port gsd2 upstream features: scope classifier, composer v2, GPT-5.5, test timeout
- milestone-scope-classifier: add getMilestonePipelineVariant + milestoneRowToScopeInput
wired into auto-dispatch trivial-skip for research/validation phases (#4781)
- auto-prompts: rename GSD→SF identifiers, add isSummaryCleanForSkip, prefs param
on checkNeedsReassessment, buildExtractionStepsBlock from commands-extract-learnings
- unit-context-manifest + unit-context-composer: port v2 typed computed artifacts (#4924)
- skill-manifest: per-unit-type skill filter resolver (#4788, #4792)
- escalation: stub for ADR-011 mid-execution escalation (full port deferred)
- auto-start: extract decideSurvivorAction for testability (#4832)
- models: add gpt-5.5 + gpt-5.4-mini to cost table, router, and models.generated.ts
- types: EscalationArtifact, context_window_override, skip_clean_reassess,
mid_execution_escalation, sketch_scope on SliceRow
- tool-execution: add visibleWidth import (was undefined)
- package.json: add --test-timeout=30000 to prevent parallel tests from freezing machine
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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