LabyricornandClaude Opus 5
d5d7091289
Fourteen visual challenge fixtures and the first visuals for reference exhibits A through D, all executing without a line of subject-specific renderer code — which is the claim slice 4g exists to test. A subject the engine needs special handling for is a subject the format cannot express. The standalone CLI validator no longer disagrees with the production one. It had been falling through to ERR_UNSUPPORTED_TARGET for every `visuals.*` binding target, so legal exhibits — including the committed minimal-visual fixture — failed the CLI while passing the runtime. The four section 8.1 visual target families are now recognized in both, and a test runs the CLI validator across every exhibit and challenge fixture so the two paths cannot drift apart again. Co-Authored-By: Claude Opus 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01ShxxFqFmCUDQnQvFNm4TKy
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Slice 4g: challenge fixtures and first exhibit visuals
Implemented September 6, 2026. tools/visual-challenge-fixtures.mjs authors all fourteen PRD 130 challenge compositions and first visuals for Exhibits A–D. Generated .xzbt files are under exhibits/visual-challenges and exhibits/exhibit-{a,b,c,d}.xzbt.
Each composition uses only existing generic primitives, systems, fields, behaviors, bindings and effects. No subject-specific renderer branch was added. The challenge suite validates every document, executes 120 logical ticks twice with different draw frequencies, verifies finite geometry and nonempty frame plans, compares final plans, and verifies cleanup. A nineteenth test checks deterministic standalone generation, embedded fixture identity and JavaScript syntax.
The standalone prototypes/phase4/XZBT-visual-acceptance.html embeds production code and all eighteen fixtures. It provides fixture selection, pause/resume, seed restart, transient spawning, synthetic audio/state sliders and user observation export. Rebuild with npm run build:visual-acceptance.
Exhibit D uses static text labels and state-driven geometry/layer presentation under the 0.1 contract. Live numeric string formatting was not added. The audio-reactive fixture uses the shared signal-binding surface; its review-page slider supplies an explicitly synthetic signal. Full A–D audio, cadence, scenario and final reference-suite obligations remain assigned to their later phases.
The PRD 130 visual judgment is still a user-observed gate, and this artifact is not the 4h benchmark. No browser/display judgment or measured GC6 result is claimed by these tests.