## Changes
### Cancel button (✕)
- New cancel button appears during recording next to stop button
- Tapping ✕ stops recording and **discards audio** — no text inserted
- Tapping ⏹ stops recording and **inserts text** (as before)
### Question prompt support
- Mic button injected into `[data-slot=question-custom-input]` (custom
answer textarea)
- Text insertion via `selectionStart`/`selectionEnd` (textarea ≠
contenteditable)
- MutationObserver detects when question prompt appears
### Solid timer
- Timer background: `#e53935` (opaque red) with white text
- Was `rgba(229, 57, 53, 0.1)` (semi-transparent — text showed through)
- Now fully visible over any text
### Technical
- Refactored UI to use CSS classes instead of single IDs (supports
multiple buttons)
- `insertText()` now takes `target: "composer" | "question"`
- 47 tests, 100% line coverage
Co-authored-by: opencode-agent <agent@slaid098.dev>
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