Fix: use pydantic pattern; handle httpx RequestError in gateway and qdrant

qdrant/main.py

@@ -109,20 +109,32 @@ def _col(name: Optional[str]) -> str:
 async def _embed_url(url: str) -> List[float]:
     """Call the CLIP service to get an image embedding."""
     async with httpx.AsyncClient(timeout=30) as http:
-        r = await http.post(f"{CLIP_URL}/embed", json={"url": url})
+        try:
+            r = await http.post(f"{CLIP_URL}/embed", json={"url": url})
+        except httpx.RequestError as e:
+            raise HTTPException(502, f"CLIP request failed: {str(e)}")
         if r.status_code >= 400:
             raise HTTPException(502, f"CLIP /embed error: {r.status_code} {r.text[:200]}")
-        return r.json()["vector"]
+        try:
+            return r.json()["vector"]
+        except Exception:
+            raise HTTPException(502, f"CLIP /embed returned non-JSON: {r.status_code} {r.text[:200]}")
 
 
 async def _embed_bytes(data: bytes) -> List[float]:
     """Call the CLIP service to embed uploaded file bytes."""
     async with httpx.AsyncClient(timeout=30) as http:
         files = {"file": ("image", data, "application/octet-stream")}
-        r = await http.post(f"{CLIP_URL}/embed/file", files=files)
+        try:
+            r = await http.post(f"{CLIP_URL}/embed/file", files=files)
+        except httpx.RequestError as e:
+            raise HTTPException(502, f"CLIP request failed: {str(e)}")
         if r.status_code >= 400:
             raise HTTPException(502, f"CLIP /embed/file error: {r.status_code} {r.text[:200]}")
-        return r.json()["vector"]
+        try:
+            return r.json()["vector"]
+        except Exception:
+            raise HTTPException(502, f"CLIP /embed/file returned non-JSON: {r.status_code} {r.text[:200]}")
 
 
 def _build_filter(metadata: Dict[str, Any]) -> Optional[Filter]: