📚 Phase 15 - セルフホスティング戦略の明確化とEXE-first実装

## 主な変更点

### 🎯 戦略の転換と明確化
- PyVMを開発ツールとして位置づけ（本番経路ではない）
- EXE-first戦略を明確に優先（build_compiler_exe.sh実装済み）
- Phase順序の整理: 15.2(LLVM)→15.3(コンパイラ)→15.4(VM)

### 🚀 セルフホスティング基盤の実装
- apps/selfhost-compiler/にNyashコンパイラMVP実装
  - compiler.nyash: メインエントリー（位置引数対応）
  - boxes/: parser_box, emitter_box, debug_box分離
- tools/build_compiler_exe.sh: ネイティブEXEビルド＋dist配布
- Python MVPパーサーStage-2完成（local/if/loop/call/method/new）

### 📝 ドキュメント整備
- Phase 15 README/ROADMAP更新（Self-Hosting優先明記）
- docs/guides/exe-first-wsl.md: WSLクイックスタート追加
- docs/private/papers/: 論文G～L、爆速事件簿41事例収録

### 🔧 技術的改善
- JSON v0 Bridge: If/Loop PHI生成実装（ChatGPT協力）
- PyVM/llvmliteパリティ検証スイート追加
- using/namespace機能（gated実装、Phase 15では非解決）

## 次のステップ
1. パーサー無限ループ修正（未実装関数の実装）
2. EXEビルドとセルフホスティング実証
3. c0→c1→c1'ブートストラップループ確立

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

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

docs/issues/parser_unary_asi_alignment.md

@@ -0,0 +1,26 @@
+# Parser/Bridge: Unary and ASI Alignment (Stage‑2)
+
+Context
+- Rust parser already parses unary minus with higher precedence (parse_unary → factor → term) but PyVM pipe path did not reflect unary when emitting MIR JSON for the PyVM harness.
+- Bridge（JSON v0 path）is correct for unary by transforming to `0 - expr` in the Python MVP, but Rust→PyVM path uses `emit_mir_json_for_harness` which skipped `UnaryOp`.
+- ASI in arguments split over newlines is not yet supported in Rust (e.g., newline inside `(..., ...)` after a comma in a chained call), while Bridge/Selfhost cover ASI for statements and operators.
+
+Proposed minimal steps
+- Unary for PyVM harness:
+  - Option A (preferred later): extend `emit_mir_json_for_harness[_bin]` to export a `unop` instruction and add PyVM support. Requires schema change.
+  - Option B (quick): legalize unary `Neg` to `Const(0); BinOp('-', 0, v)` before emitting, by inserting a synthetic temporary. This requires value id minting in emitter to remain self‑consistent, which we currently do not have. So Option B is non‑trivial without changing emitter capabilities.
+  - Decision: keep Bridge JSON v0 path authoritative for unary tests; avoid relying on Rust→PyVM for unary until we add a `unop` schema.
+
+- ASI inside call arguments (multi‑line):
+  - Keep as NOT SUPPORTED for Rust parser in Phase‑15. Use single‑line args in tests.
+  - Selfhost/Bridge side already tolerate semicolons optionally after statements; operator‑continuation is supported in Bridge MVP.
+
+Tracking
+- If we want to support unary in the PyVM harness emitter:
+  - Add `unop` to tools/pyvm_runner.py and src/llvm_py/pyvm/vm.py (accept `{op:"unop", kind:"neg", src: vid, dst: vid}`)
+  - Teach emitters to export `UnaryOp` accordingly (`emit_mir_json_for_harness[_bin]`).
+
+Status
+- Bridge unary: OK（ny_stage2_bridge_smoke includes unary）
+- Rust→PyVM unary: not supported in emitter; will stay out of CI until schema update
+- ASI in args over newline: not supported by Rust parser; keep tests single‑line for now