Close all 26 generator readiness gaps (sprints 267-270)
Sprint 268: GR-002/003/006/007/008/016/017/019/021/024 — self-containment,
graduation thresholds, asm/ir/jvm/elixir lang coverage, semanno format.
Sprint 269: GR-005/011/013/015 — prose capture in RequirementsParser,
GateEnforcer, ParitySkewAnalyzer, CrossArtifactConsistencyEngine.
Sprint 270: GR-009/010/012/014/018/020 — CrossFileTransactionGate,
SemanticCompletionGate, ConstrainedProjectionGate, TokenBudgetGate,
CppConstraintRefactorPolicy, NativeDecompositionDepthGuard.
All 50 new tests passing (steps 1873-1882, 5/5 per step).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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