diff --git a/.gitignore b/.gitignore
index b8969b8..60f9580 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,10 @@
 backend/node_modules/
 backend/.env
+
+# macOS metadata
+.DS_Store
+._.DS_Store
+
+# Playwright artifacts
+backend/playwright-report/
+backend/test-results/
diff --git a/NEXT_STEPS.md b/NEXT_STEPS.md
new file mode 100644
index 0000000..a12c5b7
--- /dev/null
+++ b/NEXT_STEPS.md
@@ -0,0 +1,30 @@
+# Nächste Schritte für helpyourneighbour
+
+## Aktueller Status
+- Smoke-Test erfolgreich ausgeführt
+- Docker nicht verfügbar (kein `docker` Befehl)
+- Integrationstests fehlgeschlagen wegen Playwright-Konfigurationsfehler
+- Es gibt 3 Commits, die noch nicht gepusht wurden
+- Es gibt drei ungetrackte Dateien (NEXT_STEPS.md, PROJECT_SUMMARY.md, STATUS.md)
+
+## Konkrete nächste Schritte
+
+1. **Docker-Installation prüfen**
+   - Prüfen, ob Docker auf dem System installiert ist
+   - Falls nicht, Installation vorbereiten
+
+2. **Playwright-Konfiguration reparieren**
+   - Fehlerursache der Integrationstests identifizieren
+   - Konfiguration korrigieren
+
+3. **Lokalen Test-Prozess optimieren**
+   - `cd backend && npm ci && npm test` ausführen
+   - Ergebnisse dokumentieren
+
+4. **Dokumentation aktualisieren**
+   - STATUS.md aktualisieren mit aktuellen Fehlern und Lösungen
+   - NEXT_STEPS.md als Planungsdokument verwenden
+
+5. **Git-Status aufräumen**
+   - Ungetrackte Dateien commiten oder löschen
+   - Push auf origin durchführen
\ No newline at end of file
diff --git a/PROJECT_SUMMARY.md b/PROJECT_SUMMARY.md
new file mode 100644
index 0000000..4c6edbf
--- /dev/null
+++ b/PROJECT_SUMMARY.md
@@ -0,0 +1,51 @@
+# HelpYourNeighbour Projektübersicht
+
+## Projektbeschreibung
+HelpYourNeighbour ist ein Backend-System für eine Plattform zur Unterstützung von Nachbarn. Es ermöglicht Nutzern, Hilfeanfragen zu stellen und anzubieten, sowie Deals abzuschließen und Bewertungen auszutauschen.
+
+## Hauptfunktionen
+1. **Authentifizierung**: Registrierung und Login
+2. **Hilfeanfragen**: Erstellen und Auflisten von Anfragen
+3. **Angebote**: Erstellen, Verhandeln und Akzeptieren von Angeboten
+4. **Bewertungssystem**: 2-14 Tage Verzögerung für Bewertungen
+5. **Adressmanagement**: Änderung von Adressen per Briefbestätigung
+6. **Kontaktdaten-Austausch**: Nach Deal abgeschlossen
+
+## Datenbankschema
+Das System verwendet ein MySQL-Datenbankschema mit folgenden Tabellen:
+- users: Nutzerdaten
+- help_requests: Hilfeanfragen
+- offers: Angebote
+- negotiations: Verhandlungen
+- deals: Abschlüsse
+- contact_exchange_requests: Kontaktanfragen
+- addresses: Adressen
+- address_change_requests: Adressänderungsanfragen
+- reviews: Bewertungen
+
+## Technologie Stack
+- Backend: Node.js mit Express
+- Datenbank: MySQL
+- Authentifizierung: JWT
+- Verschlüsselung: AES-256-GCM für sensible Daten
+- Validierung: Zod
+- Tests: Playwright (Integration), Custom (Smoke)
+
+## Testumgebung
+- Smoke-Tests funktionieren
+- Integrationstests haben Playwright-Konfigurationsprobleme
+- Docker-basierte Testumgebung vorhanden, aber keine lokale Docker-Installation
+
+## Konfiguration
+Die .env.example zeigt die Produktionskonfiguration mit externer Datenbank:
+- DB_HOST=80.74.142.125
+- DB_PORT=3306
+- DB_NAME=helpyourneighbour
+- DB_USER=helpyourneighbour
+- DB_PASSWORD=change-me
+
+## Nächste Schritte für Entwicklung
+1. Lokale MySQL-Datenbank einrichten
+2. Docker-Installation prüfen oder installieren
+3. Testumgebung vollständig aufbauen
+4. Integrationstests reparieren
\ No newline at end of file
diff --git a/README.md b/README.md
index 5d2dff6..9996495 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,13 @@ npm run start
 - OpenAPI: `openapi.yaml` (Spiegel: `docs/openapi.yaml`)
 - Versioning/Deprecation Policy: `docs/api-versioning.md`
 - Rollen- und Rechtekonzept: `docs/roles-and-permissions.md`
+
+## Development Quickstart (auto-synced)
+
+```bash
+cd backend
+npm install
+npm test
+npm run start
+```
+
diff --git a/STATUS.md b/STATUS.md
new file mode 100644
index 0000000..0edb19a
--- /dev/null
+++ b/STATUS.md
@@ -0,0 +1,22 @@
+# Status des HelpYourNeighbour Projekts
+
+## Aktueller Stand
+- Projekt ist ein Backend für eine Hilfeplattform mit Auth, Requests, Offers, Deals, Reviews, Address-Management
+- Datenbank-Schema ist vollständig implementiert
+- Backend verwendet Node.js mit Express, MySQL, bcryptjs, jsonwebtoken, zod
+- Es gibt Test-Skripte für Smoke- und Integrationstests
+
+## Getestete Funktionen
+- Smoke-Test erfolgreich: Syntax Checks OK
+- Integrationstests fehlgeschlagen: Playwright-Konfigurationsfehler
+- Datenbankinitialisierung fehlgeschlagen: Keine MySQL-Datenbank verfügbar
+
+## Verfügbare Konfigurationen
+- .env.example zeigt Produktionskonfiguration für externe Datenbank
+- Docker Compose Test-Umgebung vorhanden, aber keine lokale Docker-Installation
+
+## Nächste Schritte
+1. Lokale MySQL-Datenbank einrichten für Entwicklung
+2. Backend mit lokaler Datenbank testen
+3. Integrationstests reparieren oder anpassen
+4. Vollständige Entwicklungsumgebung aufbauen
\ No newline at end of file
diff --git a/backend/package-lock.json b/backend/package-lock.json
index fafb01e..f3e6fe3 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -15,6 +15,26 @@
         "jsonwebtoken": "^9.0.3",
         "mysql2": "^3.18.2",
         "zod": "^4.3.6"
+      },
+      "devDependencies": {
+        "@playwright/test": "^1.58.2",
+        "playwright": "^1.58.2"
+      }
+    },
+    "node_modules/@playwright/test": {
+      "version": "1.58.2",
+      "resolved": "https://registry.npmjs.org/@playwright/test/-/test-1.58.2.tgz",
+      "integrity": "sha512-akea+6bHYBBfA9uQqSYmlJXn61cTa+jbO87xVLCWbTqbWadRVmhxlXATaOjOgcBaWU4ePo0wB41KMFv3o35IXA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright": "1.58.2"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
       }
     },
     "node_modules/@types/node": {
@@ -378,6 +398,21 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/fsevents": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/function-bind": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/function-bind/-/function-bind-1.1.2.tgz",
@@ -794,6 +829,38 @@
         "url": "https://opencollective.com/express"
       }
     },
+    "node_modules/playwright": {
+      "version": "1.58.2",
+      "resolved": "https://registry.npmjs.org/playwright/-/playwright-1.58.2.tgz",
+      "integrity": "sha512-vA30H8Nvkq/cPBnNw4Q8TWz1EJyqgpuinBcHET0YVJVFldr8JDNiU9LaWAE1KqSkRYazuaBhTpB5ZzShOezQ6A==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "playwright-core": "1.58.2"
+      },
+      "bin": {
+        "playwright": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "optionalDependencies": {
+        "fsevents": "2.3.2"
+      }
+    },
+    "node_modules/playwright-core": {
+      "version": "1.58.2",
+      "resolved": "https://registry.npmjs.org/playwright-core/-/playwright-core-1.58.2.tgz",
+      "integrity": "sha512-yZkEtftgwS8CsfYo7nm0KE8jsvm6i/PTgVtB8DL726wNf6H2IMsDuxCpJj59KDaxCtSnrWan2AeDqM7JBaultg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "playwright-core": "cli.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/proxy-addr": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
diff --git a/backend/package.json b/backend/package.json
index 28162e3..af10e91 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "backend",
-  "comment": "added by heartbeat"
+  "comment": "added by heartbeat",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
@@ -10,7 +10,8 @@
     "dev": "node --watch src/server.js",
     "db:init": "node src/db/init.js",
     "db:seed": "node src/db/seed.js",
-    "test:smoke": "node scripts/smoke-test.mjs"
+    "test:smoke": "node scripts/smoke-test.mjs",
+    "test:integration": "node scripts/integration-test.mjs"
   },
   "keywords": [],
   "author": "",
@@ -23,5 +24,9 @@
     "jsonwebtoken": "^9.0.3",
     "mysql2": "^3.18.2",
     "zod": "^4.3.6"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.58.2",
+    "playwright": "^1.58.2"
   }
 }
diff --git a/backend/playwright.config.js b/backend/playwright.config.js
new file mode 100644
index 0000000..d2fc64f
--- /dev/null
+++ b/backend/playwright.config.js
@@ -0,0 +1,27 @@
+const { defineConfig, devices } = require('@playwright/test');
+
+module.exports = defineConfig({
+  testDir: './tests',
+  timeout: 30000,
+  expect: {
+    timeout: 5000
+  },
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: 'html',
+  use: {
+    actionTimeout: 0,
+    baseURL: 'http://localhost:3000',
+    trace: 'on-first-retry',
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: {
+        ...devices['Desktop Chrome'],
+      },
+    },
+  ],
+});
\ No newline at end of file
diff --git a/backend/playwright.config.mjs b/backend/playwright.config.mjs
new file mode 100644
index 0000000..d063a8f
--- /dev/null
+++ b/backend/playwright.config.mjs
@@ -0,0 +1,27 @@
+import { defineConfig } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './tests',
+  timeout: 30000,
+  expect: {
+    timeout: 5000
+  },
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: 'html',
+  use: {
+    actionTimeout: 0,
+    baseURL: 'http://localhost:3000',
+    trace: 'on-first-retry',
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: {
+        // ...devices['Desktop Chrome'],
+      },
+    },
+  ],
+});
\ No newline at end of file
diff --git a/backend/scripts/integration-test.mjs b/backend/scripts/integration-test.mjs
new file mode 100644
index 0000000..4cb2951
--- /dev/null
+++ b/backend/scripts/integration-test.mjs
@@ -0,0 +1,24 @@
+// Einfacher HTTP-Test ohne Playwright
+// Funktion zum Senden einer HTTP-Anfrage
+async function testHealthEndpoint() {
+  try {
+    const response = await fetch('http://localhost:3000/health');
+    if (response.status === 200) {
+      console.log('Integration test passed: API server is running and healthy');
+      return true;
+    } else {
+      console.error(`Integration test failed: Expected status 200, got ${response.status}`);
+      return false;
+    }
+  } catch (error) {
+    console.error('Integration test failed:', error.message);
+    return false;
+  }
+}
+
+// Führe den Test aus
+testHealthEndpoint().then(success => {
+  if (!success) {
+    process.exit(1);
+  }
+});
\ No newline at end of file
diff --git a/backend/src/services/encryption.test.js b/backend/src/services/encryption.test.js
new file mode 100644
index 0000000..ce20df1
--- /dev/null
+++ b/backend/src/services/encryption.test.js
@@ -0,0 +1,23 @@
+import { encryptText, decryptText } from './encryption.js';
+
+const TEST_KEY = 'YixWi1MYh77NMEQYSJZR+2IsVotTGIe+zTBEGEiWUfs='; // 32 bytes base64
+
+process.env.DATA_ENCRYPTION_KEY = TEST_KEY;
+
+const run = async () => {
+  const plain = 'Hello, World! 123';
+  const encrypted = encryptText(plain);
+  const decrypted = decryptText(encrypted);
+
+  if (decrypted !== plain) {
+    console.error('Decryption mismatch:', { plain, decrypted });
+    process.exit(1);
+  }
+
+  console.log('Encryption tests passed');
+};
+
+run().catch((err) => {
+  console.error('Encryption tests failed:', err.message);
+  process.exit(1);
+});
\ No newline at end of file
diff --git a/backend/tests/integration-test.spec.js b/backend/tests/integration-test.spec.js
new file mode 100644
index 0000000..0cb61c0
--- /dev/null
+++ b/backend/tests/integration-test.spec.js
@@ -0,0 +1,7 @@
+import { test, expect } from '@playwright/test';
+
+test('API server starts and returns 200', async ({ page }) => {
+  await page.goto('http://localhost:3000/api/health');
+  const status = await page.status();
+  expect(status).toBe(200);
+});
\ No newline at end of file
diff --git a/docs/plans/2026-03-06-bitte-arbeite-helpyourneighbour-weiter.md b/docs/plans/2026-03-06-bitte-arbeite-helpyourneighbour-weiter.md
new file mode 100644
index 0000000..ed32c0e
--- /dev/null
+++ b/docs/plans/2026-03-06-bitte-arbeite-helpyourneighbour-weiter.md
@@ -0,0 +1,26 @@
+# Goal Plan: Bitte arbeite an helpyourneighbour weiter
+
+- Project: helpyourneighbour
+- Created: 2026-03-06T14:36:11Z
+- Mode: general
+- Source: user-intake
+
+## Goal
+Bitte arbeite an helpyourneighbour weiter
+
+## Success Criteria
+- [ ] Repo state refreshed
+- [ ] Strongest available verification executed
+- [ ] Goal brief written
+- [ ] First concrete local target identified
+- [ ] Result verified or precise blocker documented
+
+## Immediate Work Queue
+- [ ] Refresh project snapshot for current goal
+- [ ] Run the strongest available verification for current goal
+- [ ] Create implementation brief for current goal
+- [ ] Identify first concrete local change targets for current goal
+
+## Notes
+- Created by `intake_goal`.
+- This file is intentionally short; execution artifacts belong in `docs/runtime/`.
diff --git a/docs/plans/2026-03-06-continue-working-the-helpyourneighbour-project-after.md b/docs/plans/2026-03-06-continue-working-the-helpyourneighbour-project-after.md
new file mode 100644
index 0000000..78a759e
--- /dev/null
+++ b/docs/plans/2026-03-06-continue-working-the-helpyourneighbour-project-after.md
@@ -0,0 +1,26 @@
+# Goal Plan: Continue working on the helpyourneighbour project after heartbeat
+
+- Project: helpyourneighbour
+- Created: 2026-03-06T09:13:41Z
+- Mode: general
+- Source: user-intake
+
+## Goal
+Continue working on the helpyourneighbour project after heartbeat
+
+## Success Criteria
+- [ ] Repo state refreshed
+- [ ] Strongest available verification executed
+- [ ] Goal brief written
+- [ ] First concrete local target identified
+- [ ] Result verified or precise blocker documented
+
+## Immediate Work Queue
+- [ ] Refresh project snapshot for current goal
+- [ ] Run the strongest available verification for current goal
+- [ ] Create implementation brief for current goal
+- [ ] Identify first concrete local change targets for current goal
+
+## Notes
+- Created by `intake_goal`.
+- This file is intentionally short; execution artifacts belong in `docs/runtime/`.
diff --git a/docs/plans/2026-03-06-implement-the-next-concrete-improvement-for.md b/docs/plans/2026-03-06-implement-the-next-concrete-improvement-for.md
new file mode 100644
index 0000000..0e69844
--- /dev/null
+++ b/docs/plans/2026-03-06-implement-the-next-concrete-improvement-for.md
@@ -0,0 +1,26 @@
+# Goal Plan: Implement the next concrete improvement for the active project and keep working autonomously until the next precise blocker.
+
+- Project: helpyourneighbour
+- Created: 2026-03-06T09:08:57Z
+- Mode: coding
+- Source: user-intake
+
+## Goal
+Implement the next concrete improvement for the active project and keep working autonomously until the next precise blocker.
+
+## Success Criteria
+- [ ] Repo state refreshed
+- [ ] Strongest available verification executed
+- [ ] Goal brief written
+- [ ] First concrete local target identified
+- [ ] Result verified or precise blocker documented
+
+## Immediate Work Queue
+- [ ] Refresh project snapshot for current goal
+- [ ] Run the strongest available verification for current goal
+- [ ] Create implementation brief for current goal
+- [ ] Identify first concrete local change targets for current goal
+
+## Notes
+- Created by `intake_goal`.
+- This file is intentionally short; execution artifacts belong in `docs/runtime/`.
diff --git a/docs/plans/2026-03-06-initial-session-startup-and-greeting.md b/docs/plans/2026-03-06-initial-session-startup-and-greeting.md
new file mode 100644
index 0000000..35adbbe
--- /dev/null
+++ b/docs/plans/2026-03-06-initial-session-startup-and-greeting.md
@@ -0,0 +1,26 @@
+# Goal Plan: Initial session startup and greeting
+
+- Project: helpyourneighbour
+- Created: 2026-03-06T09:33:28Z
+- Mode: runtime
+- Source: user-intake
+
+## Goal
+Initial session startup and greeting
+
+## Success Criteria
+- [ ] Repo state refreshed
+- [ ] Strongest available verification executed
+- [ ] Goal brief written
+- [ ] First concrete local target identified
+- [ ] Result verified or precise blocker documented
+
+## Immediate Work Queue
+- [ ] Refresh project snapshot for current goal
+- [ ] Run the strongest available verification for current goal
+- [ ] Create implementation brief for current goal
+- [ ] Identify first concrete local change targets for current goal
+
+## Notes
+- Created by `intake_goal`.
+- This file is intentionally short; execution artifacts belong in `docs/runtime/`.
diff --git a/docs/plans/2026-03-06-nein-einfach-fortfahren-mit-der-arbeit.md b/docs/plans/2026-03-06-nein-einfach-fortfahren-mit-der-arbeit.md
new file mode 100644
index 0000000..d7bed28
--- /dev/null
+++ b/docs/plans/2026-03-06-nein-einfach-fortfahren-mit-der-arbeit.md
@@ -0,0 +1,26 @@
+# Goal Plan: nein einfach fortfahren mit der arbeit
+
+- Project: helpyourneighbour
+- Created: 2026-03-06T12:07:13Z
+- Mode: general
+- Source: user-intake
+
+## Goal
+nein einfach fortfahren mit der arbeit
+
+## Success Criteria
+- [ ] Repo state refreshed
+- [ ] Strongest available verification executed
+- [ ] Goal brief written
+- [ ] First concrete local target identified
+- [ ] Result verified or precise blocker documented
+
+## Immediate Work Queue
+- [ ] Refresh project snapshot for current goal
+- [ ] Run the strongest available verification for current goal
+- [ ] Create implementation brief for current goal
+- [ ] Identify first concrete local change targets for current goal
+
+## Notes
+- Created by `intake_goal`.
+- This file is intentionally short; execution artifacts belong in `docs/runtime/`.
diff --git a/docs/plans/2026-03-06-start.md b/docs/plans/2026-03-06-start.md
new file mode 100644
index 0000000..0cbf6fa
--- /dev/null
+++ b/docs/plans/2026-03-06-start.md
@@ -0,0 +1,26 @@
+# Goal Plan: start
+
+- Project: helpyourneighbour
+- Created: 2026-03-06T10:57:22Z
+- Mode: runtime
+- Source: user-intake
+
+## Goal
+start
+
+## Success Criteria
+- [ ] Repo state refreshed
+- [ ] Strongest available verification executed
+- [ ] Goal brief written
+- [ ] First concrete local target identified
+- [ ] Result verified or precise blocker documented
+
+## Immediate Work Queue
+- [ ] Refresh project snapshot for current goal
+- [ ] Run the strongest available verification for current goal
+- [ ] Create implementation brief for current goal
+- [ ] Identify first concrete local change targets for current goal
+
+## Notes
+- Created by `intake_goal`.
+- This file is intentionally short; execution artifacts belong in `docs/runtime/`.
diff --git a/docs/runtime/next_actions_helpyourneighbour.md b/docs/runtime/next_actions_helpyourneighbour.md
new file mode 100644
index 0000000..c3ac8a2
--- /dev/null
+++ b/docs/runtime/next_actions_helpyourneighbour.md
@@ -0,0 +1,2 @@
+# Auto Next Actions (helpyourneighbour)
+Generated: 2026-03-05T23:29:37Z
diff --git a/scripts/test-in-docker.sh b/scripts/test-in-docker.sh
index 1378888..4b564f7 100755
--- a/scripts/test-in-docker.sh
+++ b/scripts/test-in-docker.sh
@@ -3,5 +3,5 @@ set -euo pipefail
 
 cd "$(dirname "$0")/.."
 
-docker compose -f docker-compose.test.yml build --no-cache backend-test
+unraidctl docker compose -f docker-compose.test.yml build --no-cache backend-test
 docker compose -f docker-compose.test.yml run --rm backend-test