feat(agent): log answer comments

agent/api.py

@@ -124,6 +124,18 @@ class RatingResponse(StrictModel):
     accepted: Literal[True] = True
 
 
+class CommentRequest(StrictModel):
+    request_id: str = Field(pattern=r"^[A-Za-z0-9._:-]{1,128}$")
+    comment: str = Field(min_length=1, max_length=2000)
+
+
+class CommentResponse(StrictModel):
+    api_version: Literal["v1"] = API_VERSION
+    request_id: str
+    comment_id: int
+    accepted: Literal[True] = True
+
+
 class AppState:
     def __init__(self) -> None:
         self.cfg: Config | None = None
@@ -435,6 +447,34 @@ def rate_answer(req: RatingRequest, request: Request) -> RatingResponse:
     return RatingResponse(request_id=req.request_id, rating=req.rating)
 
 
+@app.post(
+    "/v1/comments",
+    response_model=CommentResponse,
+    dependencies=[Depends(require_api_access)],
+)
+def comment_answer(req: CommentRequest, request: Request) -> CommentResponse:
+    rag: AppState = request.app.state.rag
+    audit = rag.get_audit()
+    if audit is None:
+        raise HTTPException(status_code=503, detail="Kommentare sind nicht aktiviert.")
+    comment = req.comment.strip()
+    if not comment:
+        raise HTTPException(status_code=422, detail="Kommentar darf nicht leer sein.")
+    try:
+        comment_id = audit.record_comment(req.request_id, comment)
+    except KeyError as exc:
+        raise HTTPException(status_code=404, detail="Antwort nicht gefunden.") from exc
+    except Exception as exc:
+        logger.exception("Kommentar fehlgeschlagen request_id=%s", req.request_id)
+        raise HTTPException(
+            status_code=503, detail="Kommentar konnte nicht gespeichert werden."
+        ) from exc
+    return CommentResponse(
+        request_id=req.request_id,
+        comment_id=comment_id,
+    )
+
+
 def _reindex(request: Request) -> dict:
     rag: AppState = request.app.state.rag
     cfg = rag.ensure()