fix(browser): cover internal helper ownership paths

src/main/browser/agent-browser-bridge.test.ts

@@ -889,6 +889,8 @@ describe('AgentBrowserBridge', () => {
     )
     expect(routeCalls).toHaveLength(2)
     expect(routeCalls.at(-1)).toContain('https://old.example/**')
+    expect(routeCalls.at(-1)).toContain('--cdp')
+    expect(routeCalls.at(-1)).toContain('9222')
   })
 
   it('clears stale sessions after direct CDP visibility re-registration', async () => {

src/main/browser/agent-browser-bridge.ts

@@ -2414,6 +2414,8 @@ export class AgentBrowserBridge {
           await this.runAgentBrowserRaw(sessionName, [
             '--session',
             sessionName,
+            '--cdp',
+            String(session.proxy.getPort()),
             'network',
             'route',
             urlPattern,

src/shared/runtime-types.ts

@@ -1059,6 +1059,8 @@ export type BrowserErrorCode =
   | 'browser_no_tab'
   | 'browser_tab_not_found'
   | 'browser_tab_closed'
+  | 'browser_tab_changed'
+  | 'browser_owner_unavailable'
   | 'browser_stale_ref'
   | 'browser_ref_not_found'
   | 'browser_navigation_failed'