feat(compositor): [#223] output-space error budget — maxValueError в единицах результата

[lemone112]

Что

Закрывает #223: ошибка реконструкции compositor-артефакта выражается в ЕДИНИЦАХ РЕЗУЛЬТАТА (px, unitless), а не в долях нормированного прогресса — без perceptual magic numbers.

• Публичный контракт: maxValueError в SpringLinearOptions; эффективный tolerance выводится законом из (диапазон, бюджет ошибки).
• Полная полоса допуска гарантирована до терминального узла артефакта (RED-тест терминальной полосы).
• Единый горизонт артефакта в тестах; pole-space error oracle расширен.
• Size headroom восстановлен отдельным perf-коммитом; value-budget не попадает в controller-бандлы.

История

TDD-цепочка из 12 коммитов (RED → интеграция → закон → полоса → perf), пересобрана на main после #280 (сплит валидаторов #218 уже в main — конфликтные коммиты исключены при rebase).

Доказательства (локально)

• Тесты: 3968 passed (включая 2 RED-коммита в истории — enforce budget, terminal band).
• Size: PASS (все гейты, включая animate+compositor 17500 и velocity-budget пины).
• Typecheck: PASS. Audit: clean.

Контекст плана

Узел COMP-01 трека plans/lab-motion-production (agents-config). Разблокирует COMP-02 (#228) и COMP-03 (#235).

Rollback

Revert-PR squash-коммита; контракт опциональный (maxValueError — opt-in), потребители без опции не затронуты.

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📥 Commits

Reviewing files that changed from the base of the PR and between 9749fbf and 0c5ebb7.

📒 Files selected for processing (26)

• CHANGELOG.md
• conformance/motion-program-v1.json
• docs/errors.md
• src/compositor/cache.ts
• src/compositor/core.ts
• src/compositor/curve.ts
• src/compositor/error-bound.ts
• src/compositor/execution.ts
• src/compositor/segmenter.ts
• src/errors.ts
• test/animate-group-clock-coherence.test.ts
• test/animate-lifecycle-atomicity.test.ts
• test/animate-scale-residual.test.ts
• test/animate-seek-contract.test.ts
• test/animate-surface-batch.test.ts
• test/animate-waapi-lifecycle.test.ts
• test/animate-waapi-long-delay.test.ts
• test/compositor-compile.test.ts
• test/compositor-error-bound.test.ts
• test/compositor-handoff.test.ts
• test/compositor-max-value-error.test.ts
• test/compositor-retarget.test.ts
• test/compositor-serialized-execution.test.ts
• test/compositor-stagger.test.ts
• test/compositor-velocity-budget.test.ts
• test/compositor-webkit-execution.test.ts

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