phase29ap(p12): remove joinir legacy loop table

docs/development/current/main/10-Now.md

@@ -3,7 +3,7 @@
 ## Current Focus
 
 - Phase: `docs/development/current/main/phases/phase-29ap/README.md`
-- Next: Phase 29ap P12 (planned; see `docs/development/current/main/phases/phase-29ap/README.md`)
+- Next: Phase 29ap P13 (planned; see `docs/development/current/main/phases/phase-29ap/README.md`)
 
 ## Gate (SSOT)
 

docs/development/current/main/30-Backlog.md

@@ -5,7 +5,7 @@ Scope: 「次にやる候補」を短く列挙するメモ。入口は `docs/dev
 
 ## Active
 
-- Phase 29ap: `docs/development/current/main/phases/phase-29ap/README.md` (Next: P12 planned)
+- Phase 29ap: `docs/development/current/main/phases/phase-29ap/README.md` (Next: P13 planned)
 - JoinIR regression gate SSOT: `docs/development/current/main/phases/phase-29ae/README.md`
 - CorePlan hardening (docs-first): `docs/development/current/main/phases/phase-29al/README.md`
 

docs/development/current/main/design/coreplan-migration-done-criteria-ssot.md

@@ -6,7 +6,7 @@ This document defines when the CorePlan migration can be considered done.
 
 - Release adopt gate patterns execute via CorePlan without strict/dev flags.
 - Gate smokes cover the release paths and remain green.
-- The legacy path remains only as a fallback for non-gate cases.
+- JoinIR legacy loop table is removed; routing is plan/composer only.
 
 ## Stage-3 Done (composer v0/v1)
 
@@ -17,5 +17,5 @@ This document defines when the CorePlan migration can be considered done.
 ## Still allowed to remain
 
 - `DomainPlan` can remain as an intent layer for normalization/compatibility.
-- Legacy extractors and router branches remain until Phase 29ap removes them.
-
+- Legacy extractors may remain in the plan layer as long as they do not reintroduce
+  JoinIR-side routing tables.

docs/development/current/main/design/coreplan-migration-roadmap-ssot.md

@@ -34,7 +34,7 @@ Related:
 ## 1.1 Current (active)
 
 - Active phase: `docs/development/current/main/phases/phase-29ap/README.md`
-- Next step: Phase 29ap P12 (planned)
+- Next step: Phase 29ap P13 (planned)
 
 ## 2. すでに固めた SSOT（再発防止の土台）
 

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

@@ -27,6 +27,7 @@ Goal: JoinIR の最小回帰セットを SSOT として固定する。
 - Pattern7 (release adopt, VM): `phase29ao_pattern7_release_adopt_vm`
 - Pattern7: `phase29ab_pattern7_*`
 - この pack が JoinIR 回帰の唯一の integration gate（phase143_* は対象外）
+- JoinIR routing is plan/composer SSOT only (legacy loop table removed in Phase 29ap P12)
 - phase143_* は LoopBuilder 撤去 / plugin disable 固定 / LLVM exe 期待が古いので除外
 - phase286_pattern9_* は plugins disabled 経路の mismatch があるため legacy pack 側で SKIP（phase29ae pack には含めない）
 - shadow adopt tag（`[coreplan/shadow_adopt:*]`）は `filter_noise` で除去される

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

@@ -128,6 +128,15 @@ Gate (SSOT):
   - No new logs/tags in release.
   - Gate stays green.
 
+## P12: Remove JoinIR legacy loop table ✅
+
+- Scope:
+  - Delete legacy loop table routing from JoinIR router.
+  - Remove legacy-only modules now that plan/composer is SSOT.
+- Guardrails:
+  - No change to logs or error strings.
+  - Gate stays green.
+
 ## Next (planned)
 
-- P12: Decide final removal of legacy nested loop entry (gate-first)
+- P13: Dead-code cleanup (warnings-only, no behavior change)