Enable concurrent server actions

Author: ItsMeSamey

crash.txt

@@ -0,0 +1,32 @@
+~/projects/js/codex_manager ❯❯ zig build dev --
+vite v7.3.1 building client environment for production...
+✓ 8 modules transformed.
+dist/index.html       0.49 kB │ gzip:  0.33 kB
+dist/assets/app.css  14.24 kB │ gzip:  3.76 kB
+dist/assets/app.js   61.58 kB │ gzip: 19.05 kB
+✓ built in 453ms
+Codex Manager desktop URL: http://127.0.0.1:14555/index.html
+Segmentation fault at address 0x28
+???:?:?: 0x7fcd2a705a1e in ??? (libglib-2.0.so.0)
+Unwind information for `libglib-2.0.so.0:0x7fcd2a705a1e` was not available, trace may be incomplete
+
+???:?:?: 0x7fcd2acfc212 in ??? (libgtk-3.so.0)
+/home/a/.cache/zig/p/webui-2.5.0-beta.4-pxqD5Rb7NwBVEwKyEzxwKAprzUIYjN20Y_Wffl_SWVdg/src/webui.c:12173:17: 0x129553c in _webui_wv_set_position (/home/a/.cache/zig/p/webui-2.5.0-beta.4-pxqD5Rb7NwBVEwKyEzxwKAprzUIYjN20Y_Wffl_SWVdg/src/webui.c)
+                gtk_window_move(webView->gtk_win, webView->x, webView->y);
+                ^
+/home/a/.cache/zig/p/webui-2.5.0-beta.4-pxqD5Rb7NwBVEwKyEzxwKAprzUIYjN20Y_Wffl_SWVdg/src/webui.c:12669:25: 0x129497c in _webui_webview_thread (/home/a/.cache/zig/p/webui-2.5.0-beta.4-pxqD5Rb7NwBVEwKyEzxwKAprzUIYjN20Y_Wffl_SWVdg/src/webui.c)
+                        _webui_wv_set_position(win->webView, win->webView->x, win->webView->y);
+                        ^
+???:?:?: 0x7fcd2b3c9979 in ??? (libc.so.6)
+???:?:?: 0x7fcd2b44d2bb in ??? (libc.so.6)
+dev
+└─ run exe codex-manager failure
+error: the following command terminated unexpectedly:
+./.zig-cache/o/ac1f3594cb029bd37a71e0f582a44df6/codex-manager
+
+Build Summary: 7/9 steps succeeded; 1 failed
+dev transitive failure
+└─ run exe codex-manager failure
+
+error: the following build command failed with exit code 1:
+.zig-cache/o/8d1b01c57edb2b5cd0be174e9e1fd3ce/build /home/a/.local/bin/zig /home/a/.local/lib/zig /home/a/projects/js/codex_manager .zig-cache /home/a/.cache/zig --seed 0xe4725bbb -Z17307fc56fbdf828 dev --

frontend/src/App.css

@@ -175,10 +175,6 @@ body.drag-select-lock * {
 
 .topbar-main {
   min-width: 0;
-  cursor: grab;
-  -webkit-app-region: drag;
-  --webui-app-region: drag;
-  app-region: drag;
 }
 
 button,

src/main.zig

@@ -27,6 +27,7 @@ var window_is_fullscreen: bool = false;
 var window_state_lock = std.Thread.Mutex{};
 var oauth_listener_cancel = std.atomic.Value(bool).init(false);
 var active_bundle: assets.Bundle = .web;
+var show_custom_window_bar = false;
 var templates_initialized = false;
 var index_template: ?IndexTemplate = null;
 
@@ -72,22 +73,35 @@ pub fn main() !void {
 
     if (force_web_mode) {
         active_bundle = .web;
+        show_custom_window_bar = false;
         std.debug.print("Codex Manager web mode URL: {s}\n", .{loopback_url});
         webui.openUrl(loopback_url_z);
     } else {
         // Default mode is desktop; if WebView dependencies are unavailable, fall back to browser.
         active_bundle = .desktop;
-        window.setFrameless(true);
+        // Linux WebUI drag/minimize/maximize in frameless mode is unstable upstream.
+        // Keep native OS chrome there; use custom HTML chrome on other desktop OSes.
+        const use_custom_window_chrome = builtin.os.tag != .linux;
+        show_custom_window_bar = use_custom_window_chrome;
+        if (!use_custom_window_chrome) {
+            std.debug.print("Linux desktop: using native window chrome (frameless drag is unstable in current WebUI build)\n", .{});
+        }
+        if (use_custom_window_chrome) {
+            window.setFrameless(true);
+        }
         window.setCloseHandlerWv(cmWindowCloseHandler);
 
-        _ = try window.bind("cm_window_minimize", cmWindowMinimize);
-        _ = try window.bind("cm_window_toggle_fullscreen", cmWindowToggleFullscreen);
-        _ = try window.bind("cm_window_is_fullscreen", cmWindowIsFullscreen);
-        _ = try window.bind("cm_window_close", cmWindowClose);
+        if (use_custom_window_chrome) {
+            _ = try window.bind("cm_window_minimize", cmWindowMinimize);
+            _ = try window.bind("cm_window_toggle_fullscreen", cmWindowToggleFullscreen);
+            _ = try window.bind("cm_window_is_fullscreen", cmWindowIsFullscreen);
+            _ = try window.bind("cm_window_close", cmWindowClose);
+        }
 
         std.debug.print("Codex Manager desktop URL: {s}\n", .{loopback_url});
         window.showWv(loopback_url_z) catch |err| {
             active_bundle = .web;
+            show_custom_window_bar = false;
             std.debug.print(
                 "Desktop WebView unavailable ({s}); falling back to browser mode at {s}\n",
                 .{ @errorName(err), loopback_url },
@@ -238,7 +252,8 @@ fn makeDynamicIndexResponse(bundle: assets.Bundle) ?[]const u8 {
 
     const state_json = loadBootstrapStateJson(allocator) catch return null;
     defer allocator.free(state_json);
-    const show_window_bar = bundle == .desktop;
+    _ = bundle;
+    const show_window_bar = show_custom_window_bar;
 
     const injected_state_json = blk: {
         var parsed = std.json.parseFromSlice(std.json.Value, allocator, state_json, .{}) catch {