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/preload.ts

@@ -76,6 +76,8 @@ contextBridge.exposeInMainWorld("paseoDesktop", {
   browser: {
     registerWorkspaceBrowser: (input: { browserId: string; workspaceId: string }) =>
       ipcRenderer.invoke("paseo:browser:register-workspace-browser", input),
+    unregisterWorkspaceBrowser: (browserId: string) =>
+      ipcRenderer.invoke("paseo:browser:unregister-workspace-browser", browserId),
     setWorkspaceActiveBrowser: (input: { workspaceId: string; browserId: string | null }) =>
       ipcRenderer.invoke("paseo:browser:set-workspace-active-browser", input),
     openDevTools: (browserId: string) =>