumber,
+      title: wo.title,
+      description: wo.description,
+      scope: wo.scope,
+      orderType: wo.orderType?.name ?? null,
+      signatureRequired: wo.signatureRequired,
+    },
+    workDates,
+    staff,
+    time: {
+      entries: timeLines,
+      totalsByType,
+      totalsByPerson: [...byPerson.values()],
+      totalMinutes,
+      hasRunningEntries,
+    },
+    texts,
+    materials: { used, notUsed, additional },
+    photos: photos.map((p) => ({
+      photoId: p.id,
+      documentId: p.documentId,
+      phase: p.phase,
+      comment: p.comment,
+      requirement: p.photoRequirement?.label ?? null,
+      takenAt: p.takenAt.toISOString(),
+    })),
+    checklist: checklist.map((c) => ({ label: c.label, required: c.required, checked: c.checked, comment: c.comment })),
+    signature: signatureBlock,
+    technician: technician ? { userId: technician.id, name: technician.name } : null,
+  };
+}
diff --git a/src/server/services/reports/common.ts b/src/server/services/reports/common.ts
new file mode 100644
index 0000000..0886e0b
--- /dev/null
+++ b/src/server/services/reports/common.ts
@@ -0,0 +1,67 @@
+import type { Prisma, Report } from "@prisma/client";
+import { parseReportContent, type ReportContent } from "@/lib/reports/content";
+import { dbDateToKey } from "@/lib/reports/dates";
+import { writeAuditLog } from "@/server/audit";
+import { can, ServiceError, type ServiceCtx } from "@/server/services/context";
+import { workOrderScope } from "@/server/services/work-orders/visibility";
+import { buildReportContent } from "./build-content";
+
+/** Report where-clause restricted to work orders the caller may see (ARCHITEKTUR §2). */
+export async function reportScope(ctx: ServiceCtx): Promise<Prisma.ReportWhereInput> {
+  if (!can(ctx, "report:read")) return { id: "__none__" };
+  return { workOrder: await workOrderScope(ctx) };
+}
+
+/** Load a report visible to the caller or throw not_found (never reveal existence). */
+export async function requireVisibleReport(ctx: ServiceCtx, reportId: string): Promise<Report> {
+  const scope = await reportScope(ctx);
+  const report = await ctx.db.report.findFirst({ where: { AND: [{ id: reportId }, scope] } });
+  if (!report) throw new ServiceError("not_found", "report not found");
+  return report;
+}
+
+export function contentOf(report: Pick<Report, "content">): ReportContent {
+  return parseReportContent(report.content);
+}
+
+/** Rebuild DB-derived parts of a report snapshot while keeping number, version and edited texts. */
+export async function refreshContent(ctx: ServiceCtx, report: Report): Promise<ReportContent> {
+  const current = contentOf(report);
+  return buildReportContent(ctx, {
+    workOrderId: report.workOrderId,
+    type: report.type,
+    reportDate: dbDateToKey(report.reportDate),
+    reportNumber: current.reportNumber,
+    version: report.version,
+    texts: current.texts,
+    reportId: report.id,
+    previousSignature: current.signature,
+    technicianUserId: report.createdById,
+  });
+}
+
+/** Compact, PII-light audit projection of a report. */
+export function reportAuditView(r: Pick<Report, "id" | "status" | "type" | "version" | "lineageId" | "workOrderId"> & { rejectionReason?: string | null }) {
+  return { id: r.id, status: r.status, type: r.type, version: r.version, lineageId: r.lineageId, workOrderId: r.workOrderId, rejectionReason: r.rejectionReason ?? null };
+}
+
+export async function auditReport(
+  ctx: ServiceCtx,
+  action: "create" | "update",
+  entityId: string,
+  before: unknown,
+  after: unknown,
+  entity: "report" | "signature" = "report",
+) {
+  await writeAuditLog({ tenantId: ctx.tenantId, actorId: ctx.userId, action, entity, entityId, before, after });
+}
+
+export function assertEditable(report: Pick<Report, "status">) {
+  if (report.status !== "draft" && report.status !== "rejected") throw new ServiceError("conflict", `report is ${report.status}`);
+}
+
+/** Customer-facing work order numbers for events/templates. */
+export async function orderNumberOf(ctx: ServiceCtx, workOrderId: string): Promise<string> {
+  const wo = await ctx.db.workOrder.findFirst({ where: { id: workOrderId }, select: { number: true } });
+  return wo?.number ?? "";
+}
diff --git a/src/server/services/reports/create.ts b/src/server/services/reports/create.ts
new file mode 100644
index 0000000..7f4f561
--- /dev/null
+++ b/src/server/services/reports/create.ts
@@ -0,0 +1,126 @@
+import { randomUUID } from "node:crypto";
+import type { Report } from "@prisma/client";
+import { z } from "zod";
+import { FIELD_EDITABLE, type WorkOrderStatus } from "@/lib/work-orders/status";
+import { dateKeyToDbDate, localDateKey } from "@/lib/reports/dates";
+import { assertCan, ServiceError, type ServiceCtx } from "@/server/services/context";
+import { nextNumber } from "@/server/services/numbering";
+import { requireVisibleWorkOrder } from "@/server/services/work-orders/visibility";
+// TODO(merge L2): import from "@/server/services/work-orders/transition" and ".../guards"
+import { getCompletionBlockers, transitionWorkOrder } from "./_stubs/work-orders";
+import { buildReportContent, tenantTimeZone } from "./build-content";
+import { auditReport, reportAuditView } from "./common";
+
+export const createReportSchema = z.object({
+  workOrderId: z.string().min(1).max(64),
+  reportDate: z
+    .string()
+    .regex(/^\d{4}-\d{2}-\d{2}$/)
+    .optional(),
+  clientId: z.string().min(1).max(64).optional(),
+});
+export type CreateReportInput = z.input<typeof createReportSchema>;
+export type CreateReportResult = { report: Report; created: boolean };
+
+async function byClientId(ctx: ServiceCtx, clientId?: string): Promise<Report | null> {
+  if (!clientId) return null;
+  return ctx.db.report.findFirst({ where: { clientId } });
+}
+
+async function createDraft(
+  ctx: ServiceCtx,
+  args: { workOrderId: string; type: "daily" | "completion"; dateKey: string; clientId?: string },
+): Promise<Report> {
+  const reportNumber = await nextNumber(ctx.db, ctx.tenantId, "report");
+  const content = await buildReportContent(ctx, {
+    workOrderId: args.workOrderId,
+    type: args.type,
+    reportDate: args.dateKey,
+    reportNumber,
+    version: 1,
+    technicianUserId: ctx.userId,
+  });
+  const report = await ctx.db.report.create({
+    data: {
+      tenantId: ctx.tenantId,
+      workOrderId: args.workOrderId,
+      type: args.type,
+      reportDate: dateKeyToDbDate(args.dateKey),
+      version: 1,
+      lineageId: randomUUID(),
+      status: "draft",
+      content,
+      createdById: ctx.userId,
+      clientId: args.clientId ?? null,
+    },
+  });
+  await auditReport(ctx, "create", report.id, null, { ...reportAuditView(report), reportNumber });
+  return report;
+}
+
+/**
+ * Tagesbericht (Spec §16.3): draft for one calendar day, work order → daily_report_created, order stays open.
+ * Idempotent per (work order, day): an existing draft/rejected report of that day is returned.
+ */
+export async function createDailyReport(ctx: ServiceCtx, raw: CreateReportInput): Promise<CreateReportResult> {
+  assertCan(ctx, "report:write");
+  const input = createReportSchema.parse(raw);
+  const dup = await byClientId(ctx, input.clientId);
+  if (dup) return { report: dup, created: false };
+
+  const wo = await requireVisibleWorkOrder(ctx, input.workOrderId, { id: true, status: true });
+  const dateKey = input.reportDate ?? localDateKey(new Date(), await tenantTimeZone(ctx));
+
+  const existing = await ctx.db.report.findFirst({
+    where: { workOrderId: wo.id, type: "daily", reportDate: dateKeyToDbDate(dateKey), status: { not: "superseded" } },
+    orderBy: { version: "desc" },
+  });
+  if (existing) {
+    if (existing.status === "draft" || existing.status === "rejected") return { report: existing, created: false };
+    throw new ServiceError("conflict", "daily report for this day already submitted");
+  }
+
+  const status = wo.status as WorkOrderStatus;
+  // one daily report per order and day → stable occurrence id for L6 mail deduplication
+  const eventData = { occurrenceId: `${wo.id}:${dateKey}` };
+  if (status === "paused" || status === "waiting_material") {
+    await transitionWorkOrder(ctx, { workOrderId: wo.id, to: "in_progress" });
+    await transitionWorkOrder(ctx, { workOrderId: wo.id, to: "daily_report_created", eventData });
+  } else if (status === "in_progress") {
+    await transitionWorkOrder(ctx, { workOrderId: wo.id, to: "daily_report_created", eventData });
+  } else if (status !== "daily_report_created") {
+    throw new ServiceError("invalid", `work order is ${status}`);
+  }
+
+  const report = await createDraft(ctx, { workOrderId: wo.id, type: "daily", dateKey, clientId: input.clientId });
+  return { report, created: true };
+}
+
+/**
+ * Abschlussbericht (Spec §17): checks completion guards first (blocked → CompletionBlocker[] in details).
+ * One completion lineage per work order; changes after approval go through createNewVersion.
+ */
+export async function createCompletionReport(ctx: ServiceCtx, raw: CreateReportInput): Promise<CreateReportResult> {
+  assertCan(ctx, "report:write");
+  const input = createReportSchema.parse(raw);
+  const dup = await byClientId(ctx, input.clientId);
+  if (dup) return { report: dup, created: false };
+
+  const wo = await requireVisibleWorkOrder(ctx, input.workOrderId, { id: true, status: true });
+  const existing = await ctx.db.report.findFirst({
+    where: { workOrderId: wo.id, type: "completion", status: { not: "superseded" } },
+    orderBy: { version: "desc" },
+  });
+  if (existing) {
+    if (existing.status === "draft" || existing.status === "rejected") return { report: existing, created: false };
+    throw new ServiceError("conflict", `completion report is ${existing.status}`);
+  }
+  if (!FIELD_EDITABLE.includes(wo.status as WorkOrderStatus)) throw new ServiceError("invalid", `work order is ${wo.status}`);
+
+  const blockers = await getCompletionBlockers(ctx, wo.id);
+  if (blockers.length) throw new ServiceError("blocked", "completion blocked", blockers);
+
+  const dateKey = input.reportDate ?? localDateKey(new Date(), await tenantTimeZone(ctx));
+  const report = await createDraft(ctx, { workOrderId: wo.id, type: "completion", dateKey, clientId: input.clientId });
+  return { report, created: true };
+}
diff --git a/src/server/services/reports/edit.ts b/src/server/services/reports/edit.ts
new file mode 100644
index 0000000..27fcc54
--- /dev/null
+++ b/src/server/services/reports/edit.ts
@@ -0,0 +1,27 @@
+import type { Report } from "@prisma/client";
+import { z } from "zod";
+import { reportTextsSchema } from "@/lib/reports/content";
+import { assertCan, type ServiceCtx } from "@/server/services/context";
+import { assertEditable, auditReport, contentOf, requireVisibleReport } from "./common";
+
+export const editReportSchema = z.object({
+  reportId: z.string().min(1).max(64),
+  texts: reportTextsSchema.partial(),
+});
+export type EditReportInput = z.input<typeof editReportSchema>;
+
+/** Edit the free-text block of a draft/rejected report (technician check & completion, Spec §16.3 step 4). */
+export async function updateReportTexts(ctx: ServiceCtx, raw: EditReportInput): Promise<Report> {
+  assertCan(ctx, "report:write");
+  const input = editReportSchema.parse(raw);
+  const report = await requireVisibleReport(ctx, input.reportId);
+  assertEditable(report);
+  const content = contentOf(report);
+  const texts = { ...content.texts, ...input.texts };
+  const updated = await ctx.db.report.update({
+    where: { id: report.id },
+    data: { content: { ...content, texts } },
+  });
+  await auditReport(ctx, "update", report.id, { texts: content.texts }, { texts });
+  return updated;
+}
diff --git a/src/server/services/reports/files.ts b/src/server/services/reports/files.ts
new file mode 100644
index 0000000..6eee56e
--- /dev/null
+++ b/src/server/services/reports/files.ts
@@ -0,0 +1,50 @@
+import { storage, type StoredContent } from "@/server/storage/adapter";
+import { ServiceError, type ServiceCtx } from "@/server/services/context";
+import { allowedDocumentVisibility } from "@/server/services/work-orders/visibility";
+import { contentOf, requireVisibleReport } from "./common";
+
+export type ReportFile = StoredContent & { mimeType: string; fileName: string; checksum: string };
+
+/**
+ * Open a file that belongs to a report the caller may see: the report PDF, a photo, the signature image or
+ * the tenant logo referenced by the snapshot. Anything else → not_found (no generic file oracle).
+ */
+export async function openReportFile(ctx: ServiceCtx, reportId: string, documentId: string | "pdf"): Promise<ReportFile> {
+  const report = await requireVisibleReport(ctx, reportId);
+  let id: string | null;
+  if (documentId === "pdf") {
+    id = report.pdfDocumentId;
+  } else {
+    const c = contentOf(report);
+    const referenced = new Set<string>([
+      ...c.photos.map((p) => p.documentId),
+      ...(c.signature?.imageDocumentId ? [c.signature.imageDocumentId] : []),
+      ...(c.tenant.logoDocumentId ? [c.tenant.logoDocumentId] : []),
+      ...(report.pdfDocumentId ? [report.pdfDocumentId] : []),
+    ]);
+    id = referenced.has(documentId) ? documentId : null;
+  }
+  if (!id) throw new ServiceError("not_found", "file not found");
+  const doc = await ctx.db.document.findFirst({
+    where: { id, deletedAt: null, visibility: { in: allowedDocumentVisibility(ctx) } },
+    select: { storageKey: true, mimeType: true, fileName: true, checksum: true },
+  });
+  if (!doc || !doc.storageKey.startsWith(`${ctx.tenantId}/`)) throw new ServiceError("not_found", "file not found");
+  const obj = await storage.get(doc.storageKey);
+  if (!obj) throw new ServiceError("not_found", "file not available");
+  return { ...obj, mimeType: doc.mimeType, fileName: doc.fileName, checksum: doc.checksum };
+}
+
+export function fileResponse(file: ReportFile, opts: { download?: boolean } = {}): Response {
+  const inlineOk = file.mimeType === "application/pdf" || file.mimeType.startsWith("image/");
+  const disposition = opts.download || !inlineOk ? "attachment" : "inline";
+  const headers = new Headers({
+    "Content-Type": file.mimeType,
+    "Content-Disposition": `${disposition}; filename="${file.fileName.replace(/["\\\r\n]/g, "_")}"`,
+    "X-Content-Type-Options": "nosniff",
+    "Cache-Control": "private, no-store",
+    "X-Checksum-SHA256": file.checksum,
+  });
+  if (file.size != null) headers.set("Content-Length", String(file.size));
+  return new Response(file.stream, { headers });
+}
diff --git a/src/server/services/reports/http.ts b/src/server/services/reports/http.ts
new file mode 100644
index 0000000..073ffae
--- /dev/null
+++ b/src/server/services/reports/http.ts
@@ -0,0 +1,48 @@
+import { ZodError } from "zod";
+import { moduleGuard } from "@/server/action-guard";
+import { ModuleDisabledError } from "@/server/modules";
+import { ForbiddenError, type Permission } from "@/server/rbac";
+import { ctxFromGuard, ServiceError, type ServiceCtx } from "@/server/services/context";
+
+/**
+ * Thin adapter for /api/v1 report route handlers: module gate + DB-authoritative permissions → ServiceCtx,
+ * uniform JSON error mapping. (No shared requireApiContext exists yet; replace at merge if the architect adds one.)
+ */
+const guard = moduleGuard("reports");
+
+const STATUS: Record<ServiceError["code"], number> = { not_found: 404, forbidden: 403, invalid: 400, conflict: 409, blocked: 422 };
+
+export function apiError(err: unknown): Response {
+  if (err instanceof ServiceError) return Response.json({ error: err.code, details: err.details ?? null }, { status: STATUS[err.code] });
+  if (err instanceof ZodError) return Response.json({ error: "invalid", details: err.issues.map((i) => ({ path: i.path.join("."), code: i.code })) }, { status: 400 });
+  if (err instanceof ForbiddenError || err instanceof ModuleDisabledError) return Response.json({ error: "forbidden" }, { status: 403 });
+  if (err instanceof Error && /Nicht angemeldet|nicht aktiv|nicht mehr gueltig|Passwortwechsel/.test(err.message)) {
+    return Response.json({ error: "unauthorized" }, { status: 401 });
+  }
+  console.error("[api/reports]", err);
+  return Response.json({ error: "internal" }, { status: 500 });
+}
+
+export async function withReportsApi(permissions: Permission[], handler: (ctx: ServiceCtx) => Promise<Response>): Promise<Response> {
+  try {
+    const g = await guard(...permissions);
+    return await handler(ctxFromGuard(g));
+  } catch (err) {
+    return apiError(err);
+  }
+}
+
+export async function readJson(req: Request): Promise<Record<string, unknown>> {
+  const text = await req.text();
+  if (!text.trim()) return {};
+  try {
+    const v = JSON.parse(text);
+    return v && typeof v === "object" && !Array.isArray(v) ? v : {};
+  } catch {
+    throw new ServiceError("invalid", "body must be JSON");
+  }
+}
+
+export function reportDto(r: { id: string; type: string; status: string; version: number; workOrderId: string; lineageId: string; pdfDocumentId?: string | null }) {
+  return { id: r.id, type: r.type, status: r.status, version: r.version, workOrderId: r.workOrderId, lineageId: r.lineageId, hasPdf: Boolean(r.pdfDocumentId) };
+}
diff --git a/src/server/services/reports/new-version.ts b/src/server/services/reports/new-version.ts
new file mode 100644
index 0000000..28e6962
--- /dev/null
+++ b/src/server/services/reports/new-version.ts
@@ -0,0 +1,53 @@
+import type { Report } from "@prisma/client";
+import { z } from "zod";
+import { dbDateToKey } from "@/lib/reports/dates";
+import { assertCan, ServiceError, type ServiceCtx } from "@/server/services/context";
+import { buildReportContent } from "./build-content";
+import { auditReport, contentOf, reportAuditView, requireVisibleReport } from "./common";
+
+export const newVersionSchema = z.object({ reportId: z.string().min(1).max(64) });
+export type NewVersionInput = z.input<typeof newVersionSchema>;
+
+/**
+ * Änderungen nach Freigabe (Spec §17.4): a new draft version (same lineage, version+1) is created from the
+ * approved snapshot. The approved version is NEVER modified here; it becomes `superseded` only when the
+ * successor is approved (approveReport), so a valid approved PDF exists at all times.
+ */
+export async function createNewVersion(ctx: ServiceCtx, raw: NewVersionInput): Promise<Report> {
+  assertCan(ctx, "report:approve");
+  assertCan(ctx, "report:write");
+  const input = newVersionSchema.parse(raw);
+  const report = await requireVisibleReport(ctx, input.reportId);
+  if (report.status !== "approved") throw new ServiceError("conflict", `report is ${report.status}`);
+  const latest = await ctx.db.report.findFirst({ where: { lineageId: report.lineageId }, orderBy: { version: "desc" }, select: { id: true } });
+  if (latest?.id !== report.id) throw new ServiceError("conflict", "a newer version already exists");
+
+  const approved = contentOf(report);
+  const version = report.version + 1;
+  const content = await buildReportContent(ctx, {
+    workOrderId: report.workOrderId,
+    type: report.type,
+    reportDate: dbDateToKey(report.reportDate),
+    reportNumber: approved.reportNumber,
+    version,
+    texts: approved.texts,
+    reportId: null,
+    previousSignature: approved.signature,
+    technicianUserId: report.createdById,
+  });
+  const created = await ctx.db.report.create({
+    data: {
+      tenantId: ctx.tenantId,
+      workOrderId: report.workOrderId,
+      type: report.type,
+      reportDate: report.reportDate,
+      version,
+      lineageId: report.lineageId,
+      status: "draft",
+      content,
+      createdById: report.createdById,
+    },
+  });
+  await auditReport(ctx, "create", created.id, null, { ...reportAuditView(created), previousVersionId: report.id });
+  return created;
+}
diff --git a/src/server/services/reports/pdf.ts b/src/server/services/reports/pdf.ts
new file mode 100644
index 0000000..f91c2ee
--- /dev/null
+++ b/src/server/services/reports/pdf.ts
@@ -0,0 +1,91 @@
+import { createHash } from "node:crypto";
+import { existsSync } from "node:fs";
+import { readFile } from "node:fs/promises";
+import { join } from "node:path";
+import { createTranslator } from "next-intl";
+import { ServiceError, type ServiceCtx } from "@/server/services/context";
+// TODO(merge documents): import from "@/server/services/documents/store"
+import { readFileBytes, storeFile } from "./_stubs/documents";
+import { tenantTimeZone } from "./build-content";
+import { auditReport, contentOf, requireVisibleReport } from "./common";
+
+async function loadReportMessages(locale: string): Promise<Record<string, unknown>> {
+  const file = join(process.cwd(), "messages", locale, "reports.json");
+  const fallback = join(process.cwd(), "messages", "de", "reports.json");
+  return JSON.parse(await readFile(existsSync(file) ? file : fallback, "utf8"));
+}
+
+async function dataUri(ctx: ServiceCtx, documentId: string): Promise<string | null> {
+  const doc = await ctx.db.document.findFirst({ where: { id: documentId, deletedAt: null }, select: { storageKey: true, mimeType: true } });
+  if (!doc || !doc.mimeType.startsWith("image/")) return null;
+  const bytes = await readFileBytes(doc.storageKey).catch(() => null);
+  return bytes ? `data:${doc.mimeType};base64,${Buffer.from(bytes).toString("base64")}` : null;
+}
+
+/** SHA-256 of the canonical content snapshot (printed in the PDF footer). */
+export function contentChecksum(content: unknown): string {
+  return createHash("sha256").update(JSON.stringify(content)).digest("hex");
+}
+
+/**
+ * Render the PDF of an APPROVED report and file it as Document (category daily_report/completion_report,
+ * visibility customer_report). Immutable: an existing pdfDocumentId is never replaced.
+ * Runs in the worker (jobs/processors/report-pdf.ts).
+ */
+export async function generateReportPdf(ctx: ServiceCtx, reportId: string): Promise<{ documentId: string; checksum: string; skipped: boolean }> {
+  const report = await requireVisibleReport(ctx, reportId);
+  if (report.status !== "approved" && report.status !== "superseded") throw new ServiceError("invalid", `report is ${report.status}`);
+  if (report.pdfDocumentId) return { documentId: report.pdfDocumentId, checksum: report.pdfChecksum ?? "", skipped: true };
+
+  const content = contentOf(report);
+  const settings = await ctx.db.tenantSettings.findFirst({ select: { locale: true } });
+  const locale = settings?.locale === "en" ? "en" : "de";
+  const timeZone = await tenantTimeZone(ctx);
+  const t = createTranslator({ locale, messages: await loadReportMessages(locale) }) as unknown as (key: string, values?: Record<string, string | number>) => string;
+
+  const imageIds = [...content.photos.map((p) => p.documentId), ...(content.signature?.imageDocumentId ? [content.signature.imageDocumentId] : [])];
+  const images: Record<string, string> = {};
+  for (const id of imageIds) {
+    const uri = await dataUri(ctx, id);
+    if (uri) images[id] = uri;
+  }
+  const fontPath = join(process.cwd(), "src", "app", "fonts", "inter-variable.ttf");
+  const fontDataUri = existsSync(fontPath) ? `data:font/ttf;base64,${(await readFile(fontPath)).toString("base64")}` : null;
+
+  const [{ renderReportHtml }, { renderHtmlToPdf }] = await Promise.all([import("@/server/pdf/templates/report"), import("@/server/pdf/render")]);
+  const { html, headerHtml, footerHtml } = renderReportHtml({
+    content,
+    reportId: report.id,
+    status: report.status,
+    approvedAt: report.approvedAt,
+    t: (key, values) => t(key, values),
+    locale,
+    timeZone,
+    images,
+    logoDataUri: content.tenant.logoDocumentId ? await dataUri(ctx, content.tenant.logoDocumentId) : null,
+    contentChecksum: contentChecksum(content),
+    fontDataUri,
+  });
+  const pdf = await renderHtmlToPdf(html, { headerHtml, footerHtml });
+
+  const doc = await storeFile(ctx, {
+    bytes: pdf,
+    fileName: `${content.reportNumber}-v${report.version}.pdf`,
+    declaredMime: "application/pdf",
+    category: report.type === "daily" ? "daily_report" : "completion_report",
+    visibility: "customer_report",
+    links: { customerId: content.customer.id, siteId: content.site?.id ?? null, workOrderId: report.workOrderId },
+    title: `${t(`type.${report.type}`)} ${content.reportNumber} v${report.version}`,
+  });
+  await ctx.db.document.update({ where: { id: doc.id }, data: { approvalStatus: "approved" } });
+
+  const res = await ctx.db.report.updateMany({ where: { id: report.id, pdfDocumentId: null }, data: { pdfDocumentId: doc.id, pdfChecksum: doc.checksum } });
+  if (res.count !== 1) {
+    // a concurrent run won — keep the first PDF, retire ours
+    await ctx.db.document.update({ where: { id: doc.id }, data: { deletedAt: new Date() } });
+    const current = await ctx.db.report.findFirstOrThrow({ where: { id: report.id }, select: { pdfDocumentId: true, pdfChecksum: true } });
+    return { documentId: current.pdfDocumentId ?? doc.id, checksum: current.pdfChecksum ?? "", skipped: true };
+  }
+  await auditReport(ctx, "update", report.id, { pdfDocumentId: null }, { pdfDocumentId: doc.id, pdfChecksum: doc.checksum });
+  return { documentId: doc.id, checksum: doc.checksum, skipped: false };
+}
diff --git a/src/server/services/reports/queries.ts b/src/server/services/reports/queries.ts
new file mode 100644
index 0000000..713c5fd
--- /dev/null
+++ b/src/server/services/reports/queries.ts
@@ -0,0 +1,127 @@
+import type { Prisma, ReportStatus, ReportType } from "@prisma/client";
+import { REPORT_STATUSES, REPORT_TYPES, type ReportContent } from "@/lib/reports/content";
+import { dateKeyToDbDate, localDateKey } from "@/lib/reports/dates";
+import type { CompletionBlocker } from "@/lib/work-orders/status";
+import { can, type ServiceCtx } from "@/server/services/context";
+import { requireVisibleWorkOrder } from "@/server/services/work-orders/visibility";
+// TODO(merge L2): import from "@/server/services/work-orders/guards"
+import { getCompletionBlockers } from "./_stubs/work-orders";
+import { tenantTimeZone } from "./build-content";
+import { contentOf, reportScope, requireVisibleReport } from "./common";
+
+export type ReportListFilters = { type?: string; status?: string; teamId?: string; from?: string; to?: string };
+export const LIST_LIMIT = 200;
+
+const REVIEW_RANK: Record<ReportStatus, number> = { submitted: 0, team_approved: 1, rejected: 2, draft: 3, approved: 4, superseded: 5 };
+const isDate = (s?: string) => Boolean(s && /^\d{4}-\d{2}-\d{2}$/.test(s));
+
+/** Backoffice list: in-review first, then most recently changed; filters type/status/team/period. */
+export async function listReports(ctx: ServiceCtx, f: ReportListFilters) {
+  const and: Prisma.ReportWhereInput[] = [await reportScope(ctx)];
+  if (f.type && (REPORT_TYPES as readonly string[]).includes(f.type)) and.push({ type: f.type as ReportType });
+  if (f.status === "all") {
+    // include superseded
+  } else if (f.status && (REPORT_STATUSES as readonly string[]).includes(f.status)) {
+    and.push({ status: f.status as ReportStatus });
+  } else {
+    and.push({ status: { not: "superseded" } });
+  }
+  if (f.teamId) and.push({ workOrder: { assignedTeamId: f.teamId } });
+  if (isDate(f.from)) and.push({ reportDate: { gte: dateKeyToDbDate(f.from!) } });
+  if (isDate(f.to)) and.push({ reportDate: { lte: dateKeyToDbDate(f.to!) } });
+
+  const rows = await ctx.db.report.findMany({
+    where: { AND: and },
+    orderBy: { updatedAt: "desc" },
+    take: LIST_LIMIT,
+    select: {
+      id: true,
+      type: true,
+      status: true,
+      version: true,
+      reportDate: true,
+      updatedAt: true,
+      aiDrafted: true,
+      content: true,
+      workOrder: { select: { id: true, number: true, title: true, team: { select: { name: true } } } },
+    },
+  });
+  const items = rows
+    .map((r) => {
+      const c = r.content as Partial<ReportContent>;
+      return {
+        id: r.id,
+        type: r.type,
+        status: r.status,
+        version: r.version,
+        reportDate: r.reportDate,
+        updatedAt: r.updatedAt,
+        aiDrafted: r.aiDrafted,
+        reportNumber: c.reportNumber ?? "—",
+        customerName: c.customer?.name ?? "—",
+        workOrder: { id: r.workOrder.id, number: r.workOrder.number, title: r.workOrder.title },
+        teamName: r.workOrder.team?.name ?? null,
+      };
+    })
+    .sort((a, b) => REVIEW_RANK[a.status] - REVIEW_RANK[b.status] || b.updatedAt.getTime() - a.updatedAt.getTime());
+  return { items, truncated: rows.length === LIST_LIMIT };
+}
+
+export async function teamOptions(ctx: ServiceCtx) {
+  return ctx.db.team.findMany({ where: { deletedAt: null }, orderBy: { name: "asc" }, select: { id: true, name: true } });
+}
+
+/** Detail incl. visible versions of the lineage and resolved actor names. */
+export async function getReportDetail(ctx: ServiceCtx, reportId: string) {
+  const report = await requireVisibleReport(ctx, reportId);
+  const scope = await reportScope(ctx);
+  const [versions, workOrder] = await Promise.all([
+    ctx.db.report.findMany({
+      where: { AND: [{ lineageId: report.lineageId }, scope] },
+      orderBy: { version: "desc" },
+      select: { id: true, version: true, status: true, approvedAt: true, updatedAt: true, pdfDocumentId: true },
+    }),
+    ctx.db.workOrder.findFirstOrThrow({ where: { id: report.workOrderId }, select: { id: true, number: true, status: true } }),
+  ]);
+  const actorIds = [report.teamApprovedById, report.approvedById].filter((x): x is string => Boolean(x));
+  const actors = actorIds.length ? await ctx.db.user.findMany({ where: { id: { in: actorIds } }, select: { id: true, name: true } }) : [];
+  const nameOf = (id: string | null) => (id ? (actors.find((a) => a.id === id)?.name ?? null) : null);
+  const latestVersion = versions[0]?.version ?? report.version;
+  return {
+    report,
+    content: contentOf(report),
+    versions,
+    workOrder,
+    teamApprovedByName: nameOf(report.teamApprovedById),
+    approvedByName: nameOf(report.approvedById),
+    permissions: {
+      approve: can(ctx, "report:approve") && (report.status === "submitted" || report.status === "team_approved"),
+      approveTeam: !can(ctx, "report:approve") && can(ctx, "report:approve_team") && report.status === "submitted",
+      reject: (can(ctx, "report:approve") && (report.status === "submitted" || report.status === "team_approved")) || (can(ctx, "report:approve_team") && report.status === "submitted"),
+      newVersion: can(ctx, "report:approve") && can(ctx, "report:write") && report.status === "approved" && report.version === latestVersion,
+      regeneratePdf: can(ctx, "report:approve") && report.status === "approved" && !report.pdfDocumentId,
+    },
+  };
+}
+
+/** Mobile screen state for /m/orders/[id]/report and /sign. */
+export async function getMobileReportState(ctx: ServiceCtx, workOrderId: string, type: "daily" | "completion") {
+  const wo = await requireVisibleWorkOrder(ctx, workOrderId, { id: true, number: true, title: true, status: true, signatureRequired: true });
+  const timeZone = await tenantTimeZone(ctx);
+  const today = localDateKey(new Date(), timeZone);
+  const report = await ctx.db.report.findFirst({
+    where: {
+      AND: [
+        await reportScope(ctx),
+        { workOrderId: wo.id, type, status: { not: "superseded" } },
+        type === "daily" ? { reportDate: dateKeyToDbDate(today) } : {},
+      ],
+    },
+    orderBy: [{ version: "desc" }],
+  });
+  let blockers: CompletionBlocker[] = [];
+  if (type === "completion" && (!report || report.status === "draft" || report.status === "rejected")) {
+    blockers = await getCompletionBlockers(ctx, wo.id);
+  }
+  return { workOrder: wo, report, content: report ? contentOf(report) : null, blockers, today, timeZone };
+}
diff --git a/src/server/services/reports/read-ctx.ts b/src/server/services/reports/read-ctx.ts
new file mode 100644
index 0000000..c0933ed
--- /dev/null
+++ b/src/server/services/reports/read-ctx.ts
@@ -0,0 +1,17 @@
+import { requireSession } from "@/server/auth";
+import { dbForTenant } from "@/server/db";
+import type { ServiceCtx } from "@/server/services/context";
+
+/**
+ * ServiceCtx for READ paths in server components. Permissions come from the session (JWT) as documented in
+ * AGENTS.md („Rechte im JWT wirken für Lesepfade"); mutations always go through moduleGuard (DB-authoritative).
+ */
+export async function readCtx(): Promise<ServiceCtx> {
+  const session = await requireSession();
+  return {
+    db: dbForTenant(session.user.tenantId),
+    tenantId: session.user.tenantId,
+    userId: session.user.id,
+    permissions: new Set(session.user.permissions ?? []),
+  };
+}
diff --git a/src/server/services/reports/reject.ts b/src/server/services/reports/reject.ts
new file mode 100644
index 0000000..856f9f0
--- /dev/null
+++ b/src/server/services/reports/reject.ts
@@ -0,0 +1,48 @@
+import type { Report } from "@prisma/client";
+import { z } from "zod";
+import { emitEvent } from "@/server/events";
+import { can, ServiceError, type ServiceCtx } from "@/server/services/context";
+// TODO(merge L2): import from "@/server/services/work-orders/transition"
+import { transitionWorkOrder } from "./_stubs/work-orders";
+import { auditReport, contentOf, orderNumberOf, reportAuditView, requireVisibleReport } from "./common";
+
+export const rejectReportSchema = z.object({
+  reportId: z.string().min(1).max(64),
+  reason: z.string().trim().min(3).max(2000),
+});
+export type RejectReportInput = z.input<typeof rejectReportSchema>;
+
+/** Zurückweisen mit Pflichtgrund: report → rejected, completion order in_review → in_progress (Korrektur). */
+export async function rejectReport(ctx: ServiceCtx, raw: RejectReportInput): Promise<Report> {
+  const final = can(ctx, "report:approve");
+  if (!final && !can(ctx, "report:approve_team")) throw new ServiceError("forbidden", "missing permission report:approve");
+  const parsed = rejectReportSchema.safeParse(raw);
+  if (!parsed.success) throw new ServiceError("invalid", "reason required", { field: "reason" });
+  const input = parsed.data;
+  const report = await requireVisibleReport(ctx, input.reportId);
+  const from = final ? (["submitted", "team_approved"] as const) : (["submitted"] as const);
+  if (!(from as readonly string[]).includes(report.status)) throw new ServiceError("conflict", `report is ${report.status}`);
+
+  const res = await ctx.db.report.updateMany({
+    where: { id: report.id, status: { in: [...from] } },
+    data: { status: "rejected", rejectionReason: input.reason },
+  });
+  if (res.count !== 1) throw new ServiceError("conflict", "report changed concurrently");
+  const updated = await ctx.db.report.findFirstOrThrow({ where: { id: report.id } });
+  // a report can be rejected more than once → one occurrence per rejection (L6 mail deduplication)
+  const occurrenceId = `${report.id}:rejected:${updated.updatedAt.getTime()}`;
+
+  if (report.type === "completion") {
+    const wo = await ctx.db.workOrder.findFirstOrThrow({ where: { id: report.workOrderId }, select: { status: true } });
+    if (wo.status === "in_review") await transitionWorkOrder(ctx, { workOrderId: report.workOrderId, to: "in_progress", reason: input.reason, eventData: { occurrenceId } });
+  }
+
+  await auditReport(ctx, "update", report.id, reportAuditView(report), reportAuditView(updated));
+  await emitEvent(ctx, {
+    type: "report.rejected",
+    entityType: "report",
+    entityId: report.id,
+    data: { reportType: report.type, number: contentOf(updated).reportNumber, workOrderNumber: await orderNumberOf(ctx, report.workOrderId), reason: input.reason, occurrenceId },
+  });
+  return updated;
+}
diff --git a/src/server/services/reports/signature.ts b/src/server/services/reports/signature.ts
new file mode 100644
index 0000000..e149fff
--- /dev/null
+++ b/src/server/services/reports/signature.ts
@@ -0,0 +1,113 @@
+import type { Signature } from "@prisma/client";
+import { z } from "zod";
+import { SIGNATURE_OUTCOMES, SIGNATURE_REASON_REQUIRED, type SignatureBlock } from "@/lib/reports/content";
+import { can, assertCan, ServiceError, type ServiceCtx } from "@/server/services/context";
+// TODO(merge L2): import from "@/server/services/work-orders/transition"
+import { transitionWorkOrder } from "./_stubs/work-orders";
+import { auditReport, contentOf, requireVisibleReport } from "./common";
+
+const optText = (max: number) =>
+  z
+    .string()
+    .trim()
+    .max(max)
+    .nullish()
+    .transform((v) => (v ? v : null));
+
+export const captureSignatureSchema = z.object({
+  reportId: z.string().min(1).max(64),
+  outcome: z.enum(SIGNATURE_OUTCOMES),
+  signerName: optText(200),
+  signerRole: optText(200),
+  imageDocumentId: optText(64),
+  reason: optText(2000),
+  confirmationText: z.string().trim().min(1).max(2000),
+  clientId: z.string().min(1).max(64).optional(),
+});
+export type CaptureSignatureInput = z.input<typeof captureSignatureSchema>;
+
+/** Outcomes that count as "signature documented" for the order flow (→ in_review). */
+export const SIGNATURE_DOCUMENTED = ["signed", "not_required", "customer_absent", "refused"] as const;
+
+/**
+ * Digitale Kundenunterschrift bzw. begründete Ausnahme (Spec §18).
+ * - signed: signer name + PNG image document required
+ * - customer_absent / refused / later: reason required
+ * - not_required: only if the work order does not require a signature or caller has report:approve
+ * A signed signature is never overwritten; other outcomes may be replaced (e.g. "later" → "signed").
+ */
+export async function captureSignature(ctx: ServiceCtx, raw: CaptureSignatureInput): Promise<Signature> {
+  assertCan(ctx, "report:write");
+  const input = captureSignatureSchema.parse(raw);
+  if (input.clientId) {
+    const dup = await ctx.db.signature.findFirst({ where: { clientId: input.clientId } });
+    if (dup) return dup;
+  }
+  const report = await requireVisibleReport(ctx, input.reportId);
+  if (report.status === "approved" || report.status === "superseded") throw new ServiceError("conflict", `report is ${report.status}`);
+  const wo = await ctx.db.workOrder.findFirstOrThrow({ where: { id: report.workOrderId }, select: { id: true, status: true, signatureRequired: true } });
+
+  if (input.outcome === "signed") {
+    if (!input.signerName) throw new ServiceError("invalid", "signer name required", { field: "signerName" });
+    if (!input.imageDocumentId) throw new ServiceError("invalid", "signature image required", { field: "image" });
+    const doc = await ctx.db.document.findFirst({
+      where: { id: input.imageDocumentId, category: "signature", mimeType: "image/png", workOrderId: wo.id, deletedAt: null },
+      select: { id: true },
+    });
+    if (!doc) throw new ServiceError("invalid", "signature image not found", { field: "image" });
+  } else if (input.imageDocumentId) {
+    throw new ServiceError("invalid", "image only allowed for signed outcome", { field: "image" });
+  }
+  if (SIGNATURE_REASON_REQUIRED.includes(input.outcome) && !input.reason) {
+    throw new ServiceError("invalid", "reason required", { field: "reason" });
+  }
+  if (input.outcome === "not_required" && wo.signatureRequired && !can(ctx, "report:approve")) {
+    throw new ServiceError("forbidden", "signature is required for this work order");
+  }
+
+  const existing = await ctx.db.signature.findFirst({ where: { reportId: report.id } });
+  if (existing?.outcome === "signed") throw new ServiceError("conflict", "signature already captured");
+
+  const data = {
+    outcome: input.outcome,
+    signerName: input.signerName,
+    signerRole: input.signerRole,
+    imageDocumentId: input.outcome === "signed" ? input.imageDocumentId : null,
+    confirmationText: input.confirmationText,
+    reason: input.reason,
+    signedAt: new Date(),
+    capturedById: ctx.userId,
+  };
+  const signature = existing
+    ? await ctx.db.signature.update({ where: { id: existing.id }, data })
+    : await ctx.db.signature.create({ data: { ...data, tenantId: ctx.tenantId, reportId: report.id, clientId: input.clientId ?? null } });
+
+  const me = await ctx.db.user.findFirst({ where: { id: ctx.userId }, select: { name: true } });
+  const block: SignatureBlock = {
+    outcome: signature.outcome,
+    signerName: signature.signerName,
+    signerRole: signature.signerRole,
+    signedAt: signature.signedAt.toISOString(),
+    reason: signature.reason,
+    confirmationText: signature.confirmationText,
+    imageDocumentId: signature.imageDocumentId,
+    capturedByName: me?.name ?? null,
+  };
+  const content = contentOf(report);
+  await ctx.db.report.update({ where: { id: report.id }, data: { content: { ...content, signature: block } } });
+
+  const view = (s: Pick<Signature, "outcome" | "signerName" | "signerRole" | "reason" | "imageDocumentId"> | null) =>
+    s && { reportId: report.id, outcome: s.outcome, signerName: s.signerName, signerRole: s.signerRole, reason: s.reason, imageDocumentId: s.imageDocumentId };
+  await auditReport(ctx, existing ? "update" : "create", signature.id, view(existing), view(signature), "signature");
+
+  // Signature captured after submit: order waiting for it can move on to review.
+  if (
+    report.type === "completion" &&
+    wo.status === "signature_pending" &&
+    (SIGNATURE_DOCUMENTED as readonly string[]).includes(signature.outcome) &&
+    can(ctx, "field:execute")
+  ) {
+    await transitionWorkOrder(ctx, { workOrderId: wo.id, to: "in_review", eventData: { occurrenceId: `${report.id}:signature:${signature.id}` } });
+  }
+  return signature;
+}
diff --git a/src/server/services/reports/submit.ts b/src/server/services/reports/submit.ts
new file mode 100644
index 0000000..41a707e
--- /dev/null
+++ b/src/server/services/reports/submit.ts
@@ -0,0 +1,111 @@
+import type { Report } from "@prisma/client";
+import { z } from "zod";
+import { missingRequiredTexts, type SignatureBlock } from "@/lib/reports/content";
+import type { CompletionBlocker, WorkOrderStatus } from "@/lib/work-orders/status";
+import { emitEvent } from "@/server/events";
+import { assertCan, ServiceError, type ServiceCtx } from "@/server/services/context";
+// TODO(merge L2): import from "@/server/services/work-orders/transition" and ".../guards"
+import { getCompletionBlockers, transitionWorkOrder } from "./_stubs/work-orders";
+import { auditReport, assertEditable, orderNumberOf, refreshContent, reportAuditView, requireVisibleReport } from "./common";
+
+export const submitReportSchema = z.object({
+  reportId: z.string().min(1).max(64),
+  /** WorkOrder.version seen by the device (offline sync conflict detection) */
+  expectedWorkOrderVersion: z.number().int().positive().optional(),
+});
+export type SubmitReportInput = z.input<typeof submitReportSchema>;
+
+function signaturePending(signatureRequired: boolean, sig: SignatureBlock | null): boolean {
+  return signatureRequired && (!sig || sig.outcome === "later");
+}
+
+/**
+ * Move the work order after a completion report was submitted (ARCHITEKTUR §3):
+ * … → in_progress → technically_completed → signature_pending | in_review.
+ * Statuses beyond review (new report versions) are left untouched.
+ */
+async function advanceOrder(ctx: ServiceCtx, workOrderId: string, status: WorkOrderStatus, signatureRequired: boolean, sig: SignatureBlock | null, occurrenceId: string) {
+  const pending = signaturePending(signatureRequired, sig);
+  const eventData = { occurrenceId };
+  let s = status;
+  if (s === "paused" || s === "waiting_material" || s === "daily_report_created") {
+    await transitionWorkOrder(ctx, { workOrderId, to: "in_progress", eventData });
+    s = "in_progress";
+  }
+  if (s === "in_progress") {
+    await transitionWorkOrder(ctx, { workOrderId, to: "technically_completed", eventData });
+    s = "technically_completed";
+  }
+  if (s === "technically_completed") {
+    await transitionWorkOrder(ctx, { workOrderId, to: pending ? "signature_pending" : "in_review", eventData });
+  } else if (s === "signature_pending" && !pending) {
+    await transitionWorkOrder(ctx, { workOrderId, to: "in_review", eventData });
+  }
+}
+
+/**
+ * Review stage the submitted report waits for (L6 recipient rules): "team" if the order has a team lead
+ * (explicit or leader of the assigned team), otherwise "backoffice".
+ */
+export async function approvalStageFor(ctx: ServiceCtx, workOrderId: string): Promise<"team" | "backoffice"> {
+  const wo = await ctx.db.workOrder.findFirst({
+    where: { id: workOrderId },
+    select: { teamLeadUserId: true, team: { select: { leaderUserId: true } } },
+  });
+  return wo?.teamLeadUserId || wo?.team?.leaderUserId ? "team" : "backoffice";
+}
+
+/** Technician submits a draft/rejected report for review ("Zur Prüfung"). */
+export async function submitReport(ctx: ServiceCtx, raw: SubmitReportInput): Promise<Report> {
+  assertCan(ctx, "report:write");
+  const input = submitReportSchema.parse(raw);
+  const report = await requireVisibleReport(ctx, input.reportId);
+  assertEditable(report);
+
+  const wo = await ctx.db.workOrder.findFirstOrThrow({
+    where: { id: report.workOrderId },
+    select: { id: true, status: true, version: true, signatureRequired: true, number: true },
+  });
+  if (input.expectedWorkOrderVersion !== undefined && input.expectedWorkOrderVersion !== wo.version) {
+    throw new ServiceError("conflict", "work order version changed");
+  }
+
+  const content = await refreshContent(ctx, report);
+  const blockers: CompletionBlocker[] = missingRequiredTexts(content).map((field) => ({ kind: "missing_field", field }));
+  if (report.type === "completion" && report.version === 1) blockers.push(...(await getCompletionBlockers(ctx, wo.id)));
+  if (blockers.length) throw new ServiceError("blocked", "report incomplete", blockers);
+
+  const submittedAt = new Date();
+  const res = await ctx.db.report.updateMany({
+    where: { id: report.id, status: { in: ["draft", "rejected"] } },
+    data: { status: "submitted", submittedAt, content },
+  });
+  if (res.count !== 1) throw new ServiceError("conflict", "report changed concurrently");
+  const updated = await ctx.db.report.findFirstOrThrow({ where: { id: report.id } });
+  // a report can be submitted again after rejection → one occurrence per submission
+  const occurrenceId = `${report.id}:${submittedAt.getTime()}`;
+
+  if (report.type === "completion" && report.version === 1) {
+    await advanceOrder(ctx, wo.id, wo.status as WorkOrderStatus, wo.signatureRequired, content.signature, occurrenceId);
+    const sig = content.signature;
+    if (wo.signatureRequired && sig && (sig.outcome === "refused" || sig.outcome === "customer_absent")) {
+      await emitEvent(ctx, { type: "work_order.signature_missing", entityType: "work_order", entityId: wo.id, data: { number: wo.number, outcome: sig.outcome, occurrenceId } });
+    }
+  }
+
+  await auditReport(ctx, "update", report.id, reportAuditView(report), reportAuditView(updated));
+  await emitEvent(ctx, {
+    type: "report.submitted",
+    entityType: "report",
+    entityId: report.id,
+    data: {
+      reportType: report.type,
+      number: content.reportNumber,
+      workOrderNumber: await orderNumberOf(ctx, wo.id),
+      version: report.version,
+      approvalStage: await approvalStageFor(ctx, wo.id),
+      occurrenceId,
+    },
+  });
+  return updated;
+}