feat(fimi): Backend-Endpoints fimi-matches + fimi-summary, Match-Count in sources-summary

- GET /{id}/fimi-matches: Treffer gruppiert nach Artikel inkl. Provenienz
  (Claim, Widerlegung, Case-URL, Zitat) fuer Andockpunkt 1.
- GET /{id}/fimi-summary: Aggregat (geprueft, Treffer, Narrative, Quellen)
  fuer die Lagebild-Qualitaetsachse (Andockpunkt 3).
- sources-summary um fimi_match_count erweitert (Andockpunkt 2).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/routers/incidents.py

@@ -495,11 +495,14 @@ async def get_articles_sources_summary(
     tenant_id = current_user.get("tenant_id")
     await _check_incident_access(db, incident_id, current_user["id"], tenant_id)
     cursor = await db.execute(
-        """SELECT source,
+        """SELECT a.source,
                   COUNT(*) AS article_count,
-                  GROUP_CONCAT(DISTINCT COALESCE(language,'de')) AS languages
+                  GROUP_CONCAT(DISTINCT COALESCE(a.language,'de')) AS languages,
-           FROM articles WHERE incident_id = ?
+                  COUNT(DISTINCT m.article_id) AS fimi_match_count
-           GROUP BY source ORDER BY article_count DESC""",
+           FROM articles a
+           LEFT JOIN article_fimi_matches m ON m.article_id = a.id
+           WHERE a.incident_id = ?
+           GROUP BY a.source ORDER BY article_count DESC""",
         (incident_id,),
     )
     sources = []
@@ -507,6 +510,7 @@ async def get_articles_sources_summary(
         d = dict(r)
         langs = (d.pop("languages") or "de").split(",")
         d["languages"] = sorted({(l or "de").strip() for l in langs if l is not None})
+        d["fimi_match_count"] = d.get("fimi_match_count") or 0
         # Quellentyp aus dem source-Praefix ableiten (fuer den Typ-Filter der Quellenuebersicht)
         src = d.get("source") or ""
         if src.startswith("X: "):
@@ -532,6 +536,114 @@ async def get_articles_sources_summary(
     return {"total": total, "sources": sources, "language_counts": lang_counts}
 
 
+@router.get("/{incident_id}/fimi-matches")
+async def get_fimi_matches(
+    incident_id: int,
+    current_user: dict = Depends(get_current_user),
+    db: aiosqlite.Connection = Depends(db_dependency),
+):
+    """FIMI-Treffer einer Lage, gruppiert nach Artikel (fuer Andockpunkt 1).
+
+    Pro Artikel die verlinkten EUvsDisinfo-Falschbehauptungen mit Provenienz:
+    Claim-Text, Widerlegung, Case-URL, Embedding-Score und das woertliche
+    Zitat aus dem Artikel. Der Monitor wertet nicht selbst, er verweist.
+    """
+    tenant_id = current_user.get("tenant_id")
+    await _check_incident_access(db, incident_id, current_user["id"], tenant_id)
+    cursor = await db.execute(
+        """SELECT m.article_id, m.fimi_claim_id, m.score, m.role, m.matched_text,
+                  c.text AS claim_text, c.verdict, c.verdict_summary,
+                  c.source_ref, c.case_url
+           FROM article_fimi_matches m
+           JOIN articles a ON a.id = m.article_id
+           JOIN fimi_claims c ON c.id = m.fimi_claim_id
+           WHERE a.incident_id = ?
+           ORDER BY m.score DESC""",
+        (incident_id,),
+    )
+    by_article: dict[str, list] = {}
+    for r in await cursor.fetchall():
+        d = dict(r)
+        aid = str(d["article_id"])
+        by_article.setdefault(aid, []).append({
+            "claim_id": d["fimi_claim_id"],
+            "claim_text": d["claim_text"],
+            "verdict": d["verdict"],
+            "verdict_summary": d["verdict_summary"],
+            "case_url": d["case_url"],
+            "source_ref": d["source_ref"],
+            "score": d["score"],
+            "passage": d["matched_text"],
+        })
+    return {"matches_by_article": by_article, "article_count": len(by_article)}
+
+
+@router.get("/{incident_id}/fimi-summary")
+async def get_fimi_summary(
+    incident_id: int,
+    current_user: dict = Depends(get_current_user),
+    db: aiosqlite.Connection = Depends(db_dependency),
+):
+    """Aggregierte FIMI-Kennzahlen fuer die Lagebild-Qualitaetsachse (Andockpunkt 3).
+
+    Antwortet auch sinnvoll, wenn noch nichts geprueft wurde."""
+    tenant_id = current_user.get("tenant_id")
+    await _check_incident_access(db, incident_id, current_user["id"], tenant_id)
+
+    cur = await db.execute(
+        """SELECT COUNT(*) AS total,
+                  SUM(CASE WHEN fimi_checked_at IS NOT NULL THEN 1 ELSE 0 END) AS checked
+           FROM articles WHERE incident_id = ?""",
+        (incident_id,),
+    )
+    row = await cur.fetchone()
+    total = row["total"] or 0
+    checked = row["checked"] or 0
+
+    cur = await db.execute(
+        """SELECT COUNT(DISTINCT m.article_id) AS matched_articles,
+                  COUNT(DISTINCT m.fimi_claim_id) AS distinct_claims
+           FROM article_fimi_matches m
+           JOIN articles a ON a.id = m.article_id
+           WHERE a.incident_id = ?""",
+        (incident_id,),
+    )
+    row = await cur.fetchone()
+    matched_articles = row["matched_articles"] or 0
+    distinct_claims = row["distinct_claims"] or 0
+
+    cur = await db.execute(
+        """SELECT c.id AS claim_id, c.text AS claim_text, c.case_url,
+                  COUNT(DISTINCT m.article_id) AS article_count
+           FROM article_fimi_matches m
+           JOIN articles a ON a.id = m.article_id
+           JOIN fimi_claims c ON c.id = m.fimi_claim_id
+           WHERE a.incident_id = ?
+           GROUP BY c.id ORDER BY article_count DESC LIMIT 10""",
+        (incident_id,),
+    )
+    top_claims = [dict(r) for r in await cur.fetchall()]
+
+    cur = await db.execute(
+        """SELECT a.source, COUNT(DISTINCT m.article_id) AS match_count
+           FROM article_fimi_matches m
+           JOIN articles a ON a.id = m.article_id
+           WHERE a.incident_id = ?
+           GROUP BY a.source ORDER BY match_count DESC LIMIT 10""",
+        (incident_id,),
+    )
+    by_source = [dict(r) for r in await cur.fetchall()]
+
+    return {
+        "articles_total": total,
+        "articles_checked": checked,
+        "articles_with_match": matched_articles,
+        "distinct_claims": distinct_claims,
+        "top_claims": top_claims,
+        "by_source": by_source,
+    }
+
+
 @router.get("/{incident_id}/articles/timeline-buckets")
 async def get_articles_timeline_buckets(
     incident_id: int,