phase29ag(p1): remap via boundary.join_inputs

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

@@ -2,7 +2,10 @@
 
 ## Current Focus: Phase 29ag（JoinIR merge SSOT unification）
 
-Next: `docs/development/current/main/phases/phase-29ag/P0-COORDINATOR-USES-BOUNDARY-CARRIER-LAYOUT-INSTRUCTIONS.md`
+**2025-12-29: Phase 29ag P1 完了** ✅
+- 目的: coordinator の ValueId(idx) 前提を撤去し、boundary.join_inputs を SSOT 化（仕様不変）
+- 入口: `docs/development/current/main/phases/phase-29ag/README.md`
+- 検証: `cargo build --release` / `./tools/smokes/v2/run.sh --profile quick` / `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh` PASS
 
 **2025-12-29: Phase 29af P5 完了** ✅
 - 目的: 29af を closeout して JoinIR 回帰確認を 1 本に収束（仕様不変）

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

@@ -11,7 +11,7 @@ Related:
 - **Phase 29af（✅ COMPLETE）: Boundary hygiene / regression entrypoint / carrier layout SSOT**
   - 入口: `docs/development/current/main/phases/phase-29af/README.md`
 
-- **Phase 29ag（candidate）: JoinIR merge の追加安定化**
+- **Phase 29ag（✅ COMPLETE）: JoinIR merge SSOT unification**
   - 入口: `docs/development/current/main/phases/phase-29ag/README.md`
 
 - **Phase 29ae P1（✅ COMPLETE）: JoinIR Regression Pack (SSOT固定)**

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

@@ -2,6 +2,11 @@
 
 Goal: Phase 29af で固めた boundary/layout/contract を前提に、merge 内の order SSOT をさらに一箇所へ寄せて回帰余地を減らす（仕様不変）。
 
+## Status
+
+- P0: ✅ COMPLETE
+- P1: ✅ COMPLETE
+
 ## Why now
 
 - Phase 29af で carrier order SSOT（`BoundaryCarrierLayout`）と整合契約（P4）まで揃った
@@ -9,10 +14,12 @@ Goal: Phase 29af で固めた boundary/layout/contract を前提に、merge 内
 
 ## P0: Coordinator param remap uses BoundaryCarrierLayout
 
+- ✅ COMPLETE
 - 指示書: `docs/development/current/main/phases/phase-29ag/P0-COORDINATOR-USES-BOUNDARY-CARRIER-LAYOUT-INSTRUCTIONS.md`
 
 ## P1: Eliminate ValueId(i) fallback; remap via boundary.join_inputs
 
+- ✅ COMPLETE
 - 指示書: `docs/development/current/main/phases/phase-29ag/P1-COORDINATOR-REMAPPERS-USE-JOIN_INPUTS-INSTRUCTIONS.md`
 
 ## Verification (SSOT)