Creed gap: both functions only tested with empty/null state — a return 0 at
the body entry point kept the suite green (Creed's exact injection at
overlay.js:631 for drawToneHud; equivalent non-empty branch gut for drawSectionHud).
Fix: two new recording-ctx tests (tests 9–10) that drive real rendering:
• drawToneHud: toneBase='Clean', next change 'Lead' at t=10, currentTime=5
→ assert boxH>0, fillText contains 'Clean' and 'Lead', ctx.fill() called
• drawSectionHud: sections=[Intro@0, Verse@10], currentTime=5
→ assert boxH>0, fillText contains 'Intro' and 'Verse', ctx.fill() called
Named mutations verified RED:
Mut 1: return 0 at drawToneHud body start (overlay.js:631) → test 10 RED
Mut 2: return 0 after drawSectionHud empty-guard → test 11 RED
Shipped code: zero changes. Test files only.
Suite: 262/262 on 0a91f4f (base) → 264/264 (+2 tests)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014uZ169yfoFYArXz962g7KW
Move longestConsecutiveRun, drawChordDiagram, _drawDiagramCached,
drawSectionHud, drawToneHud, drawLyrics out of screen.js IIFE into
plugins/highway_3d/src/overlay.js as export function createOverlay({ diagRenderCache }).
Surprises vs approved contract:
• longestConsecutiveRun (lines 4338–4352) co-moved — called only by drawChordDiagram
• DIAG_SIZE_MIN, DIAG_SIZE_MAX, DIAG_CELL_MAX DELETED from screen.js (lines 573–575);
only users were inside the O-section; moved not copied to avoid drift
• _DIAG_CACHE_MAX DELETED from screen.js factory scope (line 3256); moved not copied
Beyond-subst rewires (2):
1. Factory wrapper createOverlay({ diagRenderCache })
2. _diagRenderCache → diagRenderCache (DI param) in 3 sites in _drawDiagramCached
Base run stated: 253/253 on a993d2b
Post-cut: 262/262 (+9 tests — 8 overlay class-killers + 1 panel-controls stub)
Named mutations verified RED:
• createOverlay({ diagRenderCache: new Map() }) → test 6 RED (ref-severance)
• void _DIAG_CACHE_MAX in screen.js → test 4 RED (bare private)
plugin.json: 3.42.0 → 3.43.0
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014uZ169yfoFYArXz962g7KW
