Remove Uptime Kuma integration

- Delete kuma_client.py and all Kuma-related code
- Remove /infrastructure/monitors endpoints
- Update service start/stop to use Portainer only
- Simplify service control widget to show container status
- Remove Kuma config and credentials
- Delete stale memory tests (moved to core-ai service)
- Add test infrastructure with pytest
- Add tests for service_groups, config, and health endpoints
- Bump version to 1.1.0

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/service_groups.py

@@ -10,7 +10,6 @@ ALWAYS_ON_SERVICES: Set[str] = {
     "portainer",
     "nginx-proxy-manager",
     "core-api",
-    "uptime-kuma",
     "organizr",
     "headscale",
     "watchtower",