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>

internal/apphost/app.go

@@ -39,9 +39,11 @@ type App struct {
 	Pings         []netcheck.Result
 	OpenURL       func(string) error
 	OnAfterUpdate func()
+	OnQuit        func()
 	APIToken      string
 	ctx           context.Context
 	cancel        context.CancelFunc
+	events        *eventBroker
 }
 
 type UIState struct {
@@ -81,11 +83,12 @@ type PingBestResult struct {
 func New(mgr *core.Manager, cfgPath string, logBuf *logbuf.Buffer) *App {
 	ctx, cancel := context.WithCancel(context.Background())
 	return &App{
-		Mgr:     mgr,
+		Mgr:    mgr,
 		CfgPath: cfgPath,
-		LogBuf:  logBuf,
-		ctx:     ctx,
-		cancel:  cancel,
+		LogBuf: logBuf,
+		ctx:    ctx,
+		cancel: cancel,
+		events: newEventBroker(),
 		UpdateStatus: update.Status{
 			Current:     update.DisplayVersion(),
 			ManifestURL: update.DefaultManifestURL,
@@ -257,8 +260,13 @@ func (a *App) CreateProfile(name, proxy string, systemProxy bool) error {
 
 func (a *App) SelectProfile(name string) error {
 	a.mu.Lock()
-	defer a.mu.Unlock()
-	return a.Mgr.SetActiveProfile(name)
+	err := a.Mgr.SetActiveProfile(name)
+	a.mu.Unlock()
+	if err == nil {
+		go a.warmActiveCore()
+		a.NotifyState("profile")
+	}
+	return err
 }
 
 func (a *App) DeleteProfile(name string) error {
@@ -305,6 +313,7 @@ func (a *App) ConnectProfile(name string) error {
 	for attempt := 0; attempt < 2; attempt++ {
 		if _, err := a.Mgr.EnsureCore(""); err != nil {
 			a.Mgr.SetLastError(err.Error())
+			a.NotifyState("error")
 			return err
 		}
 		ctx, cancel := context.WithTimeout(context.Background(), 45*time.Second)
@@ -320,6 +329,7 @@ func (a *App) ConnectProfile(name string) error {
 		pcancel()
 		if perr == nil {
 			dockicon.SetConnected(true)
+			a.NotifyState("connected")
 			return nil
 		}
 		last = fmt.Errorf("туннель не прошёл проверку: %w", perr)
@@ -329,12 +339,14 @@ func (a *App) ConnectProfile(name string) error {
 		time.Sleep(400 * time.Millisecond)
 	}
 	dockicon.SetConnected(false)
+	a.NotifyState("error")
 	return last
 }
 
 func (a *App) Disconnect() error {
 	err := a.Mgr.Disconnect()
 	dockicon.SetConnected(false)
+	a.NotifyState("disconnected")
 	return err
 }
 
@@ -367,6 +379,7 @@ func (a *App) SavePrefs(connectOnLaunch, autoReconnect, systemProxy bool) error
 func (a *App) StartBackground() {
 	go a.watchdogLoop()
 	go a.dockIconLoop()
+	go a.warmActiveCore()
 	prefs := a.Mgr.Prefs()
 	if prefs.ConnectOnLaunch {
 		go func() {
@@ -383,6 +396,20 @@ func (a *App) StartBackground() {
 	}
 }
 
+// warmActiveCore downloads/resolves the binary for the active profile protocol.
+// Non-blocking; Connect still EnsureCore if this has not finished yet.
+func (a *App) warmActiveCore() {
+	select {
+	case <-a.ctx.Done():
+		return
+	case <-time.After(350 * time.Millisecond):
+	}
+	if _, err := a.Mgr.EnsureCore(""); err != nil {
+		// Soft fail — Connect will surface the error if the user tries.
+		return
+	}
+}
+
 func (a *App) dockIconLoop() {
 	dockicon.SetConnected(false)
 	var last bool
@@ -620,6 +647,7 @@ func (a *App) Handler() http.Handler {
 		}
 		_, _ = io.WriteString(w, html)
 	})
+	mux.HandleFunc("/api/events", a.handleEvents)
 	mux.HandleFunc("/api/", a.handleAPI)
 	return mux
 }
@@ -721,6 +749,11 @@ func (a *App) dispatch(name string, args []json.RawMessage) (any, error) {
 		go func() {
 			time.Sleep(200 * time.Millisecond)
 			_ = a.Mgr.Disconnect()
+			a.Shutdown()
+			if a.OnQuit != nil {
+				a.OnQuit()
+				return
+			}
 			os.Exit(0)
 		}()
 		return "ok", nil

internal/apphost/events.go

@@ -0,0 +1,117 @@
+package apphost
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"sync"
+	"time"
+)
+
+// eventBroker fans out lightweight UI notifications (SSE).
+type eventBroker struct {
+	mu   sync.Mutex
+	subs map[chan []byte]struct{}
+}
+
+func newEventBroker() *eventBroker {
+	return &eventBroker{subs: make(map[chan []byte]struct{})}
+}
+
+func (b *eventBroker) subscribe() chan []byte {
+	ch := make(chan []byte, 8)
+	b.mu.Lock()
+	b.subs[ch] = struct{}{}
+	b.mu.Unlock()
+	return ch
+}
+
+func (b *eventBroker) unsubscribe(ch chan []byte) {
+	b.mu.Lock()
+	if _, ok := b.subs[ch]; ok {
+		delete(b.subs, ch)
+		close(ch)
+	}
+	b.mu.Unlock()
+}
+
+func (b *eventBroker) publish(payload []byte) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	for ch := range b.subs {
+		select {
+		case ch <- payload:
+		default:
+			// Drop if a slow client is behind; safety-net poll will catch up.
+		}
+	}
+}
+
+// NotifyState pushes a small SSE payload so the UI can refresh immediately.
+func (a *App) NotifyState(kind string) {
+	if a == nil || a.events == nil {
+		return
+	}
+	if kind == "" {
+		kind = "state"
+	}
+	b, err := json.Marshal(map[string]string{"type": kind})
+	if err != nil {
+		return
+	}
+	a.events.publish(b)
+}
+
+func (a *App) handleEvents(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "GET only", http.StatusMethodNotAllowed)
+		return
+	}
+	if a.APIToken != "" {
+		tok := r.Header.Get("X-Navis-Token")
+		if tok == "" {
+			tok = r.URL.Query().Get("t")
+		}
+		if tok != a.APIToken {
+			http.Error(w, "unauthorized", http.StatusUnauthorized)
+			return
+		}
+	}
+	flusher, ok := w.(http.Flusher)
+	if !ok {
+		http.Error(w, "stream unsupported", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "text/event-stream")
+	w.Header().Set("Cache-Control", "no-cache")
+	w.Header().Set("Connection", "keep-alive")
+	w.WriteHeader(http.StatusOK)
+	flusher.Flush()
+
+	ch := a.events.subscribe()
+	defer a.events.unsubscribe(ch)
+
+	ping := time.NewTicker(20 * time.Second)
+	defer ping.Stop()
+	for {
+		select {
+		case <-r.Context().Done():
+			return
+		case <-a.ctx.Done():
+			return
+		case <-ping.C:
+			if _, err := fmt.Fprintf(w, ": ping\n\n"); err != nil {
+				return
+			}
+			flusher.Flush()
+		case msg, ok := <-ch:
+			if !ok {
+				return
+			}
+			if _, err := fmt.Fprintf(w, "data: %s\n\n", msg); err != nil {
+				return
+			}
+			flusher.Flush()
+		}
+	}
+}