PFD/cockpit polish + KAP140 autopilot + UI refinements

- PFD: full-screen 2D attitude, G1000 yellow+magenta chevron symbology, rAF
  60fps horizon smoothing, translucent tapes, slimmer softkey bar, header fixes
- Collapsible macOS-dark sidebar (Inter), VFR six-pack + engine cluster + tach
- KAP140 autopilot on the analog page; GMC-710 AFCS tab
- FMS rebuilt as an X-Plane-style CDU; PWA; settings panel (knob mode)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

desktop/src-tauri/Cargo.lock

@@ -5900,7 +5900,7 @@ dependencies = [
 
 [[package]]
 name = "xplane-cockpit"
-version = "0.1.3"
+version = "0.1.4"
 dependencies = [
  "local-ip-address",
  "serde",