Kartenfeature: Geoparsing + Leaflet-Karte im Dashboard

- Neues Geoparsing-Modul (spaCy NER + geonamescache/Nominatim)
- article_locations-Tabelle mit Migration
- Pipeline-Integration nach Artikel-Speicherung
- API-Endpunkt GET /incidents/{id}/locations
- Leaflet.js + MarkerCluster im Dashboard-Grid
- Theme-aware Kartenkacheln (CartoDB dark / OSM light)
- Gold-Akzent MarkerCluster, Popup mit Artikelliste

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

src/database.py

@@ -167,6 +167,22 @@ CREATE TABLE IF NOT EXISTS incident_subscriptions (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     UNIQUE(user_id, incident_id)
 );
+
+CREATE TABLE IF NOT EXISTS article_locations (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    article_id INTEGER REFERENCES articles(id) ON DELETE CASCADE,
+    incident_id INTEGER REFERENCES incidents(id) ON DELETE CASCADE,
+    location_name TEXT NOT NULL,
+    location_name_normalized TEXT,
+    country_code TEXT,
+    latitude REAL NOT NULL,
+    longitude REAL NOT NULL,
+    confidence REAL DEFAULT 0.0,
+    source_text TEXT,
+    tenant_id INTEGER REFERENCES organizations(id)
+);
+CREATE INDEX IF NOT EXISTS idx_article_locations_incident ON article_locations(incident_id);
+CREATE INDEX IF NOT EXISTS idx_article_locations_article ON article_locations(article_id);
 """
 
 
@@ -366,6 +382,29 @@ async def init_db():
             except Exception:
                 pass
 
+        # Migration: article_locations-Tabelle (fuer bestehende DBs)
+        cursor = await db.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='article_locations'")
+        if not await cursor.fetchone():
+            await db.executescript("""
+                CREATE TABLE IF NOT EXISTS article_locations (
+                    id INTEGER PRIMARY KEY AUTOINCREMENT,
+                    article_id INTEGER REFERENCES articles(id) ON DELETE CASCADE,
+                    incident_id INTEGER REFERENCES incidents(id) ON DELETE CASCADE,
+                    location_name TEXT NOT NULL,
+                    location_name_normalized TEXT,
+                    country_code TEXT,
+                    latitude REAL NOT NULL,
+                    longitude REAL NOT NULL,
+                    confidence REAL DEFAULT 0.0,
+                    source_text TEXT,
+                    tenant_id INTEGER REFERENCES organizations(id)
+                );
+                CREATE INDEX IF NOT EXISTS idx_article_locations_incident ON article_locations(incident_id);
+                CREATE INDEX IF NOT EXISTS idx_article_locations_article ON article_locations(article_id);
+            """)
+            await db.commit()
+            logger.info("Migration: article_locations-Tabelle erstellt")
+
         # Verwaiste running-Eintraege beim Start als error markieren (aelter als 15 Min)
         await db.execute(
             """UPDATE refresh_log SET status = 'error', error_message = 'Verwaist beim Neustart',