verdict: READY

notes:
  - All six acceptance criteria are observable: AC-1..AC-5 are concrete pytest node-id invocations with expected boolean outcomes, AC-6 is a deterministic `rg` static check that resolves to empty output.
  - The file list covers the three production sites of the `hasattr(..., "safe_optimize")` shim verified in the tree (mempalace_code/miner.py:3681, mempalace_code/convo_miner.py:402, mempalace_code/watcher.py:404) plus storage.py for the adapter definition, and the four corresponding test files.
  - The runtime_checkable Protocol + MagicMock interaction (a bare MagicMock will match SafeOptimizeStore because it auto-creates `safe_optimize`) is explicitly acknowledged in the design notes with a fix path (patch the module-level `optimize_store` seam or use a small spec class). This means the existing tests at tests/test_miner.py:1313 (test_mine_calls_optimize_once), tests/test_miner.py:1787 (test_mine_optimize_disabled_via_env), tests/test_miner.py:1846 (test_mine_backup_before_optimize_env), and tests/test_convo_miner.py:30 (test_mine_convos_calls_optimize_once) will continue to work through the adapter or be updated as the file-list change description states.
  - LanceStore.safe_optimize() bool contract is preserved, so existing direct tests in tests/test_storage.py:1034 (TestSafeOptimize) and tests/test_backup.py retention tests continue to assert backup, retention, exception, and verification behavior unchanged.
  - Out_of_scope is precise: no LanceDB optimize semantics, no removal of LanceStore.safe_optimize, no default config changes (optimize_after_mine, backup_before_optimize defaults remain).
  - DrawerStore.optimize() at storage.py:180 is already a no-op default, so the unsupported-store branch of the adapter (`store.optimize()` returning OptimizeResult(ok=True, supported=False)) preserves legacy behavior without surprising side effects.
  - AC-2 verification of "underlying table optimize method is not called" is achievable by patching `store._table.optimize` (mirrors the existing pattern in tests/test_storage.py:1096) while the adapter wraps the same fail-closed gate.
  - AC-6 grep pattern `hasattr\([^\n]*safe_optimize` is correctly scoped to mempalace_code/ and matches all three production occurrences that the plan removes.

gaps: []
