satellite-provider/_docs/06_metrics/retro_2026-06-26_cycle16.md

Retrospective — Cycle 16 (2026-06-26)

Tasks: AZ-1133 (perf gate preflight, 1 SP). 1 task, 1 SP, 1 batch. Mode: cycle-end. Steps 14–16 skipped (shell-harness + docs only; no new attack surface or deploy delta). Previous retro: retro_2026-06-26_cycle15.md

Implementation Summary

Metric	Cycle 16	Δ vs cycle 15
Tasks implemented	1	unchanged
Total complexity delivered	1 SP	unchanged
Blocked tasks	0	unchanged
Auto-fix attempts	0	unchanged

Quality

Gate	Result
Code review	PASS (batch_01_cycle16 — shell + docs)
Step 11 full suite	PASS (run-tests.sh, 457 unit + integration)
Step 12 traceability	PASS — AZ-1133 AC-1..AC-4 rows + Preflight § in performance-tests.md
Step 13 docs ripple	PASS — ripple_log_cycle16.md
Step 14 security	SKIPPED (harness-only)
Step 15 perf	SKIPPED (preflight is operator guard; PT thresholds unchanged)
Step 16 deploy	SKIPPED

Cycle 16 delta

• Perf preflight landed — Step 15 first-run failure mode (unreachable API_URL) now exits 7 with compose-up instructions before PT-01.
• Multi-cycle carry-over closed — cycle 13/14/15 retro Action #1 (perf gate preflight).

Top 3 Improvement Actions (cycle 17 candidates)

1. PT-09 shell harness promotion — optional hardening of inventory perf sub-check (~0.5 SP) — carried from cycle 14
2. Full-script AC-2 blackbox — add a lightweight scripts/ test or CI doc step that runs preflight-only path without full dotnet build (~0.5 SP)
3. Ripple checklist on harness changes — extend implement batch closure template to always touch performance-tests.md when run-performance-tests.sh changes (~0 SP process)

Cycle 16 Verdict

Successful tooling-hygiene cycle — perf operator experience improved; full regression green; no production behavior change.