Release 3.8.2.6: perceived-speed UX — search, tray hide, core warm, SSE.

Server search/hotkeys; Windows close-to-tray; background EnsureCore; SSE status with rare poll fallback.

Co-authored-by: Cursor <cursoragent@cursor.com>

cmd/vpnapp/platform_windows.go

@@ -7,12 +7,38 @@ import (
 	"log"
 	"os"
 	"path/filepath"
+	"sync/atomic"
 	"unsafe"
 
 	"github.com/crgimenes/glaze"
 	"golang.org/x/sys/windows"
 )
 
+var (
+	user32              = windows.NewLazySystemDLL("user32.dll")
+	procGetWindowLongPtr = user32.NewProc("GetWindowLongPtrW")
+	procSetWindowLongPtr = user32.NewProc("SetWindowLongPtrW")
+	procCallWindowProc   = user32.NewProc("CallWindowProcW")
+	procShowWindow       = user32.NewProc("ShowWindow")
+	procSetForeground    = user32.NewProc("SetForegroundWindow")
+	procPostMessage      = user32.NewProc("PostMessageW")
+	procIsIconic         = user32.NewProc("IsIconic")
+
+	mainHWND       uintptr
+	origWndProc    uintptr
+	closeHookCB    uintptr
+	allowDestroy   atomic.Bool
+)
+
+const (
+	// GWLP_WNDPROC as unsigned pointer-sized -4.
+	gwlpWndProc = ^uintptr(3)
+	wmClose     = 0x0010
+	swHide      = 0
+	swShow      = 5
+	swRestore   = 9
+)
+
 func openExternal(raw string) error {
 	verb, err := windows.UTF16PtrFromString("open")
 	if err != nil {
@@ -40,7 +66,61 @@ func decorateWindow(w glaze.WebView) {
 	if w == nil {
 		return
 	}
-	applyWindowIcon(w.Window())
+	hwnd := w.Window()
+	applyWindowIcon(hwnd)
+	installCloseToHide(hwnd)
+}
+
+func installCloseToHide(hwnd unsafe.Pointer) {
+	if hwnd == nil {
+		return
+	}
+	mainHWND = uintptr(hwnd)
+	allowDestroy.Store(false)
+	if closeHookCB == 0 {
+		closeHookCB = windows.NewCallback(closeToHideWndProc)
+	}
+	orig, _, _ := procGetWindowLongPtr.Call(mainHWND, gwlpWndProc)
+	if orig == 0 {
+		return
+	}
+	origWndProc = orig
+	procSetWindowLongPtr.Call(mainHWND, gwlpWndProc, closeHookCB)
+}
+
+func closeToHideWndProc(hwnd uintptr, msg uint32, wParam, lParam uintptr) uintptr {
+	if msg == wmClose && !allowDestroy.Load() {
+		procShowWindow.Call(hwnd, uintptr(swHide))
+		return 0
+	}
+	r, _, _ := procCallWindowProc.Call(origWndProc, hwnd, uintptr(msg), wParam, lParam)
+	return r
+}
+
+func showMainWindow() {
+	if mainHWND == 0 {
+		return
+	}
+	iconic, _, _ := procIsIconic.Call(mainHWND)
+	if iconic != 0 {
+		procShowWindow.Call(mainHWND, uintptr(swRestore))
+	} else {
+		procShowWindow.Call(mainHWND, uintptr(swShow))
+	}
+	procSetForeground.Call(mainHWND)
+}
+
+func prepareWindowQuit() {
+	allowDestroy.Store(true)
+}
+
+func closeMainWindow() {
+	prepareWindowQuit()
+	if mainHWND == 0 {
+		os.Exit(0)
+		return
+	}
+	procPostMessage.Call(mainHWND, uintptr(wmClose), 0, 0)
 }
 
 func applyWindowIcon(hwnd unsafe.Pointer) {
@@ -52,7 +132,6 @@ func applyWindowIcon(hwnd unsafe.Pointer) {
 	if err != nil {
 		return
 	}
-	user32 := windows.NewLazySystemDLL("user32.dll")
 	loadImage := user32.NewProc("LoadImageW")
 	sendMessage := user32.NewProc("SendMessageW")
 	const (