test: Phase 114 if-only return+post parity (VM + LLVM EXE)

Phase 114 validates that if-only lowering correctly handles cases with:
- Early return in the if-only branch
- Post-if statements that execute on the else path
- Different return values from each path

Fixture: apps/tests/phase114_if_only_return_then_post_min.hako
- Expected output: 7\n2
- f(1): condition true → early return 7
- f(0): condition false → x=1+1=2, return 2

Testing:
- VM backend: phase114_if_only_return_then_post_vm.sh ✅
- LLVM EXE backend: phase114_if_only_return_then_post_llvm_exe.sh ✅
- Regression: Phase 103/113 maintained ✅

Implementation: No new code required - validates existing if-only
exit line routing and post-if statement processing.

Documentation:
- docs/development/current/main/phases/phase-114/README.md
- Updated: 10-Now.md, 01-JoinIR-Selfhost-INDEX.md

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

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

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

@@ -1,5 +1,14 @@
 # Self Current Task — Now (main)
 
+## 2025-12-18：Phase 114 完了 ✅
+
+**Phase 114: if-only return+post parity**
+- if-only で early return + post-if statements パターンを VM/LLVM で固定
+- Fixture: phase114_if_only_return_then_post_min.hako (expected: 7, 2)
+- Smoke: VM + LLVM EXE parity 検証済み
+- 回帰: Phase 103/113 維持確認
+- 入口: `docs/development/current/main/phases/phase-114/README.md`
+
 ## 2025-12-18：Phase 113 完了 ✅
 
 **Phase 113: if-only partial assign parity**