docs(joinir): Phase 286 P3.1 ステータス更新 (COMPLETE)

- ステータスバナーを IN PROGRESS → COMPLETE に更新
- 実装ステップ全て 
- 検証結果に実際の結果を反映
  - Fixture B: Plan line PASS (出力 11)
  - Fixture A: legacy fallback(PoC サブセット外)
  - quick smoke 154/154 PASS

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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2025-12-26 07:56:45 +09:00
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# Phase 286: JoinIR Line AbsorptionJoinIR→CorePlan/Frag 収束)
Status: In Progress (P0, P1, P2, P2.1, P2.2, P2.3, P2.4, P2.4.1, P2.6, P2.7, P3, 286C-2 COMPLETE, **P3.1 IN PROGRESS**)
Status: In Progress (P0, P1, P2, P2.1, P2.2, P2.3, P2.4, P2.4.1, P2.6, P2.7, P3, 286C-2, **P3.1 COMPLETE**)
## Goal
@ -322,7 +322,7 @@ Phase 286 では JoinIR line を “第2の lowerer” として放置せず、*
- Build: cargo build --release PASS
- Regression: quick smoke 0 failed
### P3.1 (Pattern2 Plan化 - Loop with Break) 🚧 IN PROGRESS (2025-12-26)
### P3.1 (Pattern2 Plan化 - Loop with Break) ✅ COMPLETE (2025-12-26)
**背景**:
- Pattern2 (Loop with Break) は P2 で別タスク化されたbreak経路の値再接続が複雑
@ -353,11 +353,11 @@ preheader → header(PHI: i_current, carrier_current)
**実装ステップ**:
1. ✅ Step 0: docs-first - README.md P3.1節追加、pattern2-deferred.md更新
2. Step 1: Fixture B作成 + smoke script追加
3. Step 2: DomainPlan::Pattern2Break + extract_pattern2_plan() 追加
4. Step 3: normalize_pattern2_break() 実装after_bb PHI
5. Step 4: router に Pattern2 追加
6. Step 5: 検証(integration 2本 + quick 154/154
2. Step 1: Fixture B作成 + smoke script追加
3. Step 2: DomainPlan::Pattern2Break + extract_pattern2_plan() 追加
4. Step 3: normalize_pattern2_break() 実装after_bb PHI
5. Step 4: router に Pattern2 追加
6. Step 5: 検証(Fixture B PASS 出力11、quick 154/154 PASS
**PoC サブセット厳守**:
以下は必ず `Ok(None)` で legacy へ fallbackFail-Fast 回帰防止):
@ -375,10 +375,10 @@ preheader → header(PHI: i_current, carrier_current)
- `src/mir/builder/control_flow/plan/normalizer.rs` (変更: normalize_pattern2_break)
- `src/mir/builder/control_flow/joinir/patterns/router.rs` (変更: Pattern2 Plan line routing)
**成功基準**:
- Fixture A (break with update): `phase286_pattern2_frag_poc` PASS (出力 42)
- Fixture B (break without update): `phase286_pattern2_break_no_update_vm` PASS (出力 11)
- Regression: quick smoke 154 PASS, 0 FAILED
**検証結果**:
- Fixture A (break with update): legacy fallbackPoC サブセット外、出力 42
- Fixture B (break without update): Plan line PASS (出力 11)
- Regression: quick smoke 154 PASS, 0 FAILED
## AcceptanceP0