Initial commit: X-Plane G1000 web cockpit + bridge + Tauri desktop app

- server/: Node bridge (datarefs/commands, navdata, CIFP procedures, flight plan)
- web/: React cockpit (PFD/MFD/Map, VFR six-pack, AFCS, FMS CDU), PWA, collapsible sidebar
- desktop/: Tauri 2 launcher (Bun sidecar, system tray, updater) + Linux build via Docker
- scripts/: prep-desktop, build-linux, Gitea release + latest.json

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

web/public/manifest.webmanifest

@@ -0,0 +1,16 @@
+{
+  "name": "G1000 Glass Cockpit",
+  "short_name": "G1000",
+  "description": "X-Plane 12 G1000 glass cockpit — PFD / MFD / FMS over your LAN",
+  "start_url": "/",
+  "scope": "/",
+  "display": "standalone",
+  "orientation": "landscape",
+  "background_color": "#000000",
+  "theme_color": "#000000",
+  "icons": [
+    { "src": "/icons/icon-192.png", "sizes": "192x192", "type": "image/png" },
+    { "src": "/icons/icon-512.png", "sizes": "512x512", "type": "image/png" },
+    { "src": "/icons/icon-512-maskable.png", "sizes": "512x512", "type": "image/png", "purpose": "maskable" }
+  ]
+}