- New TitleEditor: minimal tiptap (Document+Paragraph+Text+Placeholder)
- Single-paragraph constraint prevents Enter from creating new lines
- contenteditable div enables visual word-wrap (no horizontal scroll)
- Enter→submit+blur, Shift+Enter blocked, Escape→blur
- Replace <Input> in create-issue modal and <input> in issue-detail
- Remove titleDraft state/titleFocusedRef/sync effect from issue-detail
- Fix duplicate React key: TitleEditor key={`title-${id}`}
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
