feat: complete tOS project with HR, LEAN, Dashboard and Integrations modules

Full enterprise web operating system including:
- Next.js 14 frontend with App Router, i18n (DE/EN), shadcn/ui
- NestJS 10 backend with Prisma, JWT auth, Swagger docs
- Keycloak 24 SSO with role-based access control
- HR module (employees, time tracking, absences, org chart)
- LEAN module (3S planning, morning meeting SQCDM, skill matrix)
- Integrations module (PlentyONE, Zulip, Todoist, FreeScout, Nextcloud, ecoDMS, GembaDocs)
- Dashboard with customizable drag & drop widget grid
- Docker Compose infrastructure (PostgreSQL 16, Redis 7, Keycloak 24)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

turbo.json

@@ -0,0 +1,65 @@
+{
+  "$schema": "https://turbo.build/schema.json",
+  "globalDependencies": [".env", ".env.local"],
+  "tasks": {
+    "build": {
+      "dependsOn": ["^build"],
+      "outputs": ["dist/**", ".next/**", "!.next/cache/**"],
+      "env": [
+        "NODE_ENV",
+        "DATABASE_URL",
+        "NEXTAUTH_SECRET",
+        "NEXTAUTH_URL",
+        "KEYCLOAK_ID",
+        "KEYCLOAK_SECRET",
+        "KEYCLOAK_ISSUER"
+      ]
+    },
+    "dev": {
+      "cache": false,
+      "persistent": true
+    },
+    "lint": {
+      "dependsOn": ["^build"],
+      "outputs": []
+    },
+    "lint:fix": {
+      "dependsOn": ["^build"],
+      "outputs": []
+    },
+    "test": {
+      "dependsOn": ["^build"],
+      "outputs": ["coverage/**"],
+      "env": ["NODE_ENV", "DATABASE_URL"]
+    },
+    "test:watch": {
+      "cache": false,
+      "persistent": true
+    },
+    "test:e2e": {
+      "dependsOn": ["^build"],
+      "outputs": [],
+      "env": ["NODE_ENV", "DATABASE_URL", "NEXTAUTH_URL"]
+    },
+    "typecheck": {
+      "dependsOn": ["^build"],
+      "outputs": []
+    },
+    "clean": {
+      "cache": false
+    },
+    "db:generate": {
+      "cache": false
+    },
+    "db:push": {
+      "cache": false
+    },
+    "db:migrate": {
+      "cache": false
+    },
+    "db:seed": {
+      "cache": false,
+      "dependsOn": ["db:migrate"]
+    }
+  }
+}