---
title: Sprint Retrospective - SPRINT-2026-01-09
type: sprint-retrospective
date: 2026-01-11
sprint: SPRINT-2026-01-09
tags: [sprint, retrospective]
---

# Sprint Retrospective: SPRINT-2026-01-09

## Sprint Metrics
- **Planned Points**: 28
- **Completed Points**: 28
- **Velocity**: 100%
- **Sprint Health**: 🟢 GREEN - Flowing

## Velocity Trend
- This Sprint: 28 points
- 3-Sprint Average: 34.7 points (previous 3 sprints)
- Trend: ↓ (lower scoped sprint)

## What Went Well
- Clear lane boundaries and dependency ordering kept the sprint unblocked and fully shippable.
- Evidence-first DR/ADR workflow made execution tasks precise and validation-oriented.
- Publish → codegen → typecheck ordering and drift gates reduced integration risk across lanes.

## What Could Be Improved
- `ph sprint burndown` generated a Markdown file without front matter, breaking `ph validate --quick` until fixed.
- No automated guard existed to prevent a generator from emitting validation-invalid markdown.

## Action Items
- None (no new follow-ups identified during close).

## Completed Tasks
- ✅ TASK-002: Investigate: Vault seeding + secrets contract for Cosmo/MinIO (no leakage)
- ✅ TASK-008: Implement: Router supergraph sync from Cosmo (Option B)
- ✅ TASK-006: Implement: v2 Cosmo+MinIO baseline (from legacy reference)
- ✅ TASK-005: Kickoff: v0.5.0 registry pipeline discovery (evidence dirs + next-up ordering)
- ✅ TASK-010: Implement: v2 registry-backed codegen wiring (Cosmo fetch + drift gate + CI ordering)
- ✅ TASK-009: Implement: v2 schema harvester publish/check + mirrors + report hardening (Option A)
- ✅ TASK-003: Investigate: Router consumes Cosmo supergraph (pull model + auth + refresh)
- ✅ TASK-007: Cutover: Replace MinIO with SeaweedFS S3 gateway
- ✅ TASK-004: Investigate: Harvester publish workflow (SDL sources, mirror updates, report contract) + codegen wiring
- ✅ TASK-001: Investigate: Cosmo+MinIO baseline wiring strategy (topology, versions, posture)

## Carried Over
- None.
