MANUAL RUN: try the Agent Office Tauri shell (Dock icon, Cmd-Q, Dock click) #2284

About 5 minutes, on your Mac. Checks that the windowless Tauri shell from #2282 does what it should.

Steps

1. bun install --frozen-lockfile && cd apps/agent-office && bun run desktop:build (builds dist/agent-office-darwin-arm64).
2. cd shell && RB_BINARY=../dist/agent-office-darwin-arm64 cargo run
3. Check each, and note which fail:
   • An "Agent Office" icon appears in the Dock, and a menu bar shows while it is focused.
   • Chrome opens the office in an --app window (the binary does this itself).
   • Close the Chrome window, click the Dock icon: Chrome comes back forward. (If the window stays closed, say so: the shell only focuses Chrome, it doesn't reopen the page.)
   • Cmd-Q on the shell: the binary stops (pgrep -fl agent-office shows nothing) and the Chrome window goes dead.
   • Frame rate and look in the Chrome window are unchanged.

What happens after

If it passes, the shipping work follows (a worker can do it, no owner hands except the Apple secrets):

• real icon (replace the placeholder orange square in shell/icons/)
• bundle.macOS.entitlements file: start from Bun's five keys (guide) and trim to what Agent Office needs
• add the shell to scripts/ci-apps.ts and desktop-drop.yml (a per-OS Tauri build job)
• signing and notarizing through cargo tauri build using the existing Apple secrets (APPLE_SIGNING_IDENTITY, APPLE_API_KEY, APPLE_API_ISSUER, APPLE_API_KEY_PATH), which you set
• a Reopen that reopens the page if the Chrome window was closed, if step 3 shows it is needed

If it fails, reply with which box and the terminal output.

Part of #2282. Leaves this open until you've run it.