fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

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

geo-service/config.py

@@ -0,0 +1,99 @@
+"""
+GeoEdu Service Configuration
+Environment-based configuration with Pydantic Settings
+"""
+from functools import lru_cache
+from typing import Optional
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    """Application settings loaded from environment variables."""
+
+    model_config = SettingsConfigDict(
+        env_file=".env",
+        env_file_encoding="utf-8",
+        case_sensitive=False,
+    )
+
+    # Service Config
+    port: int = 8088
+    environment: str = "development"
+    debug: bool = False
+
+    # JWT Authentication
+    jwt_secret: str = "your-super-secret-jwt-key"
+    jwt_algorithm: str = "HS256"
+    jwt_expiration_hours: int = 24
+
+    # PostgreSQL (PostGIS)
+    database_url: str = "postgresql+asyncpg://breakpilot:breakpilot123@postgres:5432/breakpilot_db"
+
+    # MinIO (S3-compatible storage)
+    minio_endpoint: str = "minio:9000"
+    minio_access_key: str = "breakpilot"
+    minio_secret_key: str = "breakpilot123"
+    minio_bucket: str = "breakpilot-geo"
+    minio_secure: bool = False
+
+    # Ollama (LLM for learning nodes)
+    ollama_base_url: str = "http://host.docker.internal:11434"
+    ollama_model: str = "qwen2.5:14b"
+    ollama_timeout: int = 120
+
+    # Data Directories
+    osm_data_dir: str = "/app/data/osm"
+    dem_data_dir: str = "/app/data/dem"
+    tile_cache_dir: str = "/app/cache/tiles"
+    bundle_dir: str = "/app/bundles"
+
+    # Tile Server Config
+    default_pmtiles_file: str = "germany.pmtiles"
+    tile_cache_max_size_gb: float = 50.0
+
+    # DEM Config
+    dem_resolution: str = "GLO-30"  # 30m Copernicus DEM
+    terrain_tile_size: int = 256
+
+    # AOI Limits (DSGVO data minimization)
+    max_aoi_size_km2: float = 4.0  # Max 4 km² per AOI
+    max_aoi_per_user: int = 10
+    aoi_retention_days: int = 30  # Auto-delete after 30 days
+
+    # Learning Nodes
+    max_nodes_per_aoi: int = 20
+    supported_themes: list[str] = [
+        "topographie",
+        "landnutzung",
+        "orientierung",
+        "geologie",
+        "hydrologie",
+        "vegetation",
+    ]
+
+    # CORS (for frontend access)
+    cors_origins: list[str] = [
+        "http://localhost:3000",
+        "http://localhost:3001",
+        "http://localhost:8088",
+    ]
+
+    @property
+    def pmtiles_path(self) -> str:
+        """Full path to PMTiles file."""
+        return f"{self.osm_data_dir}/{self.default_pmtiles_file}"
+
+    @property
+    def is_development(self) -> bool:
+        """Check if running in development mode."""
+        return self.environment == "development"
+
+
+@lru_cache
+def get_settings() -> Settings:
+    """Get cached settings instance."""
+    return Settings()
+
+
+# Export settings instance for convenience
+settings = get_settings()