feat: Swift Face Pose integration + TKG 方案 B

Major Changes:
- swift_face_pose: output pose angles (yaw/pitch/roll) in face.json
- face_processor.py: call swift_face_pose (dual output: face.json + pose.json)
- Face struct: add pose_angle field
- TKG 方案 B: gaze/lip_track nodes from face.json (no face_detections dependency)
- Chunk cleanup: delete old data before rebuild (avoid duplicate key)
- Hand nodes: classify by hand_type + gesture (15 combinations)
- HAND_OBJECT edges: bbox spatial matching (174 matches)

Test Results:
- Blake Jones: 8 faces, pose_angle ✓, 66 nodes, 174 edges
- FilmRiot: 394 faces, pose_angle ✓, 35 nodes, 39 edges
- Left hands: 132, Right hands: 2

Architecture:
- All TKG nodes built from JSON files (face.json, hand.json, yolo.json)
- Swift processors: sample_interval=3 (Face/Pose/Hand sync)
- Cleanup functions: delete_tkg_nodes_by_uuid, delete_tkg_edges_by_uuid

src/ui/progress/mod.rs

@@ -20,6 +20,7 @@ pub enum ProcessorType {
     Ocr,
     Face,
     Pose,
+    Hand,
     Story,
     Caption,
 }
@@ -35,6 +36,7 @@ impl ProcessorType {
             ProcessorType::Ocr => "OCR",
             ProcessorType::Face => "Face",
             ProcessorType::Pose => "Pose",
+            ProcessorType::Hand => "Hand",
             ProcessorType::Story => "Story",
             ProcessorType::Caption => "Caption",
         }
@@ -142,6 +144,7 @@ impl ProgressState {
                 ProcessorProgress::new(ProcessorType::Ocr),
                 ProcessorProgress::new(ProcessorType::Face),
                 ProcessorProgress::new(ProcessorType::Pose),
+                ProcessorProgress::new(ProcessorType::Hand),
                 ProcessorProgress::new(ProcessorType::Story),
                 ProcessorProgress::new(ProcessorType::Caption),
             ],