5.3.0

5.3.0

The Dance Engine, rebuilt from the legacy choreography

• Full legacy choreography port — all 32 hand-written per-beat choreography blocks (8 per BPM tier) ported verbatim from the original card. Every phrase preserves the original arithmetic (sines, seeded jerks, pair-quantized tier-0 sway), so she dances exactly like the legacy card — now with the modular engine underneath.
• Hard cuts at the bar boundary — phrase switches land as deliberate, mechanical pose changes exactly on the beat instead of pre-blended mush. Direction reversals and style switches read as intentional.
• Strobe fill — during tier-3 (160+ BPM) phrases, her halo strobes red on the downbeat and white on off-beats, every beat.
• Seeded pupil darts — deterministic, reproducible dart accents per phrase, restored from the legacy card's idle/processing behavior.

Smoothness & dynamics

• Continuous energy envelope — a cosine-interpolated 64-beat energy arc with a co-prime wobble (repeats only every 6208 beats) drives phrase selection, so the dance builds, peaks, and releases like a real performance instead of a flat loop.
• Choreographed handoffs — the last beats of every phrase glide toward the next phrase's entry pose via flowBlend crossfades, so style switches read as transitions, not teleports.
• In-place BPM retune — when the track's BPM changes within the same personality tier, she retunes her beat timing silently mid-dance without restarting. Cross-tier changes trigger a full, clean restart.
• Anti-metronome guarantees — the verify suite asserts no plateaus over 4096-beat walks and bounded drift, so the dance never looks looped.

Fixes

• Pupil-escape fix — at high BPM, tier-3 darts could translate the iris outside the eye socket. Two layers of defense: a socketClip clipPath on a static wrapper group (geometric guarantee) and a per-tier radial DART_MAX clamp [3, 6, 6, 9] px (physical plausibility). The pupil can never leave the socket again.

Tooling

• Standalone demo.html — the card bundle is now inlined into demo.html at build time, so the demo runs offline via double-click (file://) with no CORS issues.
• New verification scripts — scripts/verify_dance_smoothness.mjs (clamps, no-repeat reachability, hard-cut, energy continuity, acceptance checks A1–A6) and scripts/verify_bop_tail.mjs (bop freeze/resume + retune), both wired into CI.