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

scripts/swift_processors/Package.swift

@@ -118,5 +118,13 @@ let package = Package(
             path: ".",
             sources: ["swift_hand.swift"]
         ),
+        .executableTarget(
+            name: "swift_face_pose",
+            dependencies: [
+                .product(name: "ArgumentParser", package: "swift-argument-parser"),
+            ],
+            path: ".",
+            sources: ["swift_face_pose.swift"]
+        ),
     ]
 )

scripts/swift_processors/swift_face.swift

@@ -13,8 +13,8 @@ struct SwiftFace: ParsableCommand {
     @Argument(help: "Output JSON path")
     var outputPath: String
 
-    @Option(name: .long, help: "Sample interval (frames, default=30)")
-    var sampleInterval: Int = 30
+    @Option(name: .long, help: "Sample interval (frames, default=3)")
+    var sampleInterval: Int = 3
 
     @Option(name: .long, help: "UUID for logging")
     var uuid: String = ""

scripts/swift_processors/swift_face_pose.swift

@@ -318,8 +318,18 @@ struct SwiftFacePose: ParsableCommand {
             "fps": Double(fps),
             "frames": faceFrames,
         ]
-        if let faceJson = try? JSONSerialization.data(withJSONObject: faceOutputDict, options: []) {
+        do {
+            let faceJson = try JSONSerialization.data(withJSONObject: faceOutputDict, options: [])
             try faceJson.write(to: URL(fileURLWithPath: faceOutput))
+            print("[SwiftFacePose] Face output written: \(faceOutput)")
+            // Verify file exists
+            if FileManager.default.fileExists(atPath: faceOutput) {
+                print("[SwiftFacePose] Verified: file exists at \(faceOutput)")
+            } else {
+                print("[SwiftFacePose] ERROR: file not found after write!")
+            }
+        } catch {
+            print("[SwiftFacePose] ERROR writing face output: \(error)")
         }
 
         let poseOutputDict: [String: Any] = [

scripts/swift_processors/swift_hand.swift

@@ -18,7 +18,7 @@ struct SwiftHandProcessor: ParsableCommand {
     var uuid: String = ""
 
     @Option(name: [.short, .long], help: "Sample interval (frames)")
-    var sampleInterval: Int = 30
+    var sampleInterval: Int = 3
 
     @Option(name: [.long], help: "Minimum confidence threshold")
     var minConfidence: Double = 0.3

scripts/swift_processors/swift_pose.swift

@@ -26,8 +26,8 @@ struct SwiftPose: ParsableCommand {
     @Argument(help: "Output JSON path")
     var outputPath: String
 
-    @Option(name: .long, help: "Sample interval (frames, default=30)")
-    var sampleInterval: Int = 30
+    @Option(name: .long, help: "Sample interval (frames, default=3)")
+    var sampleInterval: Int = 3
 
     @Option(name: .long, help: "UUID for logging")
     var uuid: String = ""