Make Mac recording and completed-capture controls respond to trackpad taps #552

Priority: P2 (medium), triaged from the November 4 upstream/community review.

Upstream users report that tap-to-click does not activate completed-capture controls although a physical click does: kitlangton#117.

This is a distinct surface from existing Settings sidebar issue #219. Apparent has not reproduced this failure; investigate actual routed controls rather than assuming the sidebar gesture fix applies. Related recording-control migration: #304.

Acceptance:

• Reproduce on an installed Mac candidate with tap-to-click enabled using synthetic capture content.
• Verify tap and physical click for Finish/Cancel and completed-capture actions; preserve keyboard and accessibility activation, focus restoration and exactly-once actions.
• Implement the affected coherent control slice under current Electron migration policy and preserve the working route until accepted.
• Run shared behavior/real bridge checks and focused Mac input/window proof. Inspect resulting bundle and clipboard behavior without sending to a real agent session.

Implementation follows current AGENTS.md: keep changes owner-local; when changing a Desktop user workflow, include the smallest coherent Electron/React/TypeScript slice, preserve native capture safety, and document routing/rollback. Update the feature map only for actual behavior/status changes. Require focused checks and affected native-platform proof; inspect real bundle text/images when output changes. No upstream report is proof of reproduction in Apparent.