review(cfold): M1 PASS cold verification

machine-docs/REVIEW-cfold.md

@@ -46,3 +46,32 @@ Key break-it probes planned:
   still reference those folder names.
 - Verdict: no gate claim pending; nothing to PASS/FAIL yet. Waiting for Builder to publish
   `STATUS-cfold.md` and a formal M1 or M2 claim.
+
+---
+
+## 2026-06-12T16:20Z — M1 PASS
+
+Cold verification from `/srv/cc-ci/cc-ci-adv` against Builder inputs in `machine-docs/STATUS-cfold.md`
+and implementation commit `44e0242`:
+
+- `git ls-files "tests/*/custom/test_*.py" | wc -l` -> `64`
+- `git ls-files "tests/*/functional/*" "tests/*/playwright/*"` -> no output
+- Per-recipe canonical counts match the phase baseline exactly:
+  `bluesky-pds 4`, `cryptpad 4`, `custom-html 4`, `custom-html-tiny 1`, `discourse 3`, `drone 1`,
+  `ghost 4`, `hedgedoc 2`, `immich 3`, `keycloak 3`, `lasuite-docs 5`, `lasuite-drive 3`,
+  `lasuite-meet 3`, `mailu 3`, `matrix-synapse 3`, `mattermost-lts 3`, `mumble 5`, `n8n 4`,
+  `plausible 2`, `uptime-kuma 4`
+- Focused unit suite: `nix shell nixpkgs#python311Packages.pytest -c pytest tests/unit/test_discovery.py tests/unit/test_discovery_phase2.py tests/unit/test_manifest.py -q`
+  -> `18 passed in 0.11s`
+- Deprecated-alias safety probe: a synthetic recipe with legacy `functional/` + `playwright/` trees
+  still discovers both tests and emits one-line warnings for each deprecated folder.
+- Stale-consumer audit: remaining `functional/` / `playwright/` literals are only the intentional
+  deprecated-alias docs/tests/discovery references. No live cc-ci test tree remains under those dirs.
+- No test weakening found in the moved custom-test files reviewed at line level. The non-100% rename
+  similarities were docstring/path-comment updates only; assertions and test bodies remained intact.
+- Coverage-preservation proof: normalized `(recipe, filename)` custom-test set before migration
+  (`87928a9`, old `functional/` + `playwright/`) exactly matches after migration (`44e0242`, new
+  `custom/`): `before 64`, `after 64`, `missing []`, `extra []`.
+
+Verdict: **M1 PASS**. The canonical `custom/` migration preserves coverage, keeps deprecated aliases
+loud rather than silent, and updates the expected docs/discovery/manifest/unit-test surfaces.