# REF-2108: Session Retrospective 2026-03-19-D1

**Applies to:** FXA project
**Last updated:** 2026-03-19
**Last reviewed:** 2026-03-19
**Status:** Active

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## Session Retrospective — 2026-03-19-D1

### Actions Taken

**Code refactoring (FXA-2107):**
- Created FXA-2107-CHG → Codex + Gemini review → revised plan (dropped item 4)
- Implemented: core/source.py, Traversable fix, find_document refactor
- 3 rounds of code review until both >= 9

**Workflow SOPs (COR-1600~1606):**
- Updated COR-1600, 1601 (sequence diagrams, iteration mode, review scoring, Lead Reviewer)
- Created COR-1602 (Parallel Review), 1603 (Parallel Implementation), 1604 (Exploration)
- Created COR-1605 (Sequential Pipeline), COR-1606 (Workflow Selection)
- Added "Workflow —" prefix to all 16xx titles

**af update (FXA-2104):**
- PRP-2104 design spec → 3 rounds COR-1602 review (6.2 → 8.3 → 9.2)
- Implementation via COR-1601 → 3 rounds code review (7 → 8 → 9.0)
- core/parser.py + commands/update_cmd.py + 43 tests

**af rename (FXA-2105):**
- PRP-2105 → COR-1602 review → Codex 5/10 (over-engineering), Gemini 9.25
- Rejected. Improved README documentation instead

**Process SOPs:**
- Created COR-1102 (Create Proposal) → 3 rounds review (8.2 → 8.8 → 9.3)
- Created COR-1201 (Discussion Tracking) — D item lifecycle protocol
- Updated COR-1200 (Session Retrospective) — added Step 0 D item check

**Release v0.5.0:**
- Added af changelog command + CHANGELOG.md bundled in package
- Version bump 0.4.3 → 0.5.0
- Published to PyPI via GitHub Actions CI

### Discussion Items (D1-D17)

| DN | Status | Parent | Source | Topic |
|----|--------|--------|--------|-------|
| D1 | Done | — | User | Retrospective 保存位置 → FXA 项目层 area 21 |
| D2 | Done | — | User | 双模型 review → COR-1602 |
| D3 | Done | — | User | self-iteration 默认开启 + 关闭开关 |
| D4 | Done | — | User | 所有 SOP 加 sequence diagram |
| D5 | Done | — | User | 16xx Workflow prefix |
| D6 | Done | — | Codex+Gemini | 1603/1604 output_retention 判据 |
| D7 | Done | — | Codex | COR-1606 Workflow Selection decision tree |
| D8 | Done | — | Codex+Gemini | COR-1605 Sequential Pipeline |
| D9 | Done | — | User | 评分标准 >=9, decision matrix |
| D10 | Done | — | Codex | COR-1600 Lead Reviewer 规则 |
| D11 | Done | — | User | 讨论项建 REF，一天一个 |
| D12 | Done | — | User | af update 命令 → PRP-2104 → 实现 |
| D13 | Done | — | User | af rename → PRP-2105 → Rejected |
| D14 | Done | — | Claude | COR-1102 Create Proposal SOP |
| D15 | Done | D12 | Codex | H1 语义校验 + test docstring 修正 |
| D16 | Done | — | User | COR-1201 Discussion Tracking SOP |
| D17 | Done | — | User | af changelog 命令 + v0.5.0 发布 |

### Commits (fx_alfred)

| Hash | Description |
|------|------------|
| 2fc184e | feat: code quality refactoring + workflow SOPs |
| ae3bd4e | chore: remove old COR-1600/1601 filenames |
| d6a968d | feat: add af update command |
| 7404fa4 | fix: H1 semantic validation + test alignment |
| be62ad3 | docs: add af update examples to README |
| fb3671d | feat: add COR-1201 Discussion Tracking SOP |
| 26def03 | feat: add COR-1102 Create Proposal SOP |

### Commits (alfred_ops)

| Hash | Description |
|------|------------|
| 810499f | docs: FXA-2107 CHG + session retrospective |
| c192fd0 | docs: FXA-2104 PRP |
| 8d7c810 | docs: FXA-2105 PRP (rejected) |

### New Documents Created

| Document | Type | Layer |
|----------|------|-------|
| COR-1102 | SOP | PKG | Create Proposal |
| COR-1201 | SOP | PKG | Discussion Tracking |
| COR-1602 | SOP | PKG | Workflow — Multi Model Parallel Review |
| COR-1603 | SOP | PKG | Workflow — Parallel Module Implementation |
| COR-1604 | SOP | PKG | Workflow — Competitive Parallel Exploration |
| COR-1605 | SOP | PKG | Workflow — Sequential Pipeline |
| COR-1606 | SOP | PKG | Workflow — Selection |
| FXA-2107 | CHG | PRJ | Code Quality Refactoring |
| FXA-2104 | PRP | PRJ | AF Update Command |
| FXA-2105 | PRP | PRJ | AF Rename Command (Rejected) |
| core/source.py | Code | — | Source metadata consolidation |
| core/parser.py | Code | — | Document metadata parser |
| commands/update_cmd.py | Code | — | af update command |

### Automation Candidates

| Pattern | Suggested Action | Priority |
|---------|-----------------|----------|
| D1/D2/D3 session numbering | `af create` auto-increment daily session number | Low |
| COR 文档无法通过 af 创建 | Allow `af create --prefix COR` with `--pkg-source` flag | Medium |

### Repeated Patterns

| Pattern | Count | Improvement |
|---------|-------|-------------|
| COR-1602 review → revise → re-review | 5 times | Already standardized in workflow SOPs |
| /team codex+gemini "review X" | ~10 dispatches | Could create a `/review` skill shortcut |
| Commit after each milestone | 10 commits | Good practice, keep doing |

### Key Learnings

1. **Dual-model review catches blind spots** — Item 4 (protocol unification) rejected by both; af rename rejected by Codex while Gemini approved
2. **Codex is consistently stricter than Gemini** — average delta ~1.5 points; Codex finds real implementation issues
3. **COR-1602 (Parallel Review) is the workhorse** — used for every design and code review this session
4. **Rejected PRPs have value** — FXA-2105 documents why af rename was not built, preventing future re-discussion
5. **Bottom-up implementation** (core → commands) reduces parallel merge conflicts
6. **Real-time D item persistence** is critical — established in COR-1201
7. **output_retention** (composable vs competitive) is a clean hard criterion for workflow selection
8. **SOP review itself benefits from the same review process** — COR-1102 went through 3 rounds
9. **Code changes must go through /team** — established as team rule
10. **Decision tree + quick reference table** makes workflow selection much faster than reading all SOPs

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## Change History

| Date | Change | By |
|------|--------|----|
| 2026-03-19 | Initial version (D1 retrospective) | Frank + Claude |
| 2026-03-19 | Updated with D2-D13 | Frank + Claude |
| 2026-03-19 | Final session retrospective: D14-D16, full commit log, repeated patterns, all learnings | Frank + Claude |
