diff --git a/.github/workflows/box_first_guard.yml b/.github/workflows/box_first_guard.yml
deleted file mode 100644
index fe683431..00000000
--- a/.github/workflows/box_first_guard.yml
+++ /dev/null
@@ -1,63 +0,0 @@
-name: Box-First Guard (Advisory)
-
-on:
-  pull_request:
-  push:
-
-jobs:
-  advisory-guards:
-    name: Advisory Box-First Checks
-    runs-on: ubuntu-latest
-    continue-on-error: true  # informational for now
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install ripgrep
-        run: sudo apt-get update && sudo apt-get install -y ripgrep
-
-      - name: Disallow direct env reads in jit (except config/runtime)
-        run: |
-          set -e
-          echo "Checking for std::env::var direct reads under src/jit (excluding config.rs and rt.rs)"
-          # find occurrences outside config.rs and rt.rs
-          if rg -n "std::env::var\(" src/jit | rg -v 'src/jit/(config|rt)\.rs'; then
-            echo "[GUARD] Found direct env reads outside jit::config/rt (advisory)."
-            exit 1
-          else
-            echo "[OK] No direct env reads outside jit::config/rt"
-          fi
-
-      - name: Report direct env reads (global advisory)
-        run: |
-          echo "[ADVISORY] Listing direct std::env::var reads outside config aggregators..."
-          rg -n "std::env::var\(" src \
-            | rg -v 'src/jit/config\.rs|src/config/env\.rs' \
-            || true
-          echo "[NOTE] Above is advisory; prefer using config::env or jit::config for critical flags."
-
-      - name: Prevent reintroducing removed modular builder feature (advisory)
-        run: |
-          set -e
-          if rg -n "mir_modular_builder" Cargo.toml src || true; then
-            echo "[GUARD] Found 'mir_modular_builder' mention (advisory). This feature was removed."
-            exit 1
-          else
-            echo "[OK] No 'mir_modular_builder' mentions found"
-          fi
-
-      - name: Enforce single B1 ABI switch point (advisory)
-        run: |
-          set -e
-          echo "Checking unexpected B1 mentions"
-          # allow occurrences in known switch points
-          if rg -n "B1" src | rg -v 'abi_param_for_kind|returns.*types::B1|jit-b1-abi'; then
-            echo "[GUARD] Found unexpected B1 usage (advisory)."
-            exit 1
-          else
-            echo "[OK] No unexpected B1 usage"
-          fi
-
-      - name: Print reminder for stats.jsonl (advisory)
-        run: |
-          echo "[NOTE] Consider emitting stats.jsonl with {function, abi_mode, reason} at least once per run."
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index c973afcf..00000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,51 +0,0 @@
-name: nyash-ci
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  build-and-smoke:
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install LLVM 18 (apt.llvm.org)
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y wget gnupg lsb-release
-          wget https://apt.llvm.org/llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 18
-
-      - name: Set LLVM env
-        run: echo "LLVM_SYS_180_PREFIX=$(llvm-config-18 --prefix)" >> "$GITHUB_ENV"
-
-      - name: Ensure Python3
-        run: sudo apt-get install -y python3
-
-      - name: Set up Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache Rust build
-        uses: Swatinem/rust-cache@v2
-        with:
-          cache-targets: true
-
-      - name: Build (LLVM feature)
-        run: cargo build --release --features llvm
-
-      - name: Curated LLVM smokes
-        run: ./tools/smokes/curated_llvm.sh
-
-      - name: Curated LLVM Stage-3 smokes
-        run: ./tools/smokes/curated_llvm_stage3.sh
-
-      - name: Bridge Stage-3 acceptance (JSON v0 pipe)
-        run: ./tools/ny_stage3_bridge_accept_smoke.sh
-
-      - name: Curated LLVM Stage-3 smokes (PHI-off)
-        run: ./tools/smokes/curated_llvm_stage3.sh --phi-off
-
diff --git a/.github/workflows/core13-pure-llvm.yml b/.github/workflows/core13-pure-llvm.yml
deleted file mode 100644
index ea388e0d..00000000
--- a/.github/workflows/core13-pure-llvm.yml
+++ /dev/null
@@ -1,36 +0,0 @@
-name: Core-13 Pure CI (LLVM)
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  test-core13-pure-llvm:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache cargo
-        uses: Swatinem/rust-cache@v2
-
-      - 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: Run tests with Core-13 pure mode + LLVM
-        env:
-          NYASH_MIR_CORE13_PURE: "1"
-        run: |
-          export LLVM_SYS_180_PREFIX="$(llvm-config-18 --prefix)"
-          export LLVM_SYS_181_PREFIX="$(llvm-config-18 --prefix)"
-          cargo test --features llvm --all-targets --no-fail-fast
-
diff --git a/.github/workflows/core13-pure.yml b/.github/workflows/core13-pure.yml
deleted file mode 100644
index 2d72dfe4..00000000
--- a/.github/workflows/core13-pure.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-name: Core-13 Pure CI
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  test-core13-pure:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache cargo
-        uses: Swatinem/rust-cache@v2
-
-      - name: Build (release)
-        run: cargo build --release
-
-      - name: Run tests with Core-13 pure mode
-        env:
-          NYASH_MIR_CORE13_PURE: "1"
-        run: cargo test --all-targets --no-fail-fast
-
diff --git a/.github/workflows/docs-link-check.yml b/.github/workflows/docs-link-check.yml
deleted file mode 100644
index f3b235a1..00000000
--- a/.github/workflows/docs-link-check.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: docs-link-check
-
-on:
-  push:
-    paths:
-      - '**.md'
-      - '.github/workflows/docs-link-check.yml'
-      - '.github/mlc_config.json'
-  pull_request:
-    paths:
-      - '**.md'
-      - '.github/workflows/docs-link-check.yml'
-      - '.github/mlc_config.json'
-
-jobs:
-  markdown-link-check:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Run markdown-link-check on docs and READMEs
-        uses: gaurav-nelson/github-action-markdown-link-check@v1
-        with:
-          use-quiet-mode: 'yes'
-          use-verbose-mode: 'no'
-          config-file: '.github/mlc_config.json'
-          folder-path: |
-            docs
-          file-path: |
-            README.md
-            README.ja.md
-            CLAUDE.md
-
diff --git a/.github/workflows/llvm-aot-smoke.yml b/.github/workflows/llvm-aot-smoke.yml
deleted file mode 100644
index 78ad195c..00000000
--- a/.github/workflows/llvm-aot-smoke.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-name: LLVM AOT Smoke
-
-on:
-  push:
-    paths:
-      - 'src/**'
-      - 'crates/**'
-      - 'apps/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-      - '.github/workflows/llvm-aot-smoke.yml'
-  pull_request:
-    paths:
-      - 'src/**'
-      - 'crates/**'
-      - 'apps/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-
-jobs:
-  llvm-aot:
-    runs-on: ubuntu-latest
-    env:
-      CARGO_TERM_COLOR: always
-      NYASH_CLI_VERBOSE: '1'
-      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: Run LLVM AOT smokes
-        run: bash tools/llvm_smoke.sh
-
diff --git a/.github/workflows/llvm-ny-llvmc-exe.yml b/.github/workflows/llvm-ny-llvmc-exe.yml
deleted file mode 100644
index fee953e0..00000000
--- a/.github/workflows/llvm-ny-llvmc-exe.yml
+++ /dev/null
@@ -1,61 +0,0 @@
-name: llvm-ny-llvmc-exe
-
-on:
-  push:
-    branches: [ main, master, "**" ]
-  pull_request:
-    branches: [ "**" ]
-
-jobs:
-  ny-llvmc-exe:
-    runs-on: ubuntu-latest
-    timeout-minutes: 25
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Rust (stable)
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache cargo
-        uses: Swatinem/rust-cache@v2
-
-      - name: Install LLVM 18 and Python deps
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y curl ca-certificates lsb-release wget gnupg python3-pip
-          curl -fsSL https://apt.llvm.org/llvm.sh -o llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 18
-          llvm-config-18 --version
-          python3 -m pip install --upgrade pip
-          python3 -m pip install llvmlite jsonschema
-
-      - name: Build nyash and ny-llvmc (release)
-        run: |
-          cargo build --release -j 2
-          cargo build --release -p nyash-llvm-compiler -j 2
-          cargo build --release -p nyrt -j 2
-
-      - name: EXE build+run (ternary_basic -> exit 10)
-        run: |
-          mkdir -p tmp
-          ./target/release/nyash --emit-mir-json tmp/tb.json --backend mir apps/tests/ternary_basic.nyash
-          ./target/release/ny-llvmc --in tmp/tb.json --emit exe --nyrt target/release --out tmp/tb
-          set +e; ./tmp/tb >/dev/null 2>&1; CODE=$?; set -e
-          echo "exit=$CODE"; test "$CODE" -eq 10
-
-      - name: EXE build+run (ternary_nested -> exit 50)
-        run: |
-          ./target/release/nyash --emit-mir-json tmp/tn.json --backend mir apps/tests/ternary_nested.nyash
-          ./target/release/ny-llvmc --in tmp/tn.json --emit exe --nyrt target/release --out tmp/tn
-          set +e; ./tmp/tn >/dev/null 2>&1; CODE=$?; set -e
-          echo "exit=$CODE"; test "$CODE" -eq 50
-
-      - name: EXE build+run (peek_expr_block -> exit 1)
-        run: |
-          ./target/release/nyash --emit-mir-json tmp/pb.json --backend mir apps/tests/peek_expr_block.nyash
-          ./target/release/ny-llvmc --in tmp/pb.json --emit exe --nyrt target/release --out tmp/pb
-          set +e; ./tmp/pb >/dev/null 2>&1; CODE=$?; set -e
-          echo "exit=$CODE"; test "$CODE" -eq 1
-
diff --git a/.github/workflows/llvm-ny-llvmc-obj.yml b/.github/workflows/llvm-ny-llvmc-obj.yml
deleted file mode 100644
index 57a11d9f..00000000
--- a/.github/workflows/llvm-ny-llvmc-obj.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-name: llvm-ny-llvmc-obj
-
-on:
-  push:
-    branches: [ main, master, "**" ]
-  pull_request:
-    branches: [ "**" ]
-
-jobs:
-  ny-llvmc-obj:
-    runs-on: ubuntu-latest
-    timeout-minutes: 25
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Rust (stable)
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache cargo
-        uses: Swatinem/rust-cache@v2
-
-      - name: Install LLVM 18 and Python deps
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y curl ca-certificates lsb-release wget gnupg python3-pip
-          curl -fsSL https://apt.llvm.org/llvm.sh -o llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 18
-          llvm-config-18 --version
-          python3 -m pip install --upgrade pip
-          python3 -m pip install llvmlite
-
-      - name: Build nyash (release)
-        run: cargo build --release -j 2
-
-      - name: Generate object via ny-llvmc (crate path)
-        env:
-          NYASH_LLVM_COMPILER: crate
-          NYASH_LLVM_ONLY_OBJ: "1"
-        run: |
-          bash tools/build_llvm.sh apps/tests/hello_simple_llvm.nyash -o app
-          ls -la target/aot_objects
-          test -f target/aot_objects/hello_simple_llvm.o
-
-      - name: Print object file type
-        run: |
-          file target/aot_objects/hello_simple_llvm.o || true
-
diff --git a/.github/workflows/llvm-vinvoke-smoke.yml b/.github/workflows/llvm-vinvoke-smoke.yml
deleted file mode 100644
index a2755b7f..00000000
--- a/.github/workflows/llvm-vinvoke-smoke.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-name: LLVM VInvoke Smoke
-
-on:
-  push:
-    paths:
-      - 'src/**'
-      - 'crates/**'
-      - 'apps/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-      - '.github/workflows/llvm-vinvoke-smoke.yml'
-  pull_request:
-    paths:
-      - 'src/**'
-      - 'crates/**'
-      - 'apps/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-
-jobs:
-  llvm-vinvoke:
-    runs-on: ubuntu-latest
-    env:
-      CARGO_TERM_COLOR: always
-      NYASH_CLI_VERBOSE: '1'
-      # Plugins enabled (do not set NYASH_DISABLE_PLUGINS)
-    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 build-essential libzstd-dev
-          curl -fsSL https://apt.llvm.org/llvm.sh -o llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 18
-          llvm-config-18 --version
-
-      - name: Run LLVM VInvoke + Array smoke tests
-        run: |
-          NYASH_LLVM_VINVOKE_RET_SMOKE=1 NYASH_LLVM_ARRAY_RET_SMOKE=1 ./tools/llvm_smoke.sh release
diff --git a/.github/workflows/mir-golden-ci.yml b/.github/workflows/mir-golden-ci.yml
deleted file mode 100644
index f673bd63..00000000
--- a/.github/workflows/mir-golden-ci.yml
+++ /dev/null
@@ -1,28 +0,0 @@
-name: MIR Golden CI
-
-on:
-  push:
-  pull_request:
-
-jobs:
-  build-and-compare:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Install Rust (stable)
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache cargo
-        uses: Swatinem/rust-cache@v2
-
-      - name: Build (release)
-        run: cargo build --release
-
-      - name: Make tools executable
-        run: chmod +x tools/*.sh
-
-      - name: Compare MIR against golden snapshots
-        run: bash tools/ci_check_golden.sh
-
diff --git a/.github/workflows/nekocode-pr-analysis.yml b/.github/workflows/nekocode-pr-analysis.yml
deleted file mode 100644
index 358955b9..00000000
--- a/.github/workflows/nekocode-pr-analysis.yml
+++ /dev/null
@@ -1,115 +0,0 @@
-name: NekoCode PR Impact Analysis
-
-on:
-  pull_request:
-    types: [opened, synchronize, reopened]
-    branches: [main, dev]
-
-jobs:
-  nekocode-analysis:
-    runs-on: ubuntu-latest
-    name: Code Impact Analysis
-    
-    permissions:
-      contents: read
-      pull-requests: write
-
-    steps:
-      - name: Checkout PR
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-          
-      - name: Download NekoCode
-        run: |
-          mkdir -p bin
-          curl -L https://github.com/moe-charm/nekocode-rust/raw/main/releases/nekocode-rust -o bin/nekocode-rust
-          chmod +x bin/nekocode-rust
-
-      - name: Analyze Current PR
-        id: analyze-pr
-        run: |
-          echo "🔍 Analyzing PR changes..."
-          
-          # 🎯 修正1: パスを. (ルート)に変更
-          ./bin/nekocode-rust analyze . --stats-only > pr_analysis.txt 2>&1
-          
-          # 🎯 修正2: エラー処理を改善
-          if [ $? -ne 0 ]; then
-            echo "❌ NekoCode analysis failed!"
-            cat pr_analysis.txt
-            exit 1
-          fi
-          
-          echo "📊 Analysis Results:"
-          cat pr_analysis.txt
-          
-          # 🎯 修正3: より確実な値抽出
-          FILES_COUNT=$(grep -E "found [0-9]+ files" pr_analysis.txt | grep -oE "[0-9]+" || echo "0")
-          ANALYSIS_TIME=$(grep -E "Total.*took: [0-9.]+s" pr_analysis.txt | grep -oE "[0-9.]+s" || echo "N/A")
-          LANGUAGES=$(grep -A 10 "言語別:" pr_analysis.txt | grep -E "• \w+:" | wc -l || echo "1")
-          
-          echo "files_analyzed=$FILES_COUNT" >> $GITHUB_OUTPUT
-          echo "analysis_time=$ANALYSIS_TIME" >> $GITHUB_OUTPUT
-          echo "languages_detected=$LANGUAGES" >> $GITHUB_OUTPUT
-
-      - name: Generate Impact Report
-        run: |
-          PR_FILES=${{ steps.analyze-pr.outputs.files_analyzed }}
-          ANALYSIS_TIME=${{ steps.analyze-pr.outputs.analysis_time }}
-          LANGUAGES_COUNT=${{ steps.analyze-pr.outputs.languages_detected }}
-          
-          cat > impact_report.md << EOF
-          ## 🦀 NekoCode 分析レポート
-          
-          ### 📊 コードの影響の概要
-          
-          | メトリック | 価値 |
-          |-----------|------|
-| **分析対象** | $(basename "$GITHUB_WORKSPACE") ディレクトリ全体 |
-          | **分析されたファイル** | ${PR_FILES} ファイル |
-          | **分析時間** | ${ANALYSIS_TIME} |
-          | **検出された言語** | ${LANGUAGES_COUNT}言語 |
-          
-          ### ✅ 分析ステータス
-          
-          - **コード品質**: NekoCode分析が正常完了
-          - **パフォーマンス**: 分析時間 ${ANALYSIS_TIME}
-          - **互換性**: 検出されたファイルがエラーなしで処理完了
-          
-          ---
-          *🚀 [NekoCode](https://github.com/moe-charm/nekocode-rust)による分析*
-          EOF
-
-      - name: Comment PR
-        uses: actions/github-script@v7
-        with:
-          script: |
-            const fs = require('fs');
-            const report = fs.readFileSync('impact_report.md', 'utf8');
-            
-            const comments = await github.rest.issues.listComments({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              issue_number: context.issue.number,
-            });
-            
-            const nekocodeComment = comments.data.find(comment => 
-              comment.body.includes('🦀 NekoCode 分析レポート')
-            );
-            
-            if (nekocodeComment) {
-              await github.rest.issues.updateComment({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                comment_id: nekocodeComment.id,
-                body: report
-              });
-            } else {
-              await github.rest.issues.createComment({
-                owner: context.repo.owner,
-                repo: context.repo.repo,
-                issue_number: context.issue.number,
-                body: report
-              });
-            }
\ No newline at end of file
diff --git a/.github/workflows/plugin-v2-smoke.yml b/.github/workflows/plugin-v2-smoke.yml
deleted file mode 100644
index ce1c2654..00000000
--- a/.github/workflows/plugin-v2-smoke.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-name: plugin-v2-smoke
-
-on:
-  push:
-    branches: [ main, master, "**" ]
-  pull_request:
-    branches: [ "**" ]
-
-jobs:
-  linux-smoke:
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache cargo
-        uses: Swatinem/rust-cache@v2
-
-      - name: Run plugin v2 smoke
-        run: |
-          bash tools/plugin_v2_smoke.sh
-
diff --git a/.github/workflows/plugins-e2e.yml b/.github/workflows/plugins-e2e.yml
deleted file mode 100644
index 1164e7ee..00000000
--- a/.github/workflows/plugins-e2e.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-name: Plugins E2E (Linux)
-
-on:
-  push:
-    branches: [ main, dev ]
-  pull_request:
-    branches: [ main, dev ]
-
-jobs:
-  plugins-e2e:
-    runs-on: ubuntu-latest
-    timeout-minutes: 15
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          override: true
-
-      - name: Cache cargo
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            target
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-
-      - name: Build (release)
-        run: cargo build --release -j2
-
-      - name: Run E2E with plugins (Linux)
-        env:
-          RUST_BACKTRACE: 1
-          NYASH_NET_LOG: "0"
-        run: |
-          cargo test --features plugins -q -- --nocapture
-
diff --git a/.github/workflows/pyvm-llvmlite-parity.yml b/.github/workflows/pyvm-llvmlite-parity.yml
deleted file mode 100644
index ebafdedf..00000000
--- a/.github/workflows/pyvm-llvmlite-parity.yml
+++ /dev/null
@@ -1,55 +0,0 @@
-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
-
diff --git a/.github/workflows/pyvm-smoke.yml b/.github/workflows/pyvm-smoke.yml
deleted file mode 100644
index ecd95493..00000000
--- a/.github/workflows/pyvm-smoke.yml
+++ /dev/null
@@ -1,83 +0,0 @@
-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
diff --git a/.github/workflows/selfhost-bootstrap.yml b/.github/workflows/selfhost-bootstrap.yml
deleted file mode 100644
index 59108458..00000000
--- a/.github/workflows/selfhost-bootstrap.yml
+++ /dev/null
@@ -1,50 +0,0 @@
-name: Selfhost Bootstrap Smoke
-
-on:
-  push:
-    paths:
-      - 'src/**'
-      - 'apps/**'
-      - 'tools/**'
-      - 'docs/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-      - '.github/workflows/selfhost-bootstrap.yml'
-  pull_request:
-    paths:
-      - 'src/**'
-      - 'apps/**'
-      - 'tools/**'
-      - 'docs/**'
-
-jobs:
-  selfhost-bootstrap:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    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: Build (release, cranelift-jit)
-        run: cargo build --release --features cranelift-jit -j 2
-
-      - name: Run bootstrap selfhost smoke
-        run: timeout -s KILL 40s bash tools/bootstrap_selfhost_smoke.sh
-
diff --git a/.github/workflows/selfhost-exe-first.yml b/.github/workflows/selfhost-exe-first.yml
deleted file mode 100644
index 756eafb1..00000000
--- a/.github/workflows/selfhost-exe-first.yml
+++ /dev/null
@@ -1,57 +0,0 @@
-name: Selfhost EXE-first (Optional)
-
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: '0 7 * * *'
-
-jobs:
-  selfhost-exe-first:
-    runs-on: ubuntu-latest
-    timeout-minutes: 25
-    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 python3-pip
-          curl -fsSL https://apt.llvm.org/llvm.sh -o llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 18
-          llvm-config-18 --version
-
-      - name: Install llvmlite (Python)
-        run: |
-          python3 -m pip install --upgrade pip
-          python3 -m pip install llvmlite jsonschema
-
-      - name: Build nyash (release)
-        run: cargo build --release -j 2
-
-      - name: ny-llvmc dummy smoke
-        run: |
-          cargo build --release -p nyash-llvm-compiler -j 2
-          ./target/release/ny-llvmc --dummy --out /tmp/dummy.o
-          file /tmp/dummy.o || true
-
-      - name: Run EXE-first smoke (parser EXE + bridge)
-        run: timeout -s KILL 10m bash tools/exe_first_smoke.sh
diff --git a/.github/workflows/selfhost-minimal.yml b/.github/workflows/selfhost-minimal.yml
deleted file mode 100644
index 1f62c26d..00000000
--- a/.github/workflows/selfhost-minimal.yml
+++ /dev/null
@@ -1,54 +0,0 @@
-name: Selfhost Minimal Smoke
-
-on:
-  push:
-    branches: [ selfhosting-dev ]
-    paths:
-      - 'apps/selfhost-minimal/**'
-      - 'src/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-      - '.github/workflows/selfhost-minimal.yml'
-      - 'docs/**'
-  pull_request:
-    branches: [ selfhosting-dev ]
-    paths:
-      - 'apps/selfhost-minimal/**'
-      - 'src/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-      - 'docs/**'
-
-jobs:
-  selfhost-minimal:
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    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: Build (release, cranelift-jit)
-        run: cargo build --release --features cranelift-jit
-
-      - name: Run selfhost-minimal smoke
-        run: bash tools/selfhost_vm_smoke.sh
-
diff --git a/.github/workflows/smoke.yml b/.github/workflows/smoke.yml
deleted file mode 100644
index 01147b2d..00000000
--- a/.github/workflows/smoke.yml
+++ /dev/null
@@ -1,144 +0,0 @@
-name: LLVM Curated Smoke
-
-on:
-  push:
-    paths:
-      - 'src/**'
-      - 'examples/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-      - 'docs/**'
-      - '.github/workflows/smoke.yml'
-  pull_request:
-    paths:
-      - 'src/**'
-      - 'examples/**'
-      - 'tools/**'
-      - 'Cargo.toml'
-      - 'Cargo.lock'
-      - 'docs/**'
-
-jobs:
-  llvm-curated:
-    runs-on: ubuntu-latest
-    env:
-      CARGO_TERM_COLOR: always
-      # Disable external plugins to keep CI deterministic
-      NYASH_DISABLE_PLUGINS: '1'
-      NYASH_LLVM_USE_HARNESS: '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: Run curated LLVM smokes (PHI-on)
-        run: bash tools/smokes/curated_llvm.sh
-
-      - name: Run curated LLVM smokes (PHI-off)
-        run: bash tools/smokes/curated_llvm.sh --phi-off
-
-  jit-direct-smoke:
-    if: false # archived: JIT path not maintained in current phase
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        profile: [debug, release]
-    env:
-      CARGO_TERM_COLOR: always
-      # Disable external plugins to keep CI deterministic
-      NYASH_DISABLE_PLUGINS: '1'
-      # Ensure lowering runs
-      NYASH_JIT_THRESHOLD: '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: |
-            ${{ runner.os }}-cargo-
-
-      - name: Build (${{ matrix.profile }}, cranelift-jit)
-        run: |
-          if [ "${{ matrix.profile }}" = "release" ]; then
-            cargo build --release --features cranelift-jit
-          else
-            cargo build --features cranelift-jit
-          fi
-
-      - name: JIT-direct smoke: mir-branch-ret
-        run: |
-          BIN=./target/${{ matrix.profile }}/nyash
-          timeout 15s "$BIN" --jit-direct apps/tests/mir-branch-ret/main.nyash
-
-      - name: JIT-direct smoke: mir-phi-min
-        run: |
-          BIN=./target/${{ matrix.profile }}/nyash
-          timeout 15s "$BIN" --jit-direct apps/tests/mir-phi-min/main.nyash
-
-      - name: JIT-direct smoke: mir-branch-multi
-        run: |
-          BIN=./target/${{ matrix.profile }}/nyash
-          timeout 15s "$BIN" --jit-direct apps/tests/mir-branch-multi/main.nyash
-
-  smoke-compile-events:
-    if: false # archived: JIT compile-events not maintained in current phase
-    runs-on: ubuntu-latest
-    env:
-      CARGO_TERM_COLOR: always
-      NYASH_DISABLE_PLUGINS: '1'
-      NYASH_JIT_EVENTS_COMPILE: '1'
-      NYASH_JIT_HOSTCALL: '1'
-      NYASH_JIT_EVENTS_PATH: events.jsonl
-    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: Build
-        run: cargo build --release -j2 --features cranelift-jit
-
-      - name: Run HH example (compile events)
-        run: ./target/release/nyash --backend vm examples/jit_map_get_param_hh.nyash
-
-      - name: Verify events contain phase:lower
-        run: |
-          test -f events.jsonl
-          grep -q '"phase":"lower"' events.jsonl
diff --git a/.github/workflows/vm-jit-identical.yml b/.github/workflows/vm-jit-identical.yml
deleted file mode 100644
index 78811166..00000000
--- a/.github/workflows/vm-jit-identical.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-name: VM-JIT Identical Execution
-
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        strict: ["0", "1"]
-        vt: ["0", "1"]
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-            toolchain: stable
-            profile: minimal
-            override: true
-      - name: Cargo test (subset, with JIT feature)
-        env:
-          RUSTFLAGS: "-C debuginfo=0"
-          NYASH_ABI_STRICT: ${{ matrix.strict }}
-          NYASH_ABI_VTABLE: ${{ matrix.vt }}
-          NYASH_JIT_HOST_BRIDGE: "1"
-          NYASH_EXTERN_ROUTE_SLOTS: "1"
-          NYASH_VM_PIC_THRESHOLD: "8"
-        run: |
-          cargo test --features cranelift-jit \
-            src/tests/identical_exec.rs \
-            src/tests/identical_exec_collections.rs \
-            src/tests/identical_exec_string.rs \
-            src/tests/identical_exec_instance.rs \
-            src/tests/vtable_array_string.rs \
-            src/tests/vtable_strict.rs \
-            src/tests/host_reverse_slot.rs \
-            -- --nocapture
diff --git a/.github/workflows/vm-legacy-build.yml b/.github/workflows/vm-legacy-build.yml
deleted file mode 100644
index b1a25e54..00000000
--- a/.github/workflows/vm-legacy-build.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-name: vm-legacy-build
-
-on:
-  workflow_dispatch:
-  push:
-    paths:
-      - 'src/**'
-      - 'Cargo.toml'
-      - '.github/workflows/vm-legacy-build.yml'
-
-jobs:
-  build-vm-legacy:
-    runs-on: ubuntu-latest
-    timeout-minutes: 20
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Set up Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Cache Rust build
-        uses: Swatinem/rust-cache@v2
-        with:
-          cache-targets: true
-
-      - name: Build with vm-legacy + interpreter-legacy (compile check only)
-        run: cargo build --release --features vm-legacy,interpreter-legacy
-