portal: filter image-gen models from chat picker by name (gateway strips mode from /v1/models)

app/main.py

@@ -2017,9 +2017,14 @@ async def list_models(request: Request):
             mid = (m.get("id") or "").lower()
             return any(h in mid for h in embedding_name_hints)
 
+        image_name_hints = ("qwen-image",)
+
         def is_image_model(m) -> bool:
             mode = ((m.get("info") or {}).get("meta") or {}).get("mode") or ""
-            return mode in image_modes
+            if mode in image_modes:
+                return True
+            mid = (m.get("id") or "").lower()
+            return any(h in mid for h in image_name_hints)
 
         payload["data"] = [
             m for m in payload.get("data", [])