Browser: suppress Chrome restore prompt

src/browser/chrome.profile-decoration.ts

@@ -180,3 +180,11 @@ export function decorateClawdProfile(
     // ignore
   }
 }
+
+export function ensureProfileCleanExit(userDataDir: string) {
+  const preferencesPath = path.join(userDataDir, "Default", "Preferences");
+  const prefs = safeReadJson(preferencesPath) ?? {};
+  setDeep(prefs, ["exit_type"], "Normal");
+  setDeep(prefs, ["exited_cleanly"], true);
+  safeWriteJson(preferencesPath, prefs);
+}

src/browser/chrome.test.ts

@@ -7,6 +7,7 @@ import { afterEach, describe, expect, it, vi } from "vitest";
 
 import {
   decorateClawdProfile,
+  ensureProfileCleanExit,
   findChromeExecutableMac,
   findChromeExecutableWindows,
   isChromeReachable,
@@ -103,6 +104,18 @@ describe("browser chrome profile decoration", () => {
     }
   });
 
+  it("writes clean exit prefs to avoid restore prompts", async () => {
+    const userDataDir = await fsp.mkdtemp(path.join(os.tmpdir(), "clawdbot-chrome-test-"));
+    try {
+      ensureProfileCleanExit(userDataDir);
+      const prefs = await readJson(path.join(userDataDir, "Default", "Preferences"));
+      expect(prefs.exit_type).toBe("Normal");
+      expect(prefs.exited_cleanly).toBe(true);
+    } finally {
+      await fsp.rm(userDataDir, { recursive: true, force: true });
+    }
+  });
+
   it("is idempotent when rerun on an existing profile", async () => {
     const userDataDir = await fsp.mkdtemp(path.join(os.tmpdir(), "clawdbot-chrome-test-"));
     try {

src/browser/chrome.ts

@@ -13,7 +13,11 @@ import {
   type BrowserExecutable,
   resolveBrowserExecutableForPlatform,
 } from "./chrome.executables.js";
-import { decorateClawdProfile, isProfileDecorated } from "./chrome.profile-decoration.js";
+import {
+  decorateClawdProfile,
+  ensureProfileCleanExit,
+  isProfileDecorated,
+} from "./chrome.profile-decoration.js";
 import type { ResolvedBrowserConfig, ResolvedBrowserProfile } from "./config.js";
 import { DEFAULT_CLAWD_BROWSER_COLOR, DEFAULT_CLAWD_BROWSER_PROFILE_NAME } from "./constants.js";
 
@@ -26,7 +30,11 @@ export {
   findChromeExecutableWindows,
   resolveBrowserExecutableForPlatform,
 } from "./chrome.executables.js";
-export { decorateClawdProfile, isProfileDecorated } from "./chrome.profile-decoration.js";
+export {
+  decorateClawdProfile,
+  ensureProfileCleanExit,
+  isProfileDecorated,
+} from "./chrome.profile-decoration.js";
 
 function exists(filePath: string) {
   try {
@@ -178,6 +186,8 @@ export async function launchClawdChrome(
       "--disable-background-networking",
       "--disable-component-update",
       "--disable-features=Translate,MediaRouter",
+      "--disable-session-crashed-bubble",
+      "--hide-crash-restore-bubble",
       "--password-store=basic",
     ];
 
@@ -246,6 +256,12 @@ export async function launchClawdChrome(
     }
   }
 
+  try {
+    ensureProfileCleanExit(userDataDir);
+  } catch (err) {
+    log.warn(`clawd browser clean-exit prefs failed: ${String(err)}`);
+  }
+
   const proc = spawnOnce();
   // Wait for CDP to come up.
   const readyDeadline = Date.now() + 15_000;