Why: Headers, HITL details, tool lists, and status words used faint text, semantic colors were used as text, and the molv sidebar primary button matched the navy surface. There was no control for --ui-font-size.
Evidence: npx vitest run (17 files, 81 tests), npx tsc --noEmit, and knip unused exports 43 <= 43 passed in modules/frontend.
Impact: Content classes move to --text-dim or *-text. Sidebar active, focus, and the new-task button use the sidebar tokens. Settings gains 小/标准/大/特大, stored only in localStorage as ui.fontSize. Before: no font-size control and a 1:1 new-task button on molv. After: four local sizes and a light sidebar button.
Refs: feature/contrast-typography
Co-authored-by: Cursor <cursoragent@cursor.com>
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