release: v1.3.0 - TKG node type renaming

Changes:
- Rust: face_trace → face_track (45 occurrences in 8 files)
- Rust: gaze_trace → gaze_track, lip_trace → lip_track
- Python: tkg_builder.py unified + pipeline_checklist.py fixed
- Swift: swift_hand.swift hand state detection (empty vs holding)

Node type changes:
  face_trace    → face_track
  person_trace  → body_track
  gaze_trace    → gaze_track
  lip_trace     → lip_track
  hand_trace    → hand_track
  speaker       → speaker_segment
  object        → detected_object
  text_trace    → text_region

Migration:
  PUBLIC schema: 12970 + 892 + 305 rows updated

src/cli/agent.rs

@@ -7,8 +7,8 @@ pub async fn handle_agent(tool: &str, args_str: &str) -> Result<()> {
     let db = PostgresDb::init()
         .await
         .context("Failed to initialize database")?;
-    let args: serde_json::Value = serde_json::from_str(args_str)
-        .context("Failed to parse JSON arguments")?;
+    let args: serde_json::Value =
+        serde_json::from_str(args_str).context("Failed to parse JSON arguments")?;
 
     let pool = db.pool();
     let result = match tool {
@@ -35,12 +35,10 @@ pub async fn handle_agent(tool: &str, args_str: &str) -> Result<()> {
     };
 
     match result {
-        Ok(json_str) => {
-            match serde_json::from_str::<serde_json::Value>(&json_str) {
-                Ok(value) => println!("{}", serde_json::to_string_pretty(&value)?),
-                Err(_) => println!("{}", json_str),
-            }
-        }
+        Ok(json_str) => match serde_json::from_str::<serde_json::Value>(&json_str) {
+            Ok(value) => println!("{}", serde_json::to_string_pretty(&value)?),
+            Err(_) => println!("{}", json_str),
+        },
         Err(e) => {
             eprintln!("Error: {}", e);
             std::process::exit(1);