Add GeoGuesser AI app to store

New CasaOS app for AI-powered geographic image location analysis.
Features:
- Three-tier architecture (PostgreSQL, Backend API, Frontend)
- Claude AI integration for image analysis
- All environment variables configurable
- Only frontend port exposed externally
- Container registry authentication required

Note: Icon file (icon.png) still needs to be added.

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

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

Apps/geoguesser-ai/README.md

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+# GeoGuesser AI - CasaOS App
+
+## Icon Required
+This app needs an icon file (icon.png) to be added to this directory.
+
+The icon should be:
+- PNG format
+- Square dimensions (recommended: 256x256 or 512x512)
+- Represents geographic/location analysis theme
+
+## Authentication Setup
+This app requires authentication to pull container images from git.hinrichs.dev.
+
+On the CasaOS host system, configure Docker/Podman authentication:
+```bash
+docker login git.hinrichs.dev
+```
+
+Or create/update ~/.docker/config.json with credentials.
+
+## Environment Variables
+All environment variables from the original .env file are configurable during installation:
+
+### Required
+- `CLAUDE_API_KEY`: Anthropic Claude API key (get from https://console.anthropic.com/)
+
+### Database (defaults provided)
+- `DB_USER`: PostgreSQL username (default: geolocator)
+- `DB_PASSWORD`: PostgreSQL password (default: geolocator_password)
+- `DB_NAME`: PostgreSQL database name (default: geolocator_db)
+- `DB_SSLMODE`: SSL mode for database (default: disable)
+
+### Application Settings
+- `ENV`: Application environment (default: production)
+- `PORT`: Backend API port (default: 3000)
+- `CLAUDE_MODEL`: Claude model to use (default: claude-sonnet-4-5)
+- `CLAUDE_API_URL`: Claude API endpoint (default: https://api.anthropic.com/v1/messages)
+- `USE_MOCK_AI`: Use mock AI for testing (default: false)
+
+### File Upload
+- `MAX_IMAGE_SIZE_MB`: Maximum image upload size (default: 10)
+- `ALLOWED_IMAGE_TYPES`: Allowed MIME types (default: image/jpeg,image/png,image/webp)
+
+### External APIs
+- `OVERPASS_API_URL`: OpenStreetMap Overpass API (default: https://overpass-api.de/api/interpreter)
+- `ELEVATION_API_URL`: Elevation API (default: https://api.open-elevation.com/api/v1/lookup)
+
+### CORS & Logging
+- `ALLOWED_ORIGINS`: CORS allowed origins (default: http://localhost:8080)
+- `LOG_LEVEL`: Log level (default: info)
+- `LOG_FORMAT`: Log format (default: json)
+
+## Ports
+- 8080: Web UI (exposed externally)
+- 3000: Backend API (internal only)
+- 5432: PostgreSQL (internal only)
+
+## Volumes
+- `/DATA/AppData/$AppID/postgres_data`: PostgreSQL database storage
+- `/DATA/AppData/$AppID/uploads`: Uploaded images storage