Weather: Replace wttr.in with Open-Meteo + structured logging

- Replace wttr.in (unreachable from Docker) with Open-Meteo API
  (free, no API key, reliable) with geocoding cache
- WMO weather codes mapped to German descriptions + emoji icons
- Add [WEATHER], [NEWS], [UNRAID], [DASHBOARD] log prefixes
- Structured integration status table on startup
- Suppress noisy httpx INFO logs (services log their own summaries)
- Add logging to unraid_service (was completely silent on errors)

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

server/services/unraid_service.py

@@ -1,10 +1,13 @@
 from __future__ import annotations
 
 import asyncio
+import logging
 import httpx
 from dataclasses import dataclass, field
 from typing import Any, Dict, List, Optional
 
+logger = logging.getLogger(__name__)
+
 
 @dataclass
 class ServerConfig:
@@ -114,9 +117,14 @@ async def _try_api_endpoint(
             _parse_system_info(data, result)
             _parse_array_info(data, result)
             _parse_docker_info(data, result)
+            logger.info("[UNRAID] %s (%s): API OK", server.name, server.host)
             return True
-    except Exception:
-        pass
+        else:
+            logger.warning("[UNRAID] %s (%s): /api/system returned HTTP %d",
+                          server.name, server.host, resp.status_code)
+    except Exception as exc:
+        logger.warning("[UNRAID] %s (%s): /api/system failed: %s",
+                      server.name, server.host, exc)
 
     # Try individual endpoints if the combined one failed
     fetched_any = False
@@ -208,11 +216,16 @@ async def fetch_server_stats(server: ServerConfig) -> Dict[str, Any]:
             api_ok = await _try_api_endpoint(client, server, result)
 
             if not api_ok and not result["online"]:
+                logger.info("[UNRAID] %s: API failed, trying connectivity check", server.name)
                 await _try_connectivity_check(client, server, result)
 
     except Exception as exc:
         result["online"] = False
         result["error"] = str(exc)
+        logger.error("[UNRAID] %s (%s): connection failed: %s", server.name, server.host, exc)
+
+    if not result["online"]:
+        logger.warning("[UNRAID] %s (%s): offline (error=%s)", server.name, server.host, result.get("error"))
 
     return result