phase29aj(p1): remove legacy_rules via plan extractors

docs/development/current/main/phases/phase-29aj/P1-REMOVE-LEGACY-RULES-INSTRUCTIONS.md

@@ -0,0 +1,59 @@
+# Phase 29aj P1: Remove single_planner legacy_rules (Plan extractor SSOT)
+
+Date: 2025-12-29  
+Status: Ready for execution  
+Scope: plan extractor ownership + single_planner cleanup（仕様不変）  
+Goal: plan 層が抽出 SSOT を持ち、single_planner が JoinIR 依存を持たない
+
+## Objective
+
+- single_planner の legacy_rules を撤去し、plan/extractors を直接参照する
+- Pattern1/3/4/5/8/9 の抽出実装を plan 層へ移し、JoinIR 側は wrapper のみ
+- 既定挙動・エラー文字列は不変（抽出実装は移設のみ）
+
+## Implementation Steps
+
+### Step 1: plan/extractors へ移設（SSOT 化）
+
+Files:
+- `src/mir/builder/control_flow/plan/extractors/pattern1.rs`
+- `src/mir/builder/control_flow/plan/extractors/pattern3.rs`
+- `src/mir/builder/control_flow/plan/extractors/pattern4.rs`
+- `src/mir/builder/control_flow/plan/extractors/pattern5.rs`
+- `src/mir/builder/control_flow/plan/extractors/pattern8.rs`
+- `src/mir/builder/control_flow/plan/extractors/pattern9.rs`
+
+やること:
+- JoinIR 側の実装を plan 層へ移動
+- `plan/extractors/mod.rs` に module 登録
+
+### Step 2: JoinIR 側は wrapper のみに縮退
+
+Files:
+- `src/mir/builder/control_flow/joinir/patterns/extractors/pattern{1,3,4,5,8,9}.rs`
+
+やること:
+- `pub(crate) use crate::mir::builder::control_flow::plan::extractors::patternX::*;`
+
+### Step 3: single_planner の legacy_rules 撤去
+
+Files:
+- `src/mir/builder/control_flow/plan/single_planner/mod.rs`
+- `src/mir/builder/control_flow/plan/single_planner/rules.rs`
+- `src/mir/builder/control_flow/plan/single_planner/legacy_rules/*`（削除）
+
+やること:
+- RuleKind::Simple を `(condition, body)` 署名に変更
+- plan/extractors を直接参照
+- Pattern2/6/7 の fallback も plan/extractors へ直結
+
+## Acceptance Criteria
+
+- `cargo build --release`
+- `./tools/smokes/v2/run.sh --profile quick`
+- `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
+- single_planner に `legacy_rules` 参照が残っていない
+
+## Commit
+
+- `git add -A && git commit -m "phase29aj(p1): remove legacy_rules via plan extractors"`

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

@@ -9,6 +9,13 @@ Goal: planner の facts/plan を 1 本の outcome に集約し、観測の SSOT
 - 完了: build_plan_with_facts を追加し、single_planner のタグ出力は outcome.facts 参照に収束
 - 検証: `cargo build --release` / `./tools/smokes/v2/run.sh --profile quick` / `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
 
+## P1: Remove single_planner legacy_rules（Plan extractor SSOT）
+
+- 指示書: `docs/development/current/main/phases/phase-29aj/P1-REMOVE-LEGACY-RULES-INSTRUCTIONS.md`
+- ねらい: plan 層に extractor を集約し、single_planner の JoinIR 依存を撤去
+- 完了: Pattern1/3/4/5/8/9 を plan/extractors へ移設、legacy_rules を削除
+- 検証: `cargo build --release` / `./tools/smokes/v2/run.sh --profile quick` / `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
+
 ## Verification (SSOT)
 
 - `cargo build --release`