feat(cowork): replace full-screen permission modals with a lightweight bottom-docked panel

[WuFenG-Hub]

Background

The cowork permission confirmation (tool permissions such as Bash/Edit, and AskUserQuestion) is rendered as a full-screen centered modal (fixed inset-0 backdrop covering the whole viewport). This blocks the user from scrolling back to re-read the surrounding conversation before deciding, and the modal is visually heavy for a quick allow/deny.

Change

Replace CoworkPermissionModal + CoworkQuestionWizard with a single bottom-docked, non-blocking confirmation panel (CoworkPermissionPanel):

• Docks at the bottom like a browser download bar — no full-screen backdrop, the conversation stays readable and scrollable.
• Compact one-line collapsed state: icon + one-line summary + [Deny] [Approve] small buttons; details expand inside the panel (tool JSON / options), not as a new full-screen layer.
• AskUserQuestion options render as compact pills; multi-question uses an in-panel 1/N stepper (no separate wizard).
• Risk-tiered emphasis: dangerous Bash patterns (rm -rf, sudo, dd, mkfs, ...) get a red border + warning, still without covering the screen.
• bypassPermissions auto-confirm (auto-confirm header) logic in coworkPermissionRisk.ts is unchanged.

Contract preserved

The permission request/response contract is untouched: allow/deny with updatedInput (including question answers) is passed through identically, so the cowork runner flow is unaffected.

Verification

• Changed files lint clean; npm run build passes.
• Production bundle contains the new panel + slide-up animation; old modal components removed.
• Real-harness interaction test pending next release (dual-instance data-sharing makes a dev-side live test non-trivial).