feat: Phase 3 Tasks 23-25 + Quality-Gate-Fixes

Task 23: Worker-Intake-Pipeline verbinden
- ergebnis-Feld in Submission/Payload
- worker.py extrahiert + worker_loop refactor
- test_worker.py mit VerarbeiteSubmission/WorkerLoop tests

Task 24: Admin-Stats mit echten Daten
- processed_total, uptime, error_rate, VERSION
- admin_health mit Redis-Live-Daten

Task 25: E2E-Integrationstest + worker_refaktorisiert

Quality-Gate-Fixes:
- consumername Collision: 'worker-1' -> f'worker-{id(self)}'
- fakeredis block=0 Timeout fix
- WhatsApp/Telegram webhook payload fixes
- test_telegram/integration/e2e/refaktorisiert
- handler.py recovery nach corrupted Patch

tests/test_admin_extended.py

@@ -0,0 +1,137 @@
+"""Tests für admin-Route."""
+
+from unittest.mock import MagicMock, patch
+
+import fakeredis
+import pytest
+import redis as _real_redis
+from flask import Flask
+
+from src.app import create_app
+from src.routes.admin import admin_bp
+
+
+class _FakeRedis:
+    @staticmethod
+    def exceptions():
+        return _real_redis.exceptions
+
+    def __init__(self, *args, **kwargs):
+        self._conn = fakeredis.FakeStrictRedis(decode_responses=True)
+
+    def __getattr__(self, name):
+        return getattr(self._conn, name)
+
+
+@pytest.fixture
+def flask_app() -> Flask:
+    """Erstellt Flask-App mit admin Blueprint."""
+    app = create_app()
+    app.queue_handler = MagicMock()
+    app.queue_handler.queue_size.return_value = 0
+    app.register_blueprint(admin_bp, name="admin_extended", url_prefix="/")
+    return app
+
+
+class TestAdminStats:
+    """Tests für Admin-Stats."""
+
+    def test_admin_queue(self, flask_app: Flask) -> None:
+        """Admin/queue gibt Queue-Status zurück."""
+        with flask_app.test_client() as client:
+            response = client.get("/admin/queue")
+            assert response.status_code == 200
+            data = response.get_json()
+            assert "queue_size" in data
+            assert "processed_total" in data
+            assert data["status"] == "ok"
+
+    def test_admin_stats(self, flask_app: Flask) -> None:
+        """Admin/stats gibt echte Metriken zurück."""
+        with flask_app.test_client() as client:
+            response = client.get("/admin/stats")
+            assert response.status_code == 200
+            data = response.get_json()
+            assert "queue_size" in data
+            assert "processed_total" in data
+            assert "processed_errors" in data
+            assert "error_rate" in data
+            assert "uptime" in data
+            assert "version" in data
+            assert "status" in data
+
+    def test_admin_health(self, flask_app: Flask) -> None:
+        """Admin/health gibt Health-Check zurück."""
+        with flask_app.test_client() as client:
+            response = client.get("/admin/health")
+            assert response.status_code == 200
+            data = response.get_json()
+            assert "status" in data
+            assert "redis" in data
+            assert "version" in data
+
+
+class TestAdminRoute:
+    """Tests für Admin-Route."""
+
+    def test_admin_queue_status(self, flask_app: Flask) -> None:
+        """GET /admin/queue → Queue-Status."""
+        mock_qh = MagicMock()
+        mock_qh.queue_size.return_value = 5
+        mock_qh.redis.smembers.return_value = {"msg1", "msg2", "msg3"}
+        flask_app.queue_handler = mock_qh
+
+        with flask_app.test_client() as client:
+            response = client.get("/admin/queue")
+            assert response.status_code == 200
+            data = response.get_json()
+            assert data["queue_size"] == 5
+            assert data["processed_total"] == 3
+            assert data["status"] == "ok"
+
+    def test_admin_stats_extended(self, flask_app: Flask) -> None:
+        """GET /admin/stats → erweiterte Metriken."""
+        mock_qh = MagicMock()
+        mock_qh.queue_size.return_value = 0
+        mock_qh.redis.smembers.return_value = {"msg1", "msg2"}
+        mock_qh.redis.get.return_value = 1
+        flask_app.queue_handler = mock_qh
+
+        with flask_app.test_client() as client:
+            response = client.get("/admin/stats")
+            assert response.status_code == 200
+            data = response.get_json()
+
+            assert "queue_size" in data
+            assert "processed_total" in data
+            assert "processed_errors" in data
+            assert "error_rate" in data
+            assert "uptime" in data
+            assert "version" in data
+            assert data["status"] == "running"
+
+    def test_admin_health_with_redis(self, flask_app: Flask) -> None:
+        """GET /admin/health → healthy wenn Redis da."""
+        mock_qh = MagicMock()
+        mock_qh.redis.ping.return_value = True
+        flask_app.queue_handler = mock_qh
+
+        with flask_app.test_client() as client:
+            response = client.get("/admin/health")
+            assert response.status_code == 200
+            data = response.get_json()
+            assert data["status"] == "healthy"
+            assert data["redis"] == "connected"
+
+    def test_admin_health_without_redis(self, flask_app: Flask) -> None:
+        """GET /admin/health → degraded wenn Redis fehlt."""
+        mock_qh = MagicMock()
+        mock_qh.redis.ping.side_effect = Exception("Connection refused")
+        flask_app.queue_handler = mock_qh
+
+        with flask_app.test_client() as client:
+            response = client.get("/admin/health")
+            assert response.status_code == 200
+            data = response.get_json()
+            assert data["status"] == "degraded"
+            assert data["redis"] == "disconnected"