phase29ak(p4): remove pattern1 guard from single_planner

docs/development/current/main/phases/phase-29ak/P4-REMOVE-SINGLE_PLANNER-PATTERN1-GUARD-INSTRUCTIONS.md

@@ -0,0 +1,51 @@
+# Phase 29ak P4: Remove Pattern1 guard from single_planner
+
+Date: 2025-12-29  
+Status: Ready for execution  
+Scope: single_planner の特例削除（仕様不変）＋ docs 更新  
+Goal: Pattern1 guard を planner/facts 側 SSOT に一本化する
+
+## Objective
+
+- single_planner の Pattern1 guard を削除
+- fallback 側で ctx による抑制を追加し、契約を二重化
+- 観測差分なし（ログ文字列は変えない）
+
+## Non-goals
+
+- rule順序SSOTの CandidateSet 移管
+- extractor fallback の削除
+- 新 env var / 新ログ追加
+
+## Implementation Steps
+
+### Step 1: Pattern1 guard を削除
+
+Update:
+- `src/mir/builder/control_flow/plan/single_planner/rules.rs`
+
+### Step 2: fallback 側で Pattern1 抑制
+
+Update:
+- `src/mir/builder/control_flow/plan/single_planner/rules.rs`
+
+Notes:
+- `ctx.pattern_kind != Pattern1SimpleWhile` のとき Pattern1 fallback を `Ok(None)` にする
+
+### Step 3: docs / CURRENT_TASK 更新
+
+Update:
+- `docs/development/current/main/phases/phase-29ak/README.md`
+- `docs/development/current/main/10-Now.md`
+- `docs/development/current/main/30-Backlog.md`
+- `CURRENT_TASK.md`
+
+## Verification
+
+- `cargo build --release`
+- `./tools/smokes/v2/run.sh --profile quick`
+- `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
+
+## Commit
+
+- `git add -A && git commit -m "phase29ak(p4): remove pattern1 guard from single_planner"`

docs/development/current/main/phases/phase-29ak/README.md

@@ -29,3 +29,10 @@ Goal: single_planner の「順序・名前・ガード」の SSOT を 1 箇所
 - ねらい: Pattern8 static box filter を planner/facts 側 SSOT に一本化
 - 完了: single_planner の Pattern8 特例フィルタを削除（debugログは SSOT ではない）
 - 検証: `cargo build --release` / `./tools/smokes/v2/run.sh --profile quick` / `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
+
+## P4: single_planner から Pattern1 guard を撤去
+
+- 指示書: `docs/development/current/main/phases/phase-29ak/P4-REMOVE-SINGLE_PLANNER-PATTERN1-GUARD-INSTRUCTIONS.md`
+- ねらい: Pattern1 guard を planner/facts 側 SSOT に一本化
+- 完了: single_planner の guard を削除し、fallback 側で同契約を維持
+- 検証: `cargo build --release` / `./tools/smokes/v2/run.sh --profile quick` / `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`