docs: update normalized_shadow references and Phase 129 status

docs/development/current/main/phases/phase-121/README.md

@@ -154,10 +154,10 @@ Phase 121 is complete. Future work:
 
 ## Known Limitations
 
-- **Stub implementation**: Returns empty JoinModule (contract check only)
+- **Phase 121 scope**: contract parity（exits/writes）までを固定（値の一致や JoinModule の実行は対象外）
 - **If-only scope**: Loops/breaks/continues rejected
 - **No value comparison**: Only contracts compared (exits/writes)
-- **LLVM test incomplete**: Harness configuration needed (VM tests validate core)
+- **JoinModule emission**: Phase 122+ で段階的に追加（Phase 121 自体は parity の足場）
 
 ## Files Modified
 
@@ -165,7 +165,7 @@ Phase 121 is complete. Future work:
 - `src/mir/control_tree/normalized_shadow/mod.rs`
 - `src/mir/control_tree/normalized_shadow/contracts.rs`
 - `src/mir/control_tree/normalized_shadow/builder.rs`
-- `src/mir/control_tree/normalized_shadow/parity.rs`
+- `src/mir/control_tree/normalized_shadow/parity_contract.rs`
 - `tools/smokes/v2/profiles/integration/apps/phase121_shadow_if_only_vm.sh`
 - `tools/smokes/v2/profiles/integration/apps/phase121_shadow_if_only_llvm_exe.sh`
 

docs/development/current/main/phases/phase-122/README.md

@@ -60,7 +60,7 @@
 ✅ **完了** - commit \`cc1a0946b\`（P2-P3 統合）
 
 **変更**:
-- \`src/mir/control_tree/normalized_shadow/parity.rs\`
+- \`src/mir/control_tree/normalized_shadow/normalized_verifier.rs\`
   - \`verify_normalized_structure()\` 追加
 - \`src/mir/builder/calls/lowering.rs\`
   - Phase 122 検証呼び出し追加

docs/development/current/main/phases/phase-129/README.md

@@ -79,7 +79,7 @@ join_k(env_phi):
 
 ## Implementation Plan
 
-### P0: LLVM EXE smoke for Phase 128 ✅
+### P0: LLVM EXE parity baseline (Phase 128) ✅
 
 - Add `phase128_if_only_partial_assign_normalized_llvm_exe.sh`
 - Verify VM+LLVM parity for Phase 128 baseline
@@ -87,29 +87,21 @@ join_k(env_phi):
 
 **Status**: DONE (commit e7ad3d31b)
 
-### P1: Materialize join_k Continuation
+### P1-B: Materialize join_k (if-as-last) ✅
 
-**Target**: `src/mir/control_tree/normalized_shadow/builder.rs`
+**Target**:
+- `src/mir/control_tree/normalized_shadow/if_as_last_join_k.rs`
+- orchestrator: `src/mir/control_tree/normalized_shadow/builder.rs`
+- structure verification: `src/mir/control_tree/normalized_shadow/normalized_verifier.rs`
+- contract parity: `src/mir/control_tree/normalized_shadow/parity_contract.rs`
 
-**Changes**:
-1. **lower_if_node**: Generate join_k function
-   - Create JoinFunction with env parameter
-   - then: `TailCall(join_k, env_then)`
-   - else: `TailCall(join_k, env_else)`
-   - join_k body: process post-if statements
+**What is supported**:
+- if-only, and the `if` is the last statement (Phase 129-B)
+- then/else: TailCall(join_k) with env argument (PHI禁止)
 
-2. **verify_normalized_structure**: Add join_k checks
-   - If exists → join_k exists (by name or structure)
-   - then/else end with TailCall (not Ret)
-   - join_k has params (env fields)
-   - No PHI instructions anywhere
+**Status**: DONE (Phase 129-B: fixture + VM smoke PASS)
 
-**Acceptance**:
-- `cargo test --lib` PASS
-- Phase 128 VM smoke PASS
-- Phase 129 LLVM EXE smoke PASS (new fixture)
-
-### P2: Post-If Return Var Fixture
+### P2: Post-if support (return-var) 🔜
 
 **New fixture**: `apps/tests/phase129_if_only_post_if_return_var_min.hako`
 ```hako
@@ -122,9 +114,9 @@ x=1; flag=1; if flag==1 { x=2 }; print(x); return "OK"
 - `NYASH_JOINIR_DEV=1 HAKO_JOINIR_STRICT=1`
 - Verify join_k continuation works
 
-**Acceptance**:
-- VM smoke PASS
-- join_k actually used (not fallback path)
+**Status**:
+- Fixture + VM smoke exist.
+- Not yet guaranteed to run through Normalized join_k path (can still fall back).
 
 ### P3: Documentation
 
@@ -136,7 +128,8 @@ x=1; flag=1; if flag==1 { x=2 }; print(x); return "OK"
 - ✅ P0: Phase 128 LLVM EXE smoke passes
 - ✅ P1-B: join_k materialized for if-as-last (then/else tail-call join_k)
 - ✅ P1-B: verify_normalized_structure enforces join_k tailcall + PHI禁止
-- [ ] P2: Phase 129 fixture + VM smoke passes
+- ✅ P2 (setup): fixture + VM smoke exist
+- [ ] P2 (behavior): post-if path runs via Normalized (no fallback)
 - [ ] P3: Documentation updated
 - [ ] Regression: phase103, phase118, phase128 all PASS
 - [ ] `cargo test --lib` PASS
@@ -147,10 +140,10 @@ x=1; flag=1; if flag==1 { x=2 }; print(x); return "OK"
 # Unit tests
 cargo test --lib
 
-# Smoke tests
+# Smoke tests (baseline)
 bash tools/smokes/v2/profiles/integration/apps/phase128_if_only_partial_assign_normalized_vm.sh
 bash tools/smokes/v2/profiles/integration/apps/phase128_if_only_partial_assign_normalized_llvm_exe.sh
-bash tools/smokes/v2/profiles/integration/apps/phase129_if_only_post_if_return_var_vm.sh
+bash tools/smokes/v2/profiles/integration/apps/phase129_join_k_as_last_vm.sh
 
 # Regression
 bash tools/smokes/v2/profiles/integration/apps/phase103_if_only_llvm_exe.sh