HTML-to-UCUF Skill

This skill converts HTML into UCUF JSON for Cocos Creator UI. The current execution spec is docs/html_skill_plan5.md.

Authority order:

• Plan 2 (docs/html_skill_plan2.md): historical evidence only.
• Plan 3 (docs/html_skill_plan3.md): historical transition source.
• Plan 4 (docs/html_skill_plan4.md): prior execution evidence and Plan 4.1 regression closure.
• Plan 5 (docs/html_skill_plan5.md): current execution spec for final fidelity, stale-rule cleanup, and 95% Cocos final gate closure.

Rule Source

• tools_node/lib/html-to-ucuf/rule-registry.json is the single machine-readable rule source of truth.
• tools_node/lib/html-to-ucuf/rule-checkers.js contains rule checker implementations.
• docs/html_skill_plan4.md and docs/html_skill_plan5.md are version deltas and decision records, not the formal rule registry.

Unity 對照：這條流程相當於 UI Toolkit importer + Prefab/Scene sync + Play Mode interaction smoke + Game View final compare；不要把 debug 輸出當成正式通過。

⚠️ Spec Authority: docs/html_skill_plan5.md is the only active execution spec. docs/html_skill_plan.md ~ docs/html_skill_plan4.md are HISTORICAL; do not follow them without consulting docs/html_skill_postmortem.md.

Formal Entry

Formal runs must start from a source package.

node tools_node/run-html-to-ucuf-workflow.js \
  --source-dir <source-package-dir> \
  --main-html <relative-html> \
  --screen-id <screen-id> \
  --bundle <bundle> \
  --editor-screenshot <cocos-editor-screenshot.png> \
  --capture-protocol <final-capture-protocol.json> \
  --capture-report <capture-report.json>

Required source package files:

• ui-design-tokens.json
• colors_and_type.css
• main HTML

Formal flow also requires:

• final replay from source-derived output.
• per-tab replay fragments for tabbed sources.
• runtime sync into assets/resources/ui-spec.
• Plan5 stale-rule and final-fidelity requirements.
• Plan 4.1 rule guard pass.
• runtime interaction smoke when interaction sidecars exist.
• visual fidelity risk pass for semantic, background, and composite fidelity.
• Cocos Editor final gate pass, using a formal capture report whose actualScreenId matches the converted screenId and whose adjusted score is at least 0.95.
• If Cocos final gate fails, workflow summary must include blocker taxonomy and non-empty nextFixes.

Debug Only

These switches always mean debugOnly=true and cannot produce a formal pass verdict:

• --input
• --skip-editor-compare
• --no-runtime-sync
• --no-per-tab-replay
• --editor-screenshot without the formal source package
• --capture-protocol without the formal source package
• missing --capture-report or a capture report from a legacy product preview target

Required Flow

1. Resolve the source package and inject source CSS/tokens.
2. Render or annotate HTML only if needed for conversion.
3. Generate raw layout/skin from the current HTML source package.
4. Optimize layout and auto-fix skin without falling back to old skins.
5. Run final replay from the source-derived output.
6. Replay each tab and write fragment JSON for tabbed sources.
7. Sync final layout/skin/screen into assets/resources/ui-spec.
8. Run Plan 4.1 rule guard.
9. Run Plan5 stale-rule checks when touching workflow/converter/runtime/final-gate logic.
10. Run visual fidelity risk checks for semantic, background, and composite fidelity.
11. Run runtime interaction smoke when interaction sidecars exist.
12. Capture Cocos through the formal route: node tools_node/capture-ui-screens.js --formal-screen-id <screen-id> --uiVersion <workflow-uiVersion> --maxWidth 0.
13. Run HTML source vs Cocos Editor screenshot final gate with --capture-report and 0.95 threshold.
14. If the final gate score is below 0.95, classify the failure as CSS extraction, runtime renderer, capture authority, spec authority, or assetization-required, and emit non-empty nextFixes.
15. Write workflow summary with debugOnly, ruleGuard, visualFidelityRisk, interactionRuntime, runtimeAuthority, finalCapture, finalFidelity, blockerTaxonomy, and nextFixes.

Governance Summary

• Formal runs still require source package entry, runtime sync, strict rule guard, interaction smoke when needed, and Cocos Editor final gate.
• Core converter/runtime/validator logic must stay screen-agnostic; fixture-specific behavior belongs in tests, not in production flow.
• When Cocos final gate is below 0.95, the workflow must fail and emit actionable nextFixes; high browser coverage plus low Cocos score must also emit blocker taxonomy.
• Unsupported CSS, degraded visual fallback, capture authority drift, and runtime authority drift must surface as blockers or tracked advisories from the rule registry, not as silent pass paths.
• Read the exact rule metadata from tools_node/lib/html-to-ucuf/rule-registry.json; do not duplicate the full rule body in this skill document.

Validation Commands

node --check tools_node/run-html-to-ucuf-workflow.js
node --check tools_node/render-html-tab-fragments.js
node --check tools_node/validate-html-to-ucuf-rule-guard.js
node tools_node/test/dom-to-ui-self-test.js --group html-to-ucuf-active-contract
node tools_node/test/dom-to-ui-self-test.js --group html-to-ucuf-fidelity-contract
node tools_node/validate-ui-specs.js --strict --rules tab-fragment-geometry-contract,composite-panel-tab-route-integrity,formal-skin-path,synced-runtime-path-freshness,background-layer-preservation,formal-visual-risk-path,runtime-interaction-smoke-path
node tools_node/validate-html-to-ucuf-rule-guard.js --strict --capture-report <capture-report.json> --expected-screen-id <screen-id>
node tools_node/validate-html-to-ucuf-rule-guard.js --strict --report artifacts/html-to-ucuf-rule-guard.json
node tools_node/compare-html-to-cocos-editor.js --help
node tools_node/check-context-budget.js --changed --emit-keep-note

Notes For Agents

• Do not resurrect Phase B tools as the main path. generate-tab-childpanels.js, runtime-screen-diff.js, and cutover-screen-variant.js are not the formal Plan5 flow.
• DS3 may be used as a fixture, but core converter/workflow/validator code must stay screen-agnostic.
• If the score is low, keep testing the converted JSON from the current HTML source package. Do not switch to default skins or old runtime files to make the gate easier.
• If browser coverage is high but Cocos final gate is low, treat the run as a Plan5 diagnostic failure until blockerTaxonomy and nextFixes identify the next tool/runtime fix.
• If final gate reports a low score, inspect captureAuthority first. A legacy GachaMain/product route mismatch is a blocker, not a converter fidelity result.
• Keep history-not-story, radial-slide-background, and interaction-carousel style regressions as fixtures.
• When adding logic to draft-builder.js, first attach it to the registry-backed draftBuilderStageRules mapping and add a self-test tag.
• Add short Traditional Chinese comments at classifier, background fallback, runtime binding, and formal gate boundaries to explain why old fallback paths stay blocked.