- ensure_collection was called without await, so the coroutine never ran and fresh tenants had no collection when the upsert hit Qdrant - a single None entry from embed_batch poisoned the point batch and aborted the whole document upsert; failed chunks are now skipped with a warning (all-failed raises and the IndexResult reports failure) - raw client.delete/client.upsert calls now go through the async wrapper (delete_by_filter and the new batch upsert_points method) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QbFZyDvYksazX6nYQYZ67L