satellite-provider/_docs/06_metrics/retro_2026-06-26_cycle12.md

Retrospective — Cycle 12 (2026-06-26)

Tasks: AZ-1124 (PT-10 gRPC stream perf, 3 SP). 1 task, 3 SP, 1 batch. Mode: cycle-end. Steps 14 (Security) and 16/16.5 (Deploy/Release) skipped. Previous retro: retro_2026-06-25_cycle11.md

Implementation Summary

Metric	Cycle 12	Δ vs cycle 11
Tasks implemented	1	unchanged
Total complexity delivered	3 SP	+2 SP
Blocked tasks	0	unchanged

Quality

Gate	Result
Code review	PASS (batch_01_cycle12)
Step 11 full suite	PASS (exit 0, ~21 min)
Step 15 perf (PT-01..PT-10)	PASS after GrpcTestHelpers PEM fix
Security	Skipped (harness-only; no prod surface)

Cycle 12 delta

• PT-10 landed — first gRPC perf scenario; closes cycle 9–11 retro Action #2.
• Step 15 caught TLS bug — CreateFromPemFile(api.crt) fails on cert-only PEM for host-side gRPC; fixed to CreateFromPem(text).

Top 3 Improvement Actions (cycle 13 candidates)

1. F-AZ810-2 DateTime → DateTimeOffset on capturedAt (~1 SP) — carry-over
2. Align environment.md integration command with run-tests.sh (docker-compose.tests.yml only) (~0.5 SP) — carry-over
3. Promote PT-09 inventory inline test into shell harness if production SLO tightens (~2 SP) — optional

Cycle 12 Verdict

Successful perf-harness cycle — AZ-1124 delivered PT-10 end-to-end; gRPC stream NFR no longer Unverified. Minor TLS loading fix required at Step 15 gate.