fix: make desktop updates transactional and restart the shell

CHANGELOG.md

@@ -6,6 +6,14 @@
 
 ## [Unreleased]
 
+## [0.0.9] - 2026-10-02
+
+### Fixed
+
+- After an in-app desktop download completes, restart the native FreeOS shell instead of restarting only the Python service, so the staged portable runtime is actually applied before the new version starts.
+- Wait for the previous Windows shell process to exit before the replacement instance claims the single-instance lock, preventing the relaunch from being mistaken for a duplicate process.
+- Keep the staged portable archive and metadata until extraction, validation, and runtime replacement all succeed, so a failed swap rolls back to the working runtime and retries on the next launch instead of silently losing the update.
+
 ## [0.0.8] - 2026-09-30
 
 ### Fixed

dashboard/src/pages/Settings/AdvancedSettings/UpdateConfig.tsx

@@ -22,6 +22,7 @@ import {
   clearStoredUpdateStatus,
   storeUpdateStatus,
 } from "../../../utils/updateStatusCache";
+import { restartDesktopForUpdate } from "../../../utils/desktopChrome";
 import { TabPanelHeader } from "./TabPanelHeader";
 import styles from "./UpdateConfig.module.less";
 
@@ -145,6 +146,7 @@ export default function UpdateConfig() {
     if (progress?.status !== "complete" || !status?.desktop) return;
     if (restartPhase !== "idle" || autoRestartedRef.current) return;
     autoRestartedRef.current = true;
+    if (restartDesktopForUpdate()) return;
     void executeRestart();
   }, [progress?.status, status?.desktop, restartPhase, executeRestart]);
 

dashboard/src/utils/desktopChrome.test.ts

@@ -6,6 +6,7 @@ import {
   CHROME_END_PAD_ATTR,
   chromeEndPadValue,
   emitDesktopWindowAction,
+  restartDesktopForUpdate,
   installDesktopWindowDrag,
   isDesktopShell,
   resolveDesktopChromeStyle,
@@ -130,6 +131,17 @@ describe("desktopChrome", () => {
     expect(invoke).toHaveBeenCalledWith("wails:event:emit:desktop:minimise");
   });
 
+  it("asks the native shell to relaunch for a staged update", () => {
+    const invoke = vi.fn();
+    expect(restartDesktopForUpdate({ _wails: { invoke } } as Window)).toBe(
+      true,
+    );
+    expect(invoke).toHaveBeenCalledWith(
+      "wails:event:emit:desktop:restart-for-update",
+    );
+    expect(restartDesktopForUpdate({} as Window)).toBe(false);
+  });
+
   it("arms drag on --wails-draggable regions and the top chrome strip", () => {
     const region = document.createElement("div");
     region.style.setProperty("--wails-draggable", "drag");

dashboard/src/utils/desktopChrome.ts

@@ -5,6 +5,9 @@ type DesktopWindow = Window & {
 export type DesktopChromeStyle = "mac" | "windows";
 export type DesktopWindowAction = "minimise" | "toggle-maximise" | "close";
 
+const DESKTOP_UPDATE_RESTART_EVENT =
+  "wails:event:emit:desktop:restart-for-update";
+
 export const WINDOW_CONTROLS_INSET: Record<DesktopChromeStyle, number> = {
   // 3×12px lights + 2×8px gaps + 8px/12px padding, plus a little slack.
   mac: 80,
@@ -88,6 +91,16 @@ export function emitDesktopWindowAction(
   return true;
 }
 
+/** Ask the native shell to fully relaunch so it can apply a staged runtime update. */
+export function restartDesktopForUpdate(
+  win: Pick<DesktopWindow, "_wails"> = window as DesktopWindow,
+): boolean {
+  const invoke = win._wails?.invoke;
+  if (typeof invoke !== "function") return false;
+  invoke(DESKTOP_UPDATE_RESTART_EVENT);
+  return true;
+}
+
 function dragEventElement(target: EventTarget | null): Element | null {
   if (target instanceof Element) return target;
   if (target instanceof Node) return target.parentElement;

desktop/src/download.go

@@ -40,6 +40,7 @@ func pythonExe(root string) string {
 
 func ensurePortable(locale Locale, status func(string)) error {
 	root := portableDir()
+	pendingUpdate := pendingPortableZip() != ""
 	if launchReady(root) {
 		if !shouldReplacePortable(root) {
 			status(desktopText(locale, copyStatusUsingRuntime))
@@ -75,6 +76,9 @@ func ensurePortable(locale Locale, status func(string)) error {
 	if !launchReady(root) {
 		return fmt.Errorf("portable extract missing launch.py or python under %s", root)
 	}
+	if pendingUpdate {
+		clearPendingPortable()
+	}
 	recordAppliedInstallStamp(root)
 	return nil
 }
@@ -630,7 +634,6 @@ func extractPortable(root string) error {
 		if err := unzipGreen(pending, root); err != nil {
 			return err
 		}
-		clearPendingPortable()
 		return nil
 	}
 	if os.Getenv("OCTOP_DESKTOP_PORTABLE_ZIP") != "" {

desktop/src/download_test.go

@@ -251,6 +251,52 @@ func TestEnsurePortableAppliesPendingFreeOSZip(t *testing.T) {
 	}
 }
 
+func TestEnsurePortableKeepsPendingZipWhenSwapFails(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("OCTOP_HOME", home)
+	root := portableDir()
+
+	oldZip := filepath.Join(t.TempDir(), "old.zip")
+	writeTestGreenZip(t, oldZip, "0.0.1")
+	if err := unzipGreen(oldZip, root); err != nil {
+		t.Fatal(err)
+	}
+
+	pendingDir := filepath.Join(home, "updates")
+	if err := os.MkdirAll(pendingDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	pending := filepath.Join(pendingDir, "pending-portable.zip")
+	writeTestGreenZipWithStamp(t, pending, "0.0.2", "github-pending")
+	if err := os.WriteFile(filepath.Join(pendingDir, "pending.json"), []byte(`{"version":"0.0.2"}`), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	prevRename := renamePortableImpl
+	prevStop := stopPortableHoldersFn
+	stopPortableHoldersFn = func(string) {}
+	renamePortableImpl = func(source, target string) error {
+		if strings.HasSuffix(source, ".new") && target == root {
+			return errors.New("forced swap failure")
+		}
+		return os.Rename(source, target)
+	}
+	t.Cleanup(func() {
+		renamePortableImpl = prevRename
+		stopPortableHoldersFn = prevStop
+	})
+
+	if err := ensurePortable(LocaleZH, func(string) {}); err != nil {
+		t.Fatalf("existing runtime should remain available: %v", err)
+	}
+	if _, err := os.Stat(pending); err != nil {
+		t.Fatalf("pending zip must remain available for retry: %v", err)
+	}
+	if got := portableVersion(root); got != "0.0.1" {
+		t.Fatalf("portable version = %q, want preserved 0.0.1", got)
+	}
+}
+
 func TestEnsurePortableRejectsMislabeledPendingZip(t *testing.T) {
 	home := t.TempDir()
 	t.Setenv("OCTOP_HOME", home)

desktop/src/main.go

@@ -8,6 +8,7 @@ import (
 	"log"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"runtime"
 	"strconv"
 	"strings"
@@ -389,13 +390,56 @@ func (a *App) requestQuit() {
 	}
 }
 
+const restartAfterPIDPrefix = "--freeos-restart-after-pid="
+
+func restartParentPID(args []string) int {
+	for _, arg := range args {
+		if !strings.HasPrefix(arg, restartAfterPIDPrefix) {
+			continue
+		}
+		pid, err := strconv.Atoi(strings.TrimPrefix(arg, restartAfterPIDPrefix))
+		if err == nil && pid > 0 {
+			return pid
+		}
+	}
+	return 0
+}
+
+func waitForRestartParent(args []string) {
+	pid := restartParentPID(args)
+	if pid <= 0 {
+		return
+	}
+	deadline := time.Now().Add(20 * time.Second)
+	for pidAlive(pid) && time.Now().Before(deadline) {
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+func (a *App) restartForUpdate() {
+	exe, err := os.Executable()
+	if err != nil {
+		log.Printf("restart for update: resolve executable: %v", err)
+		return
+	}
+	cmd := exec.Command(exe, fmt.Sprintf("%s%d", restartAfterPIDPrefix, os.Getpid()))
+	cmd.Dir = filepath.Dir(exe)
+	if err := cmd.Start(); err != nil {
+		log.Printf("restart for update: launch replacement: %v", err)
+		return
+	}
+	log.Printf("restart for update: replacement pid=%d", cmd.Process.Pid)
+	a.requestQuit()
+}
+
 func main() {
 	defer func() {
 		if rec := recover(); rec != nil {
 			log.Printf("panic: %v", rec)
 			showFatalError("FreeOS", desktopText(LocaleEN, copyNavigateFailed))
 		}
 	}()
+	waitForRestartParent(os.Args[1:])
 	pinWorkingDirectory()
 	if err := ensureProductHomeWritable(); err != nil {
 		showFatalError("FreeOS", err.Error())
@@ -488,6 +532,9 @@ func main() {
 		log.Printf("desktop:close event")
 		api.hideToTray()
 	})
+	app.Event.On("desktop:restart-for-update", func(_ *application.CustomEvent) {
+		go api.restartForUpdate()
+	})
 	app.Event.On("desktop:select-folder", func(_ *application.CustomEvent) {
 		go api.emitPickedFolder()
 	})

desktop/src/update_restart_test.go

@@ -0,0 +1,23 @@
+package main
+
+import "testing"
+
+func TestRestartParentPID(t *testing.T) {
+	tests := []struct {
+		name string
+		args []string
+		want int
+	}{
+		{name: "missing", args: []string{"--other"}, want: 0},
+		{name: "valid", args: []string{"--other", restartAfterPIDPrefix + "4321"}, want: 4321},
+		{name: "invalid", args: []string{restartAfterPIDPrefix + "bad"}, want: 0},
+		{name: "zero", args: []string{restartAfterPIDPrefix + "0"}, want: 0},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := restartParentPID(tt.args); got != tt.want {
+				t.Fatalf("restartParentPID() = %d, want %d", got, tt.want)
+			}
+		})
+	}
+}

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "octop"
-version = "0.0.8"
+version = "0.0.9"
 description = "FreeOS — self-hosted multi-user multi-agent assistant with an optional organization OS module (Octop-compatible package name)"
 readme = "README.md"
 license = { text = "MIT" }

src/octop/__init__.py

@@ -2,4 +2,4 @@
 
 from __future__ import annotations
 
-__version__ = "0.0.8"
+__version__ = "0.0.9"