[Update] Add Window Title bar.

[bugfix] Note: I think this is tauri's bug. When I try to resize the window and hovered dragable area, I could see resize cursor but it work as a dragging the window behavior that should't be.
Updated npm packages but still not work so I  managed it as adding margin-top by referring Discord title bar.

src-tauri/Cargo.lock

@@ -11,6 +11,7 @@ dependencies = [
  "serde_json",
  "tauri",
  "tauri-build",
+ "window-shadows",
 ]
 
 [[package]]
@@ -329,6 +330,22 @@ dependencies = [
  "objc",
 ]
 
+[[package]]
+name = "cocoa"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6140449f97a6e97f9511815c5632d84c8aacf8ac271ad77c559218161a1373c"
+dependencies = [
+ "bitflags 1.3.2",
+ "block",
+ "cocoa-foundation",
+ "core-foundation",
+ "core-graphics 0.23.2",
+ "foreign-types 0.5.0",
+ "libc",
+ "objc",
+]
+
 [[package]]
 name = "cocoa-foundation"
 version = "0.1.2"
@@ -2749,7 +2766,7 @@ dependencies = [
  "bitflags 1.3.2",
  "cairo-rs",
  "cc",
- "cocoa",
+ "cocoa 0.24.1",
  "core-foundation",
  "core-graphics 0.22.3",
  "crossbeam-channel",
@@ -2822,7 +2839,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77567d2b3b74de4588d544147142d02297f3eaa171a25a065252141d8597a516"
 dependencies = [
  "anyhow",
- "cocoa",
+ "cocoa 0.24.1",
  "dirs-next",
  "dunce",
  "embed_plist",
@@ -2952,7 +2969,7 @@ version = "0.14.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1989b3b4d611f5428b3414a4abae6fa6df30c7eb8ed33250ca90a5f7e5bb3655"
 dependencies = [
- "cocoa",
+ "cocoa 0.24.1",
  "gtk",
  "percent-encoding",
  "rand 0.8.5",
@@ -3548,6 +3565,17 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "window-shadows"
+version = "0.2.2"
+source = "git+https://github.com/tauri-apps/window-shadows.git#48fa81bbd9553b1b69e61590b4669bfad8b13ec8"
+dependencies = [
+ "cocoa 0.25.0",
+ "objc",
+ "raw-window-handle",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "windows"
 version = "0.39.0"
@@ -3883,7 +3911,7 @@ checksum = "00711278ed357350d44c749c286786ecac644e044e4da410d466212152383b45"
 dependencies = [
  "base64 0.13.1",
  "block",
- "cocoa",
+ "cocoa 0.24.1",
  "core-graphics 0.22.3",
  "crossbeam-channel",
  "dunce",

src-tauri/Cargo.toml

@@ -11,10 +11,11 @@ edition = "2021"
 tauri-build = { version = "1", features = [] }
 
 [dependencies]
-tauri = { version = "1", features = [ "window-set-decorations", "window-set-always-on-top", "shell-sidecar", "shell-open", "devtools"] }
+tauri = { version = "1", features = [ "window-unmaximize", "window-close", "window-maximize", "window-minimize", "window-unminimize", "window-start-dragging", "window-set-decorations", "window-set-always-on-top", "shell-sidecar", "shell-open", "devtools"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 font-kit = "0.14.2"
+window-shadows = { git = "https://github.com/tauri-apps/window-shadows.git" }
 
 [features]
 # This feature is used for production builds or when a dev server is not specified, DO NOT REMOVE!!

src-tauri/src/main.rs

@@ -3,19 +3,26 @@
 
 // use tauri::command;
 use tauri::Manager;
+use window_shadows::set_shadow;
 fn main() {
     tauri::Builder::default()
         .setup(|app| {
+            let main_window = app.get_window("main").unwrap();  // `main_window` is declared here for all builds
+
             #[cfg(debug_assertions)]
-            app.get_window("main").unwrap().open_devtools(); // `main` is the first window from tauri.conf.json without an explicit label
+            { main_window.open_devtools(); }
+
+            #[cfg(any(windows, target_os = "macos"))]
+            set_shadow(main_window, true).unwrap();
+
             Ok(())
         })
         .invoke_handler(tauri::generate_handler![get_font_list])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
-
 }
 
+
 use font_kit::{source::SystemSource};
 use std::collections::HashSet;
 

src-tauri/tauri.conf.json

@@ -13,8 +13,15 @@
     "allowlist": {
       "all": false,
       "window": {
+        "all": false,
         "setAlwaysOnTop": true,
-        "setDecorations": true
+        "setDecorations": true,
+        "close": true,
+        "maximize": true,
+        "minimize": true,
+        "unmaximize": true,
+        "unminimize": true,
+        "startDragging": true
     },
     "shell": {
         "all": false,