fix: agent_search tool descriptions + HAND_OBJECT casing + rule2 edge types

- agent_search.rs: text_region -> text_trace, removed skin_tone_trace
  (never built, misleading LLM agents)
- tkg.rs + scan.rs: hand_object -> HAND_OBJECT for consistency with
  all other edge types (CO_OCCURS_WITH, SPEAKS_AS, etc.)
- rule2_ingest.rs: added LIP_SYNC and HAND_OBJECT to edge_type
  priority list so these edges generate relationship chunks

src/api/agent_search.rs

@@ -247,10 +247,10 @@ fn make_tools(pool: &sqlx::PgPool) -> Vec<ToolDef> {
         ),
         function_calling::make_tool(
             "tkg_nodes_query",
-            "查詢 TKG 知識圖譜的節點列表。可依照節點類型篩選（face_track, gaze_track, lip_track, text_region, appearance_trace, skin_tone_trace, object, speaker）。適合查詢影片中有多少人物軌跡、文字片段等。",
+            "查詢 TKG 知識圖譜的節點列表。可依照節點類型篩選（face_track, gaze_track, lip_track, text_trace, appearance_trace, object, speaker）。適合查詢影片中有多少人物軌跡、文字片段等。",
             serde_json::json!({
                 "file_uuid": {"type": "string", "description": "影片 UUID"},
-                "node_type": {"type": "string", "description": "節點類型（可選）: face_track, gaze_track, lip_track, text_region, appearance_trace, skin_tone_trace, object, speaker"},
+                "node_type": {"type": "string", "description": "節點類型（可選）: face_track, gaze_track, lip_track, text_trace, appearance_trace, object, speaker"},
                 "page": {"type": "integer", "default": 1},
                 "page_size": {"type": "integer", "default": 20}
             }),

src/api/scan.rs

@@ -566,7 +566,7 @@ async fn get_ingestion_status(
     let lip_sync_edges: i64 = count_sql!(&format!("SELECT COUNT(*) FROM {tkg_edges_table} WHERE file_uuid = '{file_uuid}' AND edge_type = 'LIP_SYNC'"));
     let has_appearance_edges: i64 = count_sql!(&format!("SELECT COUNT(*) FROM {tkg_edges_table} WHERE file_uuid = '{file_uuid}' AND edge_type = 'HAS_APPEARANCE'"));
     let wears_edges: i64 = count_sql!(&format!("SELECT COUNT(*) FROM {tkg_edges_table} WHERE file_uuid = '{file_uuid}' AND edge_type = 'WEARS'"));
-    let hand_object_edges: i64 = count_sql!(&format!("SELECT COUNT(*) FROM {tkg_edges_table} WHERE file_uuid = '{file_uuid}' AND edge_type = 'hand_object'"));
+    let hand_object_edges: i64 = count_sql!(&format!("SELECT COUNT(*) FROM {tkg_edges_table} WHERE file_uuid = '{file_uuid}' AND edge_type = 'HAND_OBJECT'"));
 
     // Rule 2 relationship chunks
     let rule2_chunks = count_sql!(&format!(
@@ -1026,7 +1026,7 @@ async fn get_file_stats(
         has_appearance_edges: count_edges(pool, &tkg_edges_table, &file_uuid, "HAS_APPEARANCE")
             .await,
         wears_edges: count_edges(pool, &tkg_edges_table, &file_uuid, "WEARS").await,
-        hand_object_edges: count_edges(pool, &tkg_edges_table, &file_uuid, "hand_object").await,
+        hand_object_edges: count_edges(pool, &tkg_edges_table, &file_uuid, "HAND_OBJECT").await,
         ..Default::default()
     };
 

src/core/chunk/rule2_ingest.rs

@@ -51,8 +51,10 @@ pub async fn ingest_rule2(
         "SPEAKS_AS",
         "MUTUAL_GAZE",
         "CO_OCCURS_WITH",
+        "LIP_SYNC",
         "HAS_APPEARANCE",
         "WEARS",
+        "HAND_OBJECT",
     ];
     let total_types = edge_types.len();
 

src/core/processor/tkg.rs

@@ -2930,7 +2930,7 @@ async fn build_hand_object_edges(
                                 "#,
                                 edges_table
                             ))
-                            .bind("hand_object")
+                            .bind("HAND_OBJECT")
                             .bind(hand_id)
                             .bind(obj_id)
                             .bind(file_uuid)