fix: wait for Qdrant face points before TKG build

- Add Qdrant count verification before TKG build
- Wait up to 30 seconds for Qdrant to have all face embeddings
- Prevents race condition where TKG reads incomplete data
- Add count_points method to QdrantDb

src/core/db/qdrant_db.rs

@@ -884,6 +884,41 @@ impl QdrantDb {
         Ok(all_points)
     }
 
+    pub async fn count_points(
+        &self,
+        collection: &str,
+        filter: serde_json::Value,
+    ) -> Result<i64> {
+        let url = format!(
+            "{}/collections/{}/points/count",
+            self.base_url, collection
+        );
+
+        let body = serde_json::json!({
+            "filter": filter,
+            "exact": true
+        });
+
+        let resp = self
+            .client
+            .post(&url)
+            .header("api-key", &self.api_key)
+            .header("Content-Type", "application/json")
+            .json(&body)
+            .send()
+            .await?;
+
+        if !resp.status().is_success() {
+            anyhow::bail!("Qdrant count failed: {}", resp.status());
+        }
+
+        let result: serde_json::Value = resp.json().await?;
+        let count = result["result"]["count"]
+            .as_i64()
+            .unwrap_or(0);
+        Ok(count)
+    }
+
     /// Update payload for points matching a filter
     pub async fn update_payload_by_filter(
         &self,

src/worker/job_worker.rs

@@ -2140,10 +2140,43 @@ impl JobWorker {
                                 traced_path, uuid
                             );
                         } else {
-                            info!(
-                                "📝 Prerequisites met for TKG Build (face_traced.json exists): {}",
-                                uuid
-                            );
+                            // Verify Qdrant has face points before TKG build
+                            let expected_faces = if let Ok(content) = std::fs::read_to_string(&face_json_path) {
+                                if let Ok(face_data) = serde_json::from_str::<serde_json::Value>(&content) {
+                                    face_data.get("total_faces").and_then(|t| t.as_i64()).unwrap_or(0)
+                                } else { 0 }
+                            } else { 0 };
+                            
+                            // Wait for Qdrant to have all face points (up to 30 seconds)
+                            let qdrant = crate::core::db::qdrant_db::QdrantDb::new();
+                            let mut attempts = 0;
+                            let max_attempts = 30;
+                            loop {
+                                match qdrant.count_points("_faces", serde_json::json!({
+                                    "must": [{"key": "file_uuid", "match": {"value": uuid}}]
+                                })).await {
+                                    Ok(count) if count >= expected_faces && expected_faces > 0 => {
+                                        info!("📝 Prerequisites met for TKG Build (Qdrant has {} faces, expected {}): {}", 
+                                            count, expected_faces, uuid);
+                                        break;
+                                    }
+                                    Ok(count) => {
+                                        attempts += 1;
+                                        if attempts >= max_attempts {
+                                            warn!("⚠️ TKG build proceeding with {} faces (expected {}) after 30s wait: {}", 
+                                                count, expected_faces, uuid);
+                                            break;
+                                        }
+                                        debug!("⏳ TKG waiting for Qdrant ({} of {} faces): {}", count, expected_faces, uuid);
+                                    }
+                                    Err(e) => {
+                                        warn!("Qdrant count failed: {}, proceeding anyway", e);
+                                        break;
+                                    }
+                                }
+                                tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+                            }
+                            
                             let db_clone = self.db.clone();
                             let redis_clone = self.redis.clone();
                             let uuid_clone = uuid.to_string();