📚 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>

.github/workflows/pyvm-llvmlite-parity.yml

@@ -0,0 +1,55 @@
+name: PyVM ↔ llvmlite Parity (Optional)
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 6 * * *'
+
+jobs:
+  parity:
+    runs-on: ubuntu-latest
+    env:
+      CARGO_TERM_COLOR: always
+      NYASH_DISABLE_PLUGINS: '1'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Rust (stable)
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo registry and build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Install LLVM 18 (llvm-config-18)
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y curl ca-certificates lsb-release wget gnupg
+          curl -fsSL https://apt.llvm.org/llvm.sh -o llvm.sh
+          chmod +x llvm.sh
+          sudo ./llvm.sh 18
+          llvm-config-18 --version
+
+      - name: Build nyash (release)
+        run: cargo build --release -j 2
+
+      - name: Parity esc_dirname_smoke (PyVM vs llvmlite)
+        run: tools/parity.sh --lhs pyvm --rhs llvmlite apps/tests/esc_dirname_smoke.nyash --timeout 20
+
+      - name: Parity string_ops_basic (PyVM vs llvmlite)
+        run: tools/parity.sh --lhs pyvm --rhs llvmlite apps/tests/string_ops_basic.nyash --timeout 20
+
+      - name: Parity ternary_nested (PyVM vs llvmlite)
+        run: tools/parity.sh --lhs pyvm --rhs llvmlite apps/tests/ternary_nested.nyash --timeout 20
+
+      - name: Parity peek_return_value (PyVM vs llvmlite)
+        run: tools/parity.sh --lhs pyvm --rhs llvmlite apps/tests/peek_return_value.nyash --timeout 20
+

.github/workflows/pyvm-smoke.yml

@@ -0,0 +1,83 @@
+name: PyVM + Using Smoke
+
+on:
+  push:
+    paths:
+      - 'src/**'
+      - 'apps/**'
+      - 'tools/**'
+      - 'docs/**'
+      - 'Cargo.toml'
+      - 'Cargo.lock'
+      - '.github/workflows/pyvm-smoke.yml'
+  pull_request:
+    paths:
+      - 'src/**'
+      - 'apps/**'
+      - 'tools/**'
+      - 'docs/**'
+
+jobs:
+  pyvm-smokes:
+    runs-on: ubuntu-latest
+    env:
+      CARGO_TERM_COLOR: always
+      NYASH_DISABLE_PLUGINS: '1'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Rust (stable)
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Install ripgrep
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y ripgrep
+
+      - name: Cache cargo registry and build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+
+      - name: Build (release)
+        run: cargo build --release -j 2
+
+      - name: PyVM Stage-2 smokes
+        run: bash tools/pyvm_stage2_smoke.sh
+
+      - name: PyVM nested control smokes
+        run: bash tools/pyvm_stage2_nested_control_smoke.sh
+
+      - name: PyVM call/args smokes
+        run: bash tools/pyvm_stage2_call_args_smoke.sh
+
+      - name: Bridge Stage-2 (parser MVP) smokes
+        run: bash tools/ny_stage2_bridge_smoke.sh
+
+      - name: PyVM collections smokes
+        run: bash tools/pyvm_collections_smoke.sh
+
+      - name: PyVM compare smokes
+        run: bash tools/pyvm_stage2_compare_smoke.sh
+
+      - name: Bridge Stage-2 short-circuit smoke
+        run: bash tools/ny_stage2_shortcircuit_smoke.sh
+
+      - name: PyVM Stage-2 dot-chain smoke
+        run: bash tools/pyvm_stage2_dot_chain_smoke.sh
+
+      - name: PyVM Stage-2 new/method smoke
+        run: bash tools/ny_stage2_new_method_smoke.sh
+
+      - name: Selfhost using acceptance (no-op)
+        run: bash tools/ny_selfhost_using_smoke.sh
+
+      - name: Emitter meta.usings gate (fallback allowed)
+        run: bash tools/selfhost_emitter_usings_gate_smoke.sh