fix(tauri): restore desktop menu controls and fullscreen shortcut (#226)

## Summary
- restore the missing desktop View and Window menu controls
- use native reload and window actions where supported instead of
brittle webview-only behavior
- restore the working fullscreen keyboard shortcut while keeping the
zoom menu labels aligned with the intended desktop behavior

## Testing
- cargo check --manifest-path packages/tauri-app/src-tauri/Cargo.toml

packages/tauri-app/Cargo.lock

@@ -473,6 +473,7 @@ dependencies = [
  "tauri",
  "tauri-build",
  "tauri-plugin-dialog",
+ "tauri-plugin-global-shortcut",
  "tauri-plugin-notification",
  "tauri-plugin-opener",
  "thiserror 1.0.69",
@@ -1350,6 +1351,16 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "gethostname"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bd49230192a3797a9a4d6abe9b3eed6f7fa4c8a8a4947977c6f80025f92cbd8"
+dependencies = [
+ "rustix 1.1.4",
+ "windows-link 0.2.1",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.1.16"
@@ -1482,6 +1493,24 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
 
+[[package]]
+name = "global-hotkey"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9247516746aa8e53411a0db9b62b0e24efbcf6a76e0ba73e5a91b512ddabed7"
+dependencies = [
+ "crossbeam-channel",
+ "keyboard-types",
+ "objc2",
+ "objc2-app-kit",
+ "once_cell",
+ "serde",
+ "thiserror 2.0.18",
+ "windows-sys 0.59.0",
+ "x11rb",
+ "xkeysym",
+]
+
 [[package]]
 name = "gobject-sys"
 version = "0.18.0"
@@ -4055,6 +4084,21 @@ dependencies = [
  "url",
 ]
 
+[[package]]
+name = "tauri-plugin-global-shortcut"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "424af23c7e88d05e4a1a6fc2c7be077912f8c76bd7900fd50aa2b7cbf5a2c405"
+dependencies = [
+ "global-hotkey",
+ "log",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-plugin",
+ "thiserror 2.0.18",
+]
+
 [[package]]
 name = "tauri-plugin-notification"
 version = "2.3.3"
@@ -5735,6 +5779,29 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "x11rb"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9993aa5be5a26815fe2c3eacfc1fde061fc1a1f094bf1ad2a18bf9c495dd7414"
+dependencies = [
+ "gethostname",
+ "rustix 1.1.4",
+ "x11rb-protocol",
+]
+
+[[package]]
+name = "x11rb-protocol"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea6fc2961e4ef194dcbfe56bb845534d0dc8098940c7e5c012a258bfec6701bd"
+
+[[package]]
+name = "xkeysym"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9cc00251562a284751c9973bace760d86c0276c471b4be569fe6b068ee97a56"
+
 [[package]]
 name = "yoke"
 version = "0.8.1"