Incident-Response: sources_json nur noch via Lazy-Endpunkt, Sidebar schlank

Backend:
- IncidentResponse: sources_json-Feld entfernt (Detail-GET liefert es
  nicht mehr mit).
- Neues Schema IncidentListItem fuer GET /incidents (Sidebar):
  Ohne summary, ohne sources_json. Ein has_summary-Bit fuer
  Erster-Refresh-Erkennung, description bleibt fuer das Edit-Modal.
- list_incidents selektiert nur die noetigen Spalten (kein SELECT *)
  — spart bei grossen Lagen Speicher + Serialisierung.
- Neuer Endpunkt GET /incidents/{id}/sources liefert geparstes
  Sources-Array fuer Zitate-Lookups (Lazy).

Frontend:
- api.js: getIncidentSources(id).
- app.js: loadIncidentDetail laedt /sources parallel, speichert Array
  in _currentSources. Alle renderSummary/Zusammenfassung/
  LatestDevelopments-Aufrufe bekommen jetzt _currentSources statt
  incident.sources_json. inc.summary-Checks -> inc.has_summary.
- components.js: _parseSources(input) akzeptiert Array ODER String
  (Rueckwaertskompatibilitaet). renderZusammenfassung, renderSummary,
  renderLatestDevelopments nutzen den Helper.

Hintergrund: Die Sidebar-Liste lieferte bei 17 Lagen 1,23 MB
(Iran allein 386 KB wegen sources_json + summary). Detail-Endpunkt
lieferte sources_json (324 KB bei Iran) bei jedem Oeffnen mit.
Beides jetzt radikal kleiner — die 324 KB Sources gibt's nur
einmalig auf Anfrage.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/routers/incidents.py

@@ -1,7 +1,7 @@
 """Incidents-Router: Lagen verwalten (Multi-Tenant)."""
 from fastapi import APIRouter, BackgroundTasks, Depends, HTTPException, Query, status
 from fastapi.responses import StreamingResponse
-from models import IncidentCreate, IncidentUpdate, IncidentResponse, SubscriptionUpdate, SubscriptionResponse, DescriptionEnhanceRequest
+from models import IncidentCreate, IncidentUpdate, IncidentResponse, IncidentListItem, SubscriptionUpdate, SubscriptionResponse, DescriptionEnhanceRequest
 from auth import get_current_user
 from middleware.license_check import require_writable_license
 from database import db_dependency, get_db
@@ -69,17 +69,30 @@ async def _enrich_incident(db: aiosqlite.Connection, row: aiosqlite.Row) -> dict
     return incident
 
 
-@router.get("", response_model=list[IncidentResponse])
+@router.get("", response_model=list[IncidentListItem])
 async def list_incidents(
     status_filter: str = None,
     current_user: dict = Depends(get_current_user),
     db: aiosqlite.Connection = Depends(db_dependency),
 ):
-    """Alle Lagen des Tenants auflisten (oeffentliche + eigene private)."""
+    """Alle Lagen des Tenants auflisten (oeffentliche + eigene private).
+
+    Liefert schlanke Sidebar-Items — ohne summary, description, sources_json.
+    Volltexte kommen erst beim Oeffnen der Lage per GET /incidents/{id}.
+    """
     tenant_id = current_user.get("tenant_id")
     user_id = current_user["id"]
 
-    query = "SELECT * FROM incidents WHERE tenant_id = ? AND (visibility = 'public' OR created_by = ?)"
+    # Nur die fuer Sidebar + Edit-Dialog noetigen Spalten selektieren
+    # (spart bei Iran: 324 KB sources_json + 32 KB summary).
+    # has_summary als Bit — Frontend nutzt es zur Erkennung "erster Refresh".
+    query = (
+        "SELECT id, title, description, type, status, refresh_mode, refresh_interval, "
+        "refresh_start_time, retention_days, visibility, "
+        "international_sources, include_telegram, created_by, created_at, updated_at, "
+        "CASE WHEN summary IS NOT NULL AND summary != '' THEN 1 ELSE 0 END AS has_summary "
+        "FROM incidents WHERE tenant_id = ? AND (visibility = 'public' OR created_by = ?)"
+    )
     params = [tenant_id, user_id]
 
     if status_filter:
@@ -239,12 +252,41 @@ async def get_incident(
     current_user: dict = Depends(get_current_user),
     db: aiosqlite.Connection = Depends(db_dependency),
 ):
-    """Einzelne Lage abrufen."""
+    """Einzelne Lage abrufen.
+
+    sources_json wird NICHT mitgeliefert — fuer Zitate-Lookups
+    stattdessen GET /incidents/{id}/sources verwenden (lazy).
+    """
     tenant_id = current_user.get("tenant_id")
     row = await _check_incident_access(db, incident_id, current_user["id"], tenant_id)
     return await _enrich_incident(db, row)
 
 
+@router.get("/{incident_id}/sources")
+async def get_incident_sources(
+    incident_id: int,
+    current_user: dict = Depends(get_current_user),
+    db: aiosqlite.Connection = Depends(db_dependency),
+):
+    """Sources-Array einer Lage (geparst aus sources_json) fuer Zitate-Lookups."""
+    tenant_id = current_user.get("tenant_id")
+    await _check_incident_access(db, incident_id, current_user["id"], tenant_id)
+    cursor = await db.execute(
+        "SELECT sources_json FROM incidents WHERE id = ?",
+        (incident_id,),
+    )
+    row = await cursor.fetchone()
+    sources: list = []
+    if row and row["sources_json"]:
+        try:
+            parsed = json.loads(row["sources_json"])
+            if isinstance(parsed, list):
+                sources = parsed
+        except (json.JSONDecodeError, TypeError):
+            sources = []
+    return {"incident_id": incident_id, "sources": sources}
+
+
 @router.put("/{incident_id}", response_model=IncidentResponse)
 async def update_incident(
     incident_id: int,