workinf_Blender_Wasm/docs/status/C2-003.md

C2-003 Status

status: done task: undo_redo_save_invariants gate: G2 updated: 2026-08-23 America/New_York

C2-003 adds a bounded corrective history store over the atomic Main store. Commits create one undo snapshot and clear redo; undo/redo restore value, revision, and dirty state; save records a clean snapshot; reopen restores that snapshot and clears transient history. No-op commits do not create history entries.

The focused history test passed 5/5 assertions. Desktop and WASM save/reopen snapshots matched exactly. Deterministic receipt generation, protected legacy hash comparison, typecheck, context/corrective governance, task-context, and git diff --check all exited 0.

Evidence and manifest: tests/golden/corrective/C2-003/. Next corrective task: C3-001.