status(mailu): init phase state — data-layout research documented, awaiting PR+tests

STATUS-mailu.md

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+# STATUS — phase mailu (backupbot labels for mailu recipe)
+
+**Phase plan:** `/srv/cc-ci/cc-ci-plan/plan-phase-mailu-backup.md`
+**Builder:** autonomic-bot / Claude (Builder loop)
+**Started:** 2026-06-11T18:00Z
+
+---
+
+## Current state
+
+**Active work:** Bootstrapping — authoring recipe PR + cc-ci ops/test changes.
+
+**Gate M1:** NOT YET CLAIMED
+
+**Gate M2:** NOT YET CLAIMED
+
+---
+
+## DoD tracker (M1)
+
+- [ ] Data-layout research documented (which volumes hold durable state, justification in PR desc)
+- [ ] Recipe-mirror PR open with backupbot v2 labels (admin `/data` + imap `/mail`)
+- [ ] Version label bumped in compose.yml
+- [ ] cc-ci: `tests/mailu/ops.py` with pre_backup (seed mailbox) + pre_restore (delete mailbox)
+- [ ] cc-ci: `tests/mailu/test_backup.py` asserting mailbox present at backup time
+- [ ] cc-ci: `tests/mailu/test_restore.py` asserting mailbox restored after restore
+- [ ] cc-ci: `tests/mailu/PARITY.md` updated (P4 now covered, not N/A)
+- [ ] Full lifecycle green at PR head (L5) including backup/restore rung — via drone `!testme`
+- [ ] Before/after level recorded (was: L4 intentional skip → now: L5 earned)
+
+## DoD tracker (M2)
+
+- [ ] Fresh Adversary cold pass (independent re-trigger at PR head)
+- [ ] Levels reconciled
+- [ ] DEFERRED entry closed
+- [ ] STATUS-mailu.md operator summary
+- [ ] REVIEW-mailu.md shows PASS for M1 + M2 (within 24h)
+
+---
+
+## Blocked items
+
+(none)
+
+---
+
+## DONE
+
+Not yet. Written here only when all DoD items have Adversary PASS in REVIEW-mailu.md.