feat: text-polish system, three new components, chromatic_wipe transition - #211
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…tion Text finishing toolkit (schema + engine): - text.states/text.swap: label-to-label swap (outgoing blurs up, incoming unblurs from below), box sized on the longest label. - text.caret: a line/block caret pinned to a typewriter's reveal head. - shimmer: light-sweep animation composited SrcATop so it only lights painted glyph pixels, not the box. - char_* presets gain direction/distance/scale_from/jitter+seed/ink_from tuning knobs. New components: - pointer: simulated mouse pointer (arrow + click ring) sharing waypoint choreography with cursor, for product walkthroughs. - number_wheel: odometer-style rolling digit reels, distinct from counter's value interpolation. - success_check: self-drawing checkmark in a halo with pop + settling rotation, replacing the hand-assembled shape+svg+scale_in stack. Engine/schema: - chromatic_wipe slide transition (red/cyan edge split at the peak, recomposing by the end). - animated_box_size and shimmer_effect regression tests; chromatic_wipe transition test. Docs: CLAUDE.md and README updated for the new components/finishes; new skill rule pages for card-resize, char-animation-tuning, hyperframes mapping, number-wheel, pointer walkthrough, streaming-text, text-polish. Not included: taap-it.mp4 (untracked stray render output in repo root, left out of this commit).
ink_from_starts_at_the_given_colour_and_settles_to_the_texts_own used char_scale_in specifically because it "leaves alpha alone" — but the preset ties its scale to the same progress `t` the colour ramp uses, so at t=0.1 the glyph paints at 10% of a 90px font. That's thin enough that anti-aliasing can leave zero pixels at exactly alpha==255, depending on subpixel glyph placement — which differs by Skia build/ font metrics between machines, hence green locally and red in CI. The fill colour is uniform across a unit regardless of AA coverage, so weighting the mean by alpha reads the same value without requiring any pixel to be fully opaque.
…comments The seven new .claude/skills/rustmotion/rules/*.md pages (plus the matching additions to CLAUDE.md and the arc recipe in motion-path.md) were authored in French, following the existing convention for that directory — but that convention wasn't the right call for net-new content, so they're English now. Pre-existing French elsewhere in those two files is untouched. Also trimmed a handful of comments in pointer.rs and text.rs that restated the line right below them without adding anything (per-vertex labels on a coordinate literal, "Draw fill" above a call to draw_text_with_fallback). Read through number_wheel.rs and success_check.rs too — their comments carry real rationale (why a scale curve is isolated, why the stroke waits on the halo) rather than padding, so left as-is.
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Text finishing toolkit (schema + engine):
New components:
Engine/schema: