Browser tools: full accessibility snapshot, trusted input, dialogs, evaluate, and tab controls (#1881)

* feat(browser): replace flat snapshot with ARIA tree and page-side refs

* feat(browser): trusted CDP input with actionability waits

* feat(browser): auto-handle javascript dialogs

* feat(browser): add browser_evaluate

* feat(browser): add scroll, resize, and close_tab tools

* fix(browser): review fixes for snapshot/input/dialog seams

* fix(browser): address review findings on dialog capture, truncation, and keypress targets

* fix(harness): drop resize check that cannot run under parked compositor surfaces

* fix(browser): second review round — snapshot fidelity, key input, dialog scoping

packages/desktop/src/features/browser-webviews/index.ts

@@ -70,6 +70,10 @@ export function registerPaseoBrowserWorkspace(input: BrowserWorkspaceRegistratio
   browserRegistry.registerWorkspace(input);
 }
 
+export function unregisterPaseoBrowser(browserId: string): void {
+  browserRegistry.unregisterBrowser(browserId);
+}
+
 export function getPaseoBrowserWorkspaceId(browserId: string): string | null {
   return browserRegistry.getWorkspaceId(browserId);
 }

packages/desktop/src/features/browser-webviews/registry.ts

@@ -51,6 +51,16 @@ export class PaseoBrowserWebviewRegistry {
     this.workspaceIdsByBrowserId.set(input.browserId, input.workspaceId);
   }
 
+  public unregisterBrowser(browserId: string): void {
+    const webContentsId = this.webContentsIdsByBrowserId.get(browserId) ?? null;
+    if (webContentsId !== null) {
+      this.browserIdsByWebContentsId.delete(webContentsId);
+      this.webContentsIdsByBrowserId.delete(browserId);
+    }
+    this.workspaceIdsByBrowserId.delete(browserId);
+    this.deleteActiveBrowserReferences(browserId);
+  }
+
   public getWorkspaceId(browserId: string): string | null {
     return this.workspaceIdsByBrowserId.get(browserId) ?? null;
   }