feat(titlebar): add custom frameless titlebar with cross-platform window controls

Author: mohithxkarthikeya

desktop/src-tauri/Cargo.lock

@@ -44,3 +44,4 @@ reqwest = { version = "0.12", default-features = false, features = ["json", "rus
 notify = "6"
 notify-debouncer-mini = "0.4"
 arboard = "3.6.1"
+tauri-plugin-os = "2"

desktop/src-tauri/Cargo.toml

@@ -7,6 +7,11 @@
   ],
   "permissions": [
     "core:default",
-    "dialog:allow-open"
+    "dialog:allow-open",
+    "core:window:allow-minimize",
+    "core:window:allow-toggle-maximize",
+    "core:window:allow-close",
+    "core:window:allow-start-dragging",
+    "os:allow-platform"
   ]
 }

desktop/src-tauri/capabilities/default.json

@@ -23,6 +23,7 @@ use tauri::{Emitter, Manager};
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     tauri::Builder::default()
+        .plugin(tauri_plugin_os::init())
         .plugin(tauri_plugin_dialog::init())
         .manage(state::AppState {
             sessions:          Arc::new(Mutex::new(HashMap::new())),

desktop/src-tauri/src/lib.rs

@@ -20,7 +20,7 @@
         "minHeight": 500,
         "resizable": true,
         "fullscreen": false,
-        "decorations": true,
+        "decorations": false,
         "transparent": false,
         "focus": true,
         "visible": true