Add screen recording, crop, and a Cap-style result window

Recording: Ctrl+Shift+Cmd+R (or the menu) opens the same selection
flow — a marquee records that region, clicking a window records it
(following moves). Video is H.264 .mov at 60fps via SCStream ->
AVAssetWriter with the cursor included, auto-saved to ~/Movies and
revealed in Finder on stop. A red border and a floating timer/stop bar
show during recording, both excluded from the video. Audio is wired
behind a flag for later.

The result window gains a Crop button (crop to the selection;
annotations translate and stay editable) and is restyled after Cap:
sliding-pill Screenshot/Text switcher, capsule buttons in Cap blue,
circular icon buttons, and the content on a rounded card — light and
dark.

Generated with OpenCode

Assisted-by: Kimi:k3

Sources/Kapture/App.swift

@@ -34,19 +34,41 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
         }
         HotkeyManager.shared.onTrigger = { CaptureController.shared.begin() }
         HotkeyManager.shared.onFrozenTrigger = { CaptureController.shared.begin(frozen: true) }
+        HotkeyManager.shared.onRecordTrigger = {
+            if RecordingController.shared.state.isRecording {
+                RecordingController.shared.stop()
+            } else {
+                CaptureController.shared.begin(recording: true)
+            }
+        }
         HotkeyManager.shared.register()
     }
+
+    func applicationWillTerminate(_ notification: Notification) {
+        RecordingController.shared.finalizeForTermination()
+    }
 }
 
 struct MenuView: View {
     @State private var granted = PermissionManager.isGranted
+    @ObservedObject private var recordingState = RecordingController.shared.state
 
     var body: some View {
         Button("Capture & OCR") { CaptureController.shared.begin() }
             .keyboardShortcut("s", modifiers: [.command, .shift])
+            .disabled(recordingState.isRecording)
 
         Button("Capture Frozen Screen") { CaptureController.shared.begin(frozen: true) }
             .keyboardShortcut("s", modifiers: [.command, .shift, .control])
+            .disabled(recordingState.isRecording)
+
+        if recordingState.isRecording {
+            Button("Stop Recording") { RecordingController.shared.stop() }
+                .keyboardShortcut("r", modifiers: [.command, .shift, .control])
+        } else {
+            Button("Record Screen…") { CaptureController.shared.begin(recording: true) }
+                .keyboardShortcut("r", modifiers: [.command, .shift, .control])
+        }
 
         Button("Extract from Image File…") { ResultWindow.shared.showOpenPanel() }