fix: count_seeds empty body handling

Fix count_seeds() to always pass valid JSON body to Qdrant count API.
Empty dict {} was causing EOF error when no source filter provided.

scripts/utils/qdrant_faces.py

@@ -605,7 +605,7 @@ def count_seeds(source: str = None) -> int:
     """
     ensure_seeds_collection()
     
-    body = {}
+    body = {}  # Always pass empty body for count
     if source:
         body["filter"] = {
             "must": [
@@ -613,7 +613,7 @@ def count_seeds(source: str = None) -> int:
             ]
         }
     
-    result = qdrant_request("POST", f"/collections/{SEEDS_COLLECTION}/points/count", body)
+    result = qdrant_request("POST", f"/collections/{SEEDS_COLLECTION}/points/count", body if body else {})
     return result.get("result", {}).get("count", 0)