fix(qdrant): complete optimization gaps from v1

- qdrant/main.py: search/file now accepts hnsw_ef, exact, indexed_only form fields
  (was silently ignoring them, using server defaults only)
- qdrant/main.py: add GET /inspect endpoint — full diagnostic summary for all
  collections: HNSW, optimizer, quantization, segment count, payload index coverage,
  raw RAM estimate (vectors * dim * 4B * 1.5)
- gateway/main.py: vectors/search/file now forwards hnsw_ef, exact, indexed_only
- gateway/main.py: add GET /vectors/inspect proxy

gateway/main.py

@@ -243,13 +243,18 @@ async def vectors_search_file(
     limit: int = Form(5),
     score_threshold: Optional[float] = Form(None),
     collection: Optional[str] = Form(None),
+    hnsw_ef: Optional[int] = Form(None),
+    exact: bool = Form(False),
+    indexed_only: bool = Form(False),
 ):
     data = await file.read()
-    fields: Dict[str, Any] = {"limit": int(limit)}
+    fields: Dict[str, Any] = {"limit": int(limit), "exact": exact, "indexed_only": indexed_only}
     if score_threshold is not None:
         fields["score_threshold"] = float(score_threshold)
     if collection is not None:
         fields["collection"] = collection
+    if hnsw_ef is not None:
+        fields["hnsw_ef"] = int(hnsw_ef)
     async with httpx.AsyncClient(timeout=VISION_TIMEOUT) as client:
         return await _post_file(client, f"{QDRANT_SVC_URL}/search/file", data, fields)
 
@@ -284,6 +289,13 @@ async def vectors_collection_info(name: str):
         return await _get_json(client, f"{QDRANT_SVC_URL}/collections/{name}")
 
 
+@app.get("/vectors/inspect")
+async def vectors_inspect():
+    """Full diagnostic summary for all Qdrant collections (HNSW, optimizer, payload indexes, RAM estimate)."""
+    async with httpx.AsyncClient(timeout=VISION_TIMEOUT) as client:
+        return await _get_json(client, f"{QDRANT_SVC_URL}/inspect")
+
+
 @app.delete("/vectors/collections/{name}")
 async def vectors_delete_collection(name: str):
     async with httpx.AsyncClient(timeout=VISION_TIMEOUT) as client: