fix(skills): add rendering guardrails to hyperframes skill#217
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miguel-heygen merged 1 commit intomainfrom Apr 7, 2026
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fix(skills): add rendering guardrails to hyperframes skill#217miguel-heygen merged 1 commit intomainfrom
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Adds critical constraints discovered from eval analysis of 27 agent-generated compositions: - Ban `repeat: -1` (broke loading-spinner, prompt 20) - Ban async timeline construction (broke particle-logo, prompt 16) - Enforce minimum font sizes: 16px data labels, 20px body text (prompts 7, 8, 13, 14, 15, 19 all had illegible small text) - Ban full-screen dark linear gradients (prompts 3, 5, 10, 14 all showed H.264 color banding) - Mandate `<link>` font loading over CSS `@import` (prompts 7, 24 had font loading races) - Updated output checklist with all new constraints Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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## Summary Adds a new lint rule `gsap_infinite_repeat` that flags `repeat: -1` in GSAP timelines as an error. This is a hard enforcement of the skill guardrail added in PR #217. ## What it fixes The deterministic capture engine (`HeadlessExperimental.beginFrame`) seeks to exact frame times on a paused GSAP timeline. When a timeline contains `repeat: -1`, the timeline duration is infinite, which causes the capture engine to produce incorrect/blurry output. **Eval prompt #20** (loading-spinner, scored 2.0/5) used `repeat: -1` on a dots animation cycle, producing "a highly compressed and blurry loading animation lacking visual clarity and professional polish." ## Changes - `packages/core/src/lint/rules/gsap.ts` — new `gsap_infinite_repeat` rule (regex scan for `repeat: -1`) - `packages/core/src/lint/rules/gsap.test.ts` — 2 new tests (detects infinite repeat, allows finite repeat) ## Test plan - [x] `pnpm --filter @hyperframes/core test` — all 429 tests pass - [x] Rule catches `repeat: -1` and reports as error with fix hint - [x] Rule does not flag `repeat: 4` (finite repeats)
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Summary
Adds critical rendering constraints to the
hyperframesskill discovered from eval analysis of 27 agent-generated compositions. These guardrails prevent agents from producing compositions that technically work but render poorly.What it fixes
repeat: -1<link>fonts over CSS@importChanges
repeat: -1ban, async timeline ban, items 8-9 to "Never do" listTest plan
/hyperframesinvocation