memory: commit session notes (drone P0, weekly-upgrade-queued, mailu/index updates)

Per AGENTS.md 'Agent memory lives in memory/ (in this repo)' — memory notes
must be committed + pushed like any repo change, not left only in the local
~/.claude symlink target.

memory/MEMORY.md

@@ -8,5 +8,7 @@
 - [Shared recipe-checkout race](shared-recipe-checkout-race.md) — never git-checkout ~/.abra/recipes/<recipe> on cc-ci while its CI build runs; harness deploys from that tree
 - [immich pgvecto.rs DROP DATABASE panic](immich-pgvectors-drop-database-panic.md) — DROP DATABASE crashes immich's postgres image; use pg_dump --clean --if-exists + search_path rewrite
 - [Drone sqlite log extraction](drone-sqlite-log-extraction.md) — copy /data/database.sqlite from drone container, query builds→stages→steps→logs for full step output
-- [plausible upgrade-base trap](plausible-upgrade-base-trap.md) — CI REDs from published 3.0.0 base (no x86_64 arch → 404 → silent exit 1), not the PR; needs UPGRADE_BASE_VERSION=3.0.1+v2.0.0 in cc-ci tests
+- [plausible upgrade-base trap](plausible-upgrade-base-trap.md) — RESOLVED: PR#3 GREEN L4; lessons: check harness base version pre-!testme; backupbot v2 label syntax; TinyLog not FREEZEable; BEAM exit-0 needs restart_policy any
 - [Swarm UpdateStatus convergence gotchas](swarm-updatestatus-convergence-gotchas.md) — N/N is not converged mid stop-first update; paused flag persists forever; only updating/rollback_started are active
+- [drone phase P0 host deploy](drone-phase-p0-host-deploy.md) — orchestrator must nixos-rebuild cc-ci host (/etc/timezone, commit 3bde76f) before phase `drone` can run gitea
+- [Weekly upgrade queued after phases](weekly-upgrade-queued-after-phases.md) — 06-12 cron skipped; auto-runs /upgrade-all when phase queue (drone) finishes; don'\''t systemctl start the timer