[AZ-509][AZ-510][AZ-511] Cycle 3 closure: deploy + retro + state

Steps 16 (Deploy) and 17 (Retrospective) outputs for cycle 3.

- 03_implementation/deploy_cycle3_report.md — ui/ dev pushed
  (15838c5..09449bd, 5 commits); stage/prod cutover deferred
  per push-scope gate option A.
- 06_metrics/retro_2026-05-13_cycle3.md — cycle 3 retro: 6/9
  pts shipped (AZ-510, AZ-511); AZ-512 deferred to backlog
  at cross-workspace prereq gate (AZ-513 filed on admin/).
- 06_metrics/structure_2026-05-13.md — structural snapshot
  referenced by retro.
- LESSONS.md — appended 3 cycle-3 lessons (process x2,
  architecture x1).
- _autodev_state.md — cycle 3 closed; cycle 4 Step 9 not
  started.

Co-authored-by: Cursor <cursoragent@cursor.com>

_docs/_autodev_state.md

@@ -2,17 +2,19 @@
 
 ## Current Step
 flow: existing-code
-step: 16
-name: Deploy
+step: 9
+name: New Task
 status: not_started
 sub_step:
   phase: 0
   name: awaiting-invocation
   detail: ""
 retry_count: 0
-cycle: 3
+cycle: 4
 tracker: jira
 
 ## Notes
-- Cycle 3 Step 10 (Implement) shipped 6 of 9 points: AZ-510 + AZ-511 done; AZ-512 deferred to backlog/ at its BLOCKING cross-workspace verification gate (admin/ workspace lacks the prerequisite /classes routes). Leftover: `_docs/_process_leftovers/2026-05-13_az-512-admin-classes-prereq.md`.
-- Cycle 2 leftovers still pending (deploy + manual key revocations).
+- Cycle 3 closed 2026-05-13: AZ-510 + AZ-511 shipped (6/9 pts, B3 + F3 closed); AZ-512 deferred to backlog at cross-workspace gate (AZ-513 filed on admin/).
+- Retro: `_docs/06_metrics/retro_2026-05-13_cycle3.md`. Structural snapshot: `_docs/06_metrics/structure_2026-05-13.md`.
+- 7 user-action items in backlog (carry from cycles 2-3): see `_docs/_process_leftovers/`.
+- Pre-Step-9 (cycle 4) sweep: cycle-3 unstaged docs + `ripple_log_cycle3.md` + `security_report_cycle3_delta.md` (untracked) NOT in any commit yet — flag to user before starting cycle 4.