feat: Phase 3 Tasks 16-18 — Pydantic-Settings, Error-Handler, systemd

src/app.py

@@ -1,7 +1,11 @@
 """Flask App-Factory – Einstiegspunkt des BSN-Livesystems."""
 
+from __future__ import annotations
+
 from flask import Flask
 
+from src.config import settings
+from src.error_handler import register_error_handlers
 from src.logging_config import setup_logging
 from src.queue.handler import QueueHandler
 
@@ -18,15 +22,11 @@ def create_app() -> Flask:
     app = Flask(__name__)
 
     setup_logging()
-
-    app.config.from_mapping(
-        REDIS_HOST="localhost",
-        REDIS_PORT=6379,
-    )
+    register_error_handlers(app)
 
     app.queue_handler = QueueHandler(
-        redis_host=app.config["REDIS_HOST"],
-        redis_port=app.config["REDIS_PORT"],
+        redis_host=settings.REDIS_HOST,
+        redis_port=settings.REDIS_PORT,
     )
 
     @app.route("/health")
@@ -34,4 +34,4 @@ def create_app() -> Flask:
         """Health-Check Endpoint für Monitoring."""
         return {"status": "ok", "queue_size": app.queue_handler.queue_size()}
 
-    return app
+    return app