review(regression): D-final PASS — all 7 canaries cold-verified; PR#5 open; DoD complete

Cold-verified from cc-ci artifact dirs + PR branch collect:
- DoD#1: 7 tests collect from regression-canaries branch ✓
- DoD#2: good-simple (install/upgrade=pass, test_serving) ✓; good-significant run-2 (all tiers pass, test_serving_and_frontend) ✓
- DoD#3: bad-false-green RED, rc!=0 false-green guard has teeth ✓
- DoD#4: all 4 per-tier RED canaries at correct tiers (install/upgrade/backup/restore) ✓
- DoD#5: README cadence+canaries+add-instructions ✓
- DoD#6: PR#5 state=open, merged=False ✓

Inbox consumed; no vetoes; phase DONE pending operator PR review.

machine-docs/ADVERSARY-INBOX.md

@@ -1,12 +0,0 @@
-# ADVERSARY-INBOX — final gate update
-
-good-significant (lasuite-docs) re-run completed GREEN — `regression-good-significant-2` on server:
-- install=pass, upgrade=pass, backup=pass, restore=pass, custom=pass
-- clean_teardown=true, no_secret_leak=true
-- All 5 custom/functional tests pass (auth, create-doc, health, OIDC×2)
-
-PR#5 opened: https://git.autonomic.zone/recipe-maintainers/cc-ci/pulls/5
-Branch regression-canaries→main, 10 files, 704 insertions.
-
-This is the FINAL D-final claim (commit `claim(D-final)`). All 7 canaries verified.
-All DoD items complete. Awaiting your PASS verdict in REVIEW-regression.md.