fix: improve image extension handling and error reporting in upload functions

functions/control/main.py

@@ -124,11 +124,16 @@ def main(args):
                 if not image_b64:
                     continue
                 image_bytes = base64.b64decode(image_b64)
-                file_name = f"tv-rotator-{ts}-{idx}.{ext}"
-                MINIO_CLIENT.put_object(
-                    BUCKET, file_name, io.BytesIO(image_bytes), len(image_bytes),
-                    content_type=f"image/{ext}",
-                )
+                # Normalise ext: strip any URI junk, fall back to jpg
+                safe_ext = ext if ext and len(ext) <= 5 and ext.isalnum() else "jpg"
+                file_name = f"tv-rotator-{ts}-{idx}.{safe_ext}"
+                try:
+                    MINIO_CLIENT.put_object(
+                        BUCKET, file_name, io.BytesIO(image_bytes), len(image_bytes),
+                        content_type=f"image/{safe_ext}",
+                    )
+                except Exception as e:
+                    return {"status": "error", "message": f"MinIO upload failed: {e}"}
                 public_url = f"https://content2.reversed.dev/{BUCKET}/{file_name}"
                 urls.append(public_url)
             return {"status": "success", "urls": urls}