whetstone_DSL/sprint67_plan.md

Sprint 67 Plan: Refactoring-Aware Transpilation and Round-Trip Stability

Context

Teams will refactor after transpilation. Sprint 67 ensures round-trip stability and controlled drift when code evolves post-port.

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Goals

1. Track semantic drift after manual refactors
2. Enable safe re-projection from changed targets
3. Detect round-trip instability early
4. Preserve migration traceability across iterations

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Steps

Step 899: Semantic drift detector between revisions (12 tests)

Step 900: Round-trip stability checker (source->target->source/IR) (10 tests)

Step 901: Drift severity classifier (10 tests)

Step 902: Refactor intent annotation model (10 tests)

Step 903: Reprojection safety policy (10 tests)

Step 904: Traceability chain generator (origin->current) (8 tests)

Step 905: whetstone_check_semantic_drift MCP tool (8 tests)

Step 906: whetstone_generate_reprojection_plan MCP tool (8 tests)

Step 907: Drift audit report artifact (8 tests)

Step 908: Sprint 67 integration summary + regression (8 tests)

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Stability Rule

• High-severity drift blocks automatic re-projection.