# Retrospective — Cycle 13 (2026-06-26)

**Tasks**: AZ-1126 (capturedAt DateTimeOffset, 2 SP). **1 task, 2 SP, 1 batch.**
**Mode**: cycle-end. Step 16.5 (Release) **skipped** (no release harness).
**Previous retro**: `retro_2026-06-26_cycle12.md`

## Implementation Summary

| Metric | Cycle 13 | Δ vs cycle 12 |
|--------|----------|---------------|
| Tasks implemented | **1** | unchanged |
| Total complexity delivered | **2 SP** | -1 SP |
| Blocked tasks | **0** | unchanged |
| Auto-fix attempts | **1** (filter message propagation) | new |

## Quality

| Gate | Result |
|------|--------|
| Code review | PASS_WITH_WARNINGS (batch_01_cycle13) |
| Step 11 full suite | **PASS** (pre-verified in Step 10) |
| Step 14 security | **PASS** (delta) — F-AZ810-2 **resolved** |
| Step 15 perf | **PASS** 11/11 (first run failed: stack not up) |
| Step 16 deploy | **PASS** — `deploy_cycle13.md` |

## Cycle 13 delta

- **F-AZ810-2 closed** — cycle 12 retro Action #1 shipped; `DateTimeOffset` + strict converter eliminates `DateTimeKind` ambiguity on UAV upload path.
- **Filter regression caught in batch** — generic `JsonException` handler initially masked converter diagnostics; fixed by propagating exception message.
- **Security finding → task → closure** — 2 SP dedicated cycle resolved a multi-cycle Low carry-over without scope creep.

## Comparison with cycle 12 retro actions

| Cycle 12 action | Cycle 13 outcome |
|-----------------|------------------|
| F-AZ810-2 DateTimeOffset (~1 SP) | **Done** (AZ-1126) |
| Align `environment.md` integration command | **Open** — not scheduled |
| PT-09 shell harness promotion | **Open** — optional |

## Top 3 Improvement Actions (cycle 14 candidates)

1. **D-AZ795-1** — bump FluentValidation 12.0.0 → 12.1.1 (~1 SP) — sole remaining Low prod dependency finding
2. **Align `environment.md` integration command** with `run-tests.sh` (`docker-compose.tests.yml` only) (~0.5 SP) — third-cycle carry-over
3. **Perf gate preflight** — document or script-check that perf compose stack is up before PT-01 (~0.5 SP) — cycle 13 first-run exit 7

## Cycle 13 Verdict

**Successful security-closure cycle** — AZ-1126 delivered a focused type migration with full gate coverage (security + perf + deploy). One auto-fix in the validation filter; no architecture drift.
