I read this as an adversarial verification of Todo 3 r4 only - I will inspect the specified plan, evidence, implementation, tests, and run isolated validation without modifying product code.


I read this as Todo 3 r4 adversarial verification - I completed it and recorded a needs-fix verdict.

Blockers:
- Raw PII-like customer keys are persisted in sidecar JSONL bytes.
- Byte-identical marker inode replacement is accepted on fresh authority open.

Verified: 42 focused and 49 canonical tests passed; ruff, ty, basedpyright, compileall, no-excuse, and LSP passed. Customer pre-write races correctly append only under pinned profile authority.

Evidence:
- `task-3-sidecar-independent-verification-r4.json`
- `task-3-sidecar-independent-verification-r4-cleanup.json`