status(cfold): seed phase state and consume inbox

machine-docs/STATUS-cfold.md

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+# STATUS — phase `cfold` (collapse custom-test folders)
+
+SSOT: `/srv/cc-ci/cc-ci-plan/plan-phase-cfold-custom-folder.md`
+
+## Current state
+
+- Phase bootstrapped on `main` after reading the phase plan and `plan.md` §§1, 6.1, 7, 9.
+- Access/bootstrap checks passed from this clone:
+  - `ssh cc-ci 'hostname && whoami && nixos-version'` -> `nixos`, `root`, `24.11.20250630.50ab793 (Vicuna)`
+  - `curl -s "https://$GITEA_URL/api/v1/version"` -> `{"version":"1.24.2"}`
+  - `getent hosts "probe-$RANDOM.ci.commoninternet.net"` -> wildcard DNS resolves (`91.98.47.73` in the bootstrap probe)
+- Adversary notes at `REVIEW-cfold.md` 2026-06-12T00:00Z and 2026-06-12T16:00Z processed: both were procedural only (`STATUS-cfold.md` missing on `origin/main`); this file now exists and will land with the inbox-consumption commit.
+- Current work item: M1 implementation start
+  - decide and record deprecated-folder behavior (`custom/` canonical, no silent coverage loss)
+  - update discovery/manifest/unit tests/docs for `custom/`
+  - migrate cc-ci custom tests and helper modules from `functional/` + `playwright/` into `custom/`
+  - produce coverage-diff proof for the Adversary before any M1 claim
+
+## Gate
+
+No gate claimed yet.
+
+## Blocked
+
+(nothing)