Basis: Certvia dev@a48c5fb als Fundament für Craftvia

Unveränderter Stand von certvia/dev (a48c5fb) plus Craftvia-Spezifikation
und Brandbook unter docs/craftvia/. ISMS-Module werden im Folgecommit entfernt.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

prisma/migrations/20260720183635_platform_admins/migration.sql

@@ -0,0 +1,46 @@
+-- DropForeignKey
+ALTER TABLE "audit_logs" DROP CONSTRAINT "audit_logs_tenant_id_fkey";
+
+-- AlterTable
+ALTER TABLE "audit_logs" ALTER COLUMN "tenant_id" DROP NOT NULL;
+
+-- CreateTable
+CREATE TABLE "platform_admins" (
+    "id" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "password_hash" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "status" TEXT NOT NULL DEFAULT 'ACTIVE',
+    "mfa_secret" TEXT,
+    "mfa_enrolled_at" TIMESTAMP(3),
+    "recovery_codes" JSONB NOT NULL DEFAULT '[]',
+    "failed_logins" INTEGER NOT NULL DEFAULT 0,
+    "locked_until" TIMESTAMP(3),
+    "last_login_at" TIMESTAMP(3),
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "platform_admins_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "platform_admins_email_key" ON "platform_admins"("email");
+
+-- AddForeignKey
+ALTER TABLE "audit_logs" ADD CONSTRAINT "audit_logs_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+
+-- Datenmigration (Phase-1-Härtung Paket 2): bestehende isPlatformAdmin-Nutzer in den
+-- getrennten PlatformAdmin-Store übernehmen (gleicher Argon2-Hash → Login sofort möglich)
+-- und das Mandanten-Flag zurücksetzen. MFA wird beim ersten Plattform-Login eingerichtet.
+INSERT INTO "platform_admins" ("id", "email", "password_hash", "name", "status", "recovery_codes", "failed_logins", "created_at", "updated_at")
+SELECT gen_random_uuid()::text, lower("email"), "password_hash", "name", 'ACTIVE', '[]'::jsonb, 0, now(), now()
+FROM "users"
+WHERE "is_platform_admin" = true
+ON CONFLICT ("email") DO NOTHING;
+
+UPDATE "users" SET "is_platform_admin" = false WHERE "is_platform_admin" = true;
+
+-- platform_admins ist plattformweit (kein tenant_id) → RLS bewusst NICHT aktiviert.
+-- Zugriff für die eingeschränkte App-Rolle (Härtungs-Iteration) explizit gewähren.
+GRANT SELECT, INSERT, UPDATE, DELETE ON "platform_admins" TO isms_app;