docs: Phase 132 DONE - loop(true) + post-loop complete

Update documentation to mark Phase 132 as complete:

**10-Now.md**:
- Add Phase 132 completion entry (P0/P0.5/P1/R0)
- Document what was solved:
  - loop(true) + post VM/LLVM EXE parity (exit code 3)
  - Continuation contracts SSOT化
  - merge が by-name 推測禁止
- Entry link: docs/development/current/main/phases/phase-132/README.md

**phase-132/README.md**:
- Update Status: IN PROGRESS → DONE ✅
- Add Current Status section with P0/P0.5/P1/R0 completion details
- Document SSOT achievements:
  - JoinInlineBoundary::default_continuations()
  - src/mir/builder/control_flow/joinir/merge/README.md (merge contracts)
  - src/mir/builder/control_flow/joinir/legacy/README.md (removal conditions)
- Test placement: continuation_contract.rs
- Test results: All Phase 131/132/97 smokes PASS

Phase 132 Summary:
- P0: post_k generation (loop_true_break_once.rs extension)
- P0.5: Suffix router for StepTree (post statements visibility fix)
- P1: k_exit continuation classification fix (structural check)
- R0: Infrastructure refactoring (SSOT + legacy isolation + docs)

Key achievements:
- VM/LLVM EXE parity for loop(true) + post-loop
- Continuation contracts SSOT and documented
- Legacy code path isolated for future removal
- Code quality improved (warnings reduced)

Related: Phase 132 loop(true) + post-loop complete implementation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

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

@@ -35,6 +35,29 @@
 - Unit tests: 1155/1155 PASS
 - 入口: `docs/development/current/main/phases/phase-129/README.md`
 
+## 2025-12-18：Phase 132 完了 ✅
+
+**Phase 132: loop(true) break-once + post-loop minimal（dev-only）**
+- 目的: Phase 131 を拡張し、ループ後の最小 post 計算まで Normalized shadow で固定（PHI-free 維持）
+- 仕様:
+  - `loop(true) { x = 1; break }; x = x + 2; return x` は exit code `3`（VM/LLVM EXE parity）
+  - post_k continuation で post-loop statements を処理
+- 実装:
+  - **P0**: post_k 生成（loop_true_break_once.rs 拡張）
+  - **P0.5**: StepTree が post-loop statements を保持（suffix router box 追加）
+  - **P1**: k_exit continuation 分類修正（構造ベースの判定）
+  - **R0**: Continuation SSOT 一本化 + legacy 隔離 + docs 整備
+- SSOT:
+  - `JoinInlineBoundary::default_continuations()` - continuation ID の集約
+  - `src/mir/builder/control_flow/joinir/merge/README.md` - merge 契約明文化
+  - `src/mir/builder/control_flow/joinir/legacy/README.md` - legacy 撤去条件
+- テスト配置: `src/mir/builder/control_flow/joinir/merge/tests/continuation_contract.rs`
+- 検証:
+  - `bash tools/smokes/v2/profiles/integration/apps/phase132_loop_true_break_once_post_add_vm.sh`
+  - `bash tools/smokes/v2/profiles/integration/apps/phase132_loop_true_break_once_post_add_llvm_exe.sh`
+- 回帰: Phase 131/97 維持確認（全 PASS）
+- 入口: `docs/development/current/main/phases/phase-132/README.md`
+
 ## 2025-12-18：Phase 131 P2 完了 ✅
 
 **Phase 131: loop(true) break-once Normalized（dev-only）**