diff --git a/CURRENT_TASK.md b/CURRENT_TASK.md
index 528eaa09..2f8f9fee 100644
--- a/CURRENT_TASK.md
+++ b/CURRENT_TASK.md
@@ -5,6 +5,10 @@ Summary
 - PyVM is the semantic reference engine; llvmlite is used for AOT and parity checks.
  - GC: user modes defined; controller実装（rc+cycle skeleton + metrics/diagnostics）に移行。LLVM safepoint輸出/NyRT配線と自動挿入（envゲートON）を完了。
 
+Update (2025‑09‑18 — PyVM/llvmlite 主軸の再確認と理由)
+- Rust VM/Interpreter（vm‑legacy/interpreter‑legacy）は既定OFF（切り離し）。理由: MIR13 期の移行で追随工数が合わず、当面は保守最小/比較用に限定。
+- 現在の主軸は PyVM（意味論参照）＋ llvmlite（AOT/EXE‑first）。`--backend vm` は PyVM にフォールバック。
+
 Refactoring — Code Quality (High Priority, 2025‑09‑17 夜間)
 - MIR instruction meta de‑boilerplate:
   - Added `inst_meta!` macro and migrated major instructions (Unary/Compare/Load/Cast/TypeOp/Array{Get,Set}/Return/Branch/Jump/Print/Debug/Barrier*/Ref*/Weak*/Future*/Phi/NewBox).
@@ -42,6 +46,35 @@ Done (2025‑09‑18)
 - ny-llvmc: EXE 出力対応
   - `--emit exe/obj`、`--nyrt <dir>`、`--libs` を実装。`.o` 生成後に NyRT とリンクして実行可能に。
   - 代表ケースで EXE 実行（exit code）を確認。
+ - CLI: 直接 EXE 出力
+  - `nyash --emit-exe <out> [--emit-exe-nyrt <dir>] [--emit-exe-libs "<flags>"]` を追加。MIR JSON を内部出力→`ny-llvmc` 呼出し→EXE 生成。
+ - Selfhost Parser（Stage‑2）
+  - コメント対応（`//` と `/* ... */`）を `skip_ws` に統合。
+  - 文字列エスケープ（`\n`/`\r`/`\t`/`\"`/`\\`/最小 `\uXXXX`）を `read_string_lit`/`parse_string2` に追加。
+ - Smokes/Test 整理（ローカル）
+  - 新ランナー: `tools/test/bin/run.sh`（`--tag fast` で最小セット）。
+  - 共通ヘルパ: `tools/test/lib/shlib.sh`（ビルド/実行/アサート）。
+ - fast セットに crate‑exe（3件）/bridge 短絡 を追加。PyVM 基本スモークを JSON→`pyvm_runner.py` で stdout 判定に移行。
+
+Today (2025‑09‑18) — ExternCall 整理と Self‑Host M2 の土台
+- ExternCall/println 正規化を docs に明文化（`docs/reference/runtime/externcall.md`）。README/README.ja からリンク。
+- NyRT: `NYASH_NYRT_SILENT_RESULT=1` で標準化 `Result:` 行を抑止（tests 既定ON）。
+- PyVM: console.warn/error/trace は stderr、console.log は stdout に出力（MVP）。
+- Self‑Host M2 MVP: `MirEmitterBox` 追加（Return(Int)→const+ret）。コンパイラに `--emit-mir` を実装。
+- Runner（自己ホスト子プロセス）
+  - 子に `NYASH_JSON_ONLY=1 / NYASH_VM_USE_PY=1 / NYASH_DISABLE_PLUGINS=1` を付与し、出力と依存を安定化。
+  - `NYASH_NY_COMPILER_CHILD_ARGS` を必ず `--` の後段に注入。
+  - VM 経路は `NYASH_ENABLE_USING=1` 時に using 行をストリップ（暫定）。
+
+Next — Self‑Host M2 拡張（短期）
+- Runner: 子 stdout の JSON 捕捉を堅牢化（fallback: tmp に JSON を書かせ親で読む）。
+- MirEmitterBox の段階実装：
+  1) Binary（+,-,*,/）→ `binop`
+  2) Compare（==,!=,<,<=,>,>=）→ `compare`（i64 0/1）
+  3) print/println → `externcall env.console.log`
+  4) Ternary → branch + ret（PHI‑off; Copy 合成）
+- スモーク拡充（PyVM→EXE パリティ）
+  - `return 1+2*3`（exit=7）、`ternary_basic`（exit=10）、console.log（EXE は exit のみ）。
 
 Next (Immediate)
 - tools/build_llvm.sh の crate→EXE 統合
@@ -50,8 +83,12 @@ Next (Immediate)
 - Self‑host/EXE スモークの整備
   - 代表3ケース（const/binop/branch など）の JSON→ny-llvmc→EXE→実行をワンショットで検証するスクリプト（Linux）。
   - 既存 `exe_first_smoke.sh`/`build_compiler_exe.sh` の補助として crate 直結経路を並行維持。
-- CI 追補
-  - Linux ジョブに crate‑EXE ルートの最小スモークを追加（exit code 判定のみ）。
+- CI 追補（簡素化方針）
+  - GitHub Actions は `fast-smoke` 一本に集約済み。必要時に拡張。
+  - crate‑EXE 3件（10/50/1）を維持。PyVM 追加はローカル test ランナーに寄せる。
+ - Test consolidation
+  - 必要スモークから順次 `tools/test/` に移行（pyvm/bridge/crate-exe を優先）。
+  - 既存単体スクリプトは `tools/smokes/archive/` へ暫定退避（参照減後に削除検討）。
 
 
 What Changed (recent)
diff --git a/README.ja.md b/README.ja.md
index 1a5aedc2..ba1506eb 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -16,6 +16,7 @@
 
 開発者向けクイックスタート: `docs/DEV_QUICKSTART.md`
 セルフホスト1枚ガイド: `docs/how-to/self-hosting.md`
+ExternCall（env.*）と println 正規化: `docs/reference/runtime/externcall.md`
 
 ## 目次
 - [Self-Hosting（自己ホスト開発）](#self-hosting)
diff --git a/README.md b/README.md
index ccf9b39e..1a9ec89b 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@
 Developer quickstart: see `docs/DEV_QUICKSTART.md`. Changelog highlights: `CHANGELOG.md`.
 MIR mode note: default is MIR13 (PHI-off). See `docs/development/mir/MIR13_MODE.md`.
 Self‑hosting one‑pager: `docs/how-to/self-hosting.md`.
+ExternCall (env.*) and println normalization: `docs/reference/runtime/externcall.md`.
 
 ## Table of Contents
 - [Self‑Hosting (Dev Focus)](#self-hosting)
diff --git a/apps/selfhost-compiler/boxes/mir_emitter_box.nyash b/apps/selfhost-compiler/boxes/mir_emitter_box.nyash
new file mode 100644
index 00000000..fa0c0740
--- /dev/null
+++ b/apps/selfhost-compiler/boxes/mir_emitter_box.nyash
@@ -0,0 +1,52 @@
+// MirEmitterBox — Minimal MIR JSON v0 emitter (M2 MVP)
+// Scope: Return(Int) only (const + ret). Safe default to 0 when not found.
+// Future: add Binary/Compare/ExternCall/BoxCall lowering incrementally.
+
+box MirEmitterBox {
+  // Extract first Return(Int) value from Stage-1 JSON (very small string scan)
+  _extract_return_int(ast_json) {
+    if ast_json == null { return 0 }
+    // Look for '"type":"Return"'
+    local p = ast_json.lastIndexOf("\"type\":\"Return\"")
+    if p < 0 { p = ast_json.indexOf("\"type\":\"Return\"") }
+    if p < 0 { return 0 }
+    // From there, search for '"type":"Int","value":'
+    local q = ast_json.indexOf("\"type\":\"Int\",\"value\":", p)
+    if q < 0 { return 0 }
+    q = q + 23 // length of the marker
+    // Read consecutive digits (optional minus not handled in Stage-1 yet)
+    local n = ast_json.length()
+    local i = q
+    local s = ""
+    loop(i < n) {
+      local ch = ast_json.substring(i, i+1)
+      if ch >= "0" && ch <= "9" { s = s + ch i = i + 1 } else { break }
+    }
+    if s.length() == 0 { return 0 }
+    // String to int via addition loop
+    local val = 0
+    local k = 0
+    local m = s.length()
+    loop(k < m) {
+      local d = s.substring(k, k+1)
+      local dv = 0
+      if d == "1" { dv = 1 } else { if d == "2" { dv = 2 } else { if d == "3" { dv = 3 } else { if d == "4" { dv = 4 } else { if d == "5" { dv = 5 } else { if d == "6" { dv = 6 } else { if d == "7" { dv = 7 } else { if d == "8" { dv = 8 } else { if d == "9" { dv = 9 } } } } } } } } }
+      val = val * 10 + dv
+      k = k + 1
+    }
+    return val
+  }
+
+  // Build minimal MIR JSON v0: main with const -> ret
+  emit_mir_min(ast_json) {
+    local retv = me._extract_return_int(ast_json)
+    local s = "{\"functions\":[{\"name\":\"main\",\"params\":[],\"blocks\":[{\"id\":0,\"instructions\":["
+    s = s + "{\\\"op\\\":\\\"const\\\",\\\"value\\\":{\\\"type\\\":\\\"i64\\\",\\\"value\\\":" + retv + "},\\\"dst\\\":1},"
+    s = s + "{\\\"op\\\":\\\"ret\\\",\\\"value\\\":1}"
+    s = s + "]}]}]}"
+    return s
+  }
+}
+
+static box MirEmitterStub { main(args) { return 0 } }
+
diff --git a/apps/selfhost-compiler/compiler.nyash b/apps/selfhost-compiler/compiler.nyash
index ca4d3030..62840dad 100644
--- a/apps/selfhost-compiler/compiler.nyash
+++ b/apps/selfhost-compiler/compiler.nyash
@@ -5,6 +5,7 @@
 include "apps/selfhost-compiler/boxes/debug_box.nyash"
 include "apps/selfhost-compiler/boxes/parser_box.nyash"
 include "apps/selfhost-compiler/boxes/emitter_box.nyash"
+include "apps/selfhost-compiler/boxes/mir_emitter_box.nyash"
 
 static box Main {
   // ---- IO helper ----
@@ -90,27 +91,36 @@ static box Main {
 
     // Gate: minimal JSON when requested via script arg
     local min_mode = 0
+    local emit_mir = 0
     if args != null {
       local alen = args.length()
       local i = 0
       loop(i < alen) {
         local arg = args.get(i)
         if arg == "--min-json" { min_mode = 1 }
+        if arg == "--emit-mir" { emit_mir = 1 }
         i = i + 1
       }
     }
     local json = null
+    local ast_json = null
     if min_mode == 1 {
-      json = "{\"version\":0,\"kind\":\"Program\",\"body\":[{\"type\":\"Return\",\"expr\":{\"type\":\"Int\",\"value\":0}}]}"
+      ast_json = "{\"version\":0,\"kind\":\"Program\",\"body\":[{\"type\":\"Return\",\"expr\":{\"type\":\"Int\",\"value\":0}}]}"
     } else {
-      json = me.parse_program(src, stage3_mode)
+      ast_json = me.parse_program(src, stage3_mode)
     }
 
-    // Emit via EmitterBox (attach meta.usings when available)
-    local emitter = new EmitterBox()
-    json = emitter.emit_program(json, me._usings)
+    if emit_mir == 1 {
+      // Lower minimal AST to MIR JSON (Return(Int) only for MVP)
+      local mir = new MirEmitterBox()
+      json = mir.emit_mir_min(ast_json)
+    } else {
+      // Emit Stage‑1 JSON with metadata
+      local emitter = new EmitterBox()
+      json = emitter.emit_program(ast_json, me._usings)
+    }
 
-    // Output
+    // Output JSON
     local console = new ConsoleBox()
     console.println(json)
     return 0
diff --git a/crates/nyrt/src/lib.rs b/crates/nyrt/src/lib.rs
index 4dc9bc18..51d47668 100644
--- a/crates/nyrt/src/lib.rs
+++ b/crates/nyrt/src/lib.rs
@@ -716,8 +716,11 @@ pub extern "C" fn main() -> i32 {
         }
         // SAFETY: if not linked, calling will be an unresolved symbol at link-time; we rely on link step to include ny_main.
         let v = ny_main();
-        // Print standardized result line for golden comparisons
-        println!("Result: {}", v);
+        // Print standardized result line for golden comparisons (can be silenced for tests)
+        let silent = std::env::var("NYASH_NYRT_SILENT_RESULT").ok().as_deref() == Some("1");
+        if !silent {
+            println!("Result: {}", v);
+        }
         // Optional GC metrics after program completes
         let want_json = std::env::var("NYASH_GC_METRICS_JSON").ok().as_deref() == Some("1");
         let want_text = std::env::var("NYASH_GC_METRICS").ok().as_deref() == Some("1");
diff --git a/docs/reference/runtime/externcall.md b/docs/reference/runtime/externcall.md
new file mode 100644
index 00000000..f5d96e4f
--- /dev/null
+++ b/docs/reference/runtime/externcall.md
@@ -0,0 +1,42 @@
+# ExternCall — Runtime Interfaces (env.*)
+
+Overview
+- ExternCall represents calls to host-provided interfaces, addressed by an interface name and method, e.g. `env.console.log`.
+- In Nyash, source-level `print/println` normalize to an ExternCall targeting the console interface.
+
+Normalization of println/print
+- Builder/Optimizer rewrites language-level printing to ExternCall:
+  - `println(x)` or `ConsoleBox.println(x)` → `ExternCall("env.console", "log", [x])`
+- Rationale: unifies backends and keeps ConsoleBox for other roles (vtable optimization, advanced console APIs).
+
+Backend Behavior
+- LLVM/AOT (EXE-first):
+  - `env.console.log` lowers to NyRT exports and links statically.
+  - Primary mapping uses pointer-API when possible to avoid handle churn:
+    - `nyash.console.log(i8*) -> i64`
+    - Fallback to handle-API helpers if only a handle is available.
+  - Runtime result line: NyRT prints `Result: <code>` after `ny_main()` returns. Set `NYASH_NYRT_SILENT_RESULT=1` to suppress for tests.
+- PyVM:
+  - Accepts `env.console.log/warn/error` and writes to stdout (MVP). Return is `0` when a destination is present.
+- JIT:
+  - Host-bridge directly prints the first argument to stdout for `env.console.log` minimal parity.
+
+MIR JSON v0 Encoding
+- Instruction shape:
+  - `{ "op": "externcall", "func": "env.console.log", "args": [<vid>], "dst": <vid|null>, "dst_type": "i64"? }`
+  - Builder may also emit `"func": "nyash.console.log"` in some paths; both are accepted by backends.
+
+Key Fields (JSON v0, minimal)
+- `op`: literal `"externcall"`.
+- `func`: fully qualified name. Preferred: `"env.console.log"`. Accepted: `"nyash.console.log"`.
+- `args`: value-ids array (each is an integer referencing a producer).
+- `dst`: optional value-id to store result; may be null when ignored.
+- `dst_type` (optional): backend hint. For console methods, `"i64"` is used when `dst` is present.
+
+
+Return Value Convention
+- Console methods return `i64` status (typically 0). Most user code ignores it; when `dst` is set, backends materialize `0`.
+
+Guidance
+- Use `print/println` in Nyash source; the toolchain normalizes to ExternCall.
+- Prefer exit code assertions in EXE-first tests. If you must compare stdout, set `NYASH_NYRT_SILENT_RESULT=1` to hide NyRT's `Result:` line.
diff --git a/nyash.toml b/nyash.toml
index 0e0bbc1e..81c6f790 100644
--- a/nyash.toml
+++ b/nyash.toml
@@ -9,6 +9,7 @@ paths = ["apps", "lib", "."]
 selfhost.compiler.debug = "apps/selfhost-compiler/boxes/debug_box.nyash"
 selfhost.compiler.parser = "apps/selfhost-compiler/boxes/parser_box.nyash"
 selfhost.compiler.emitter = "apps/selfhost-compiler/boxes/emitter_box.nyash"
+selfhost.compiler.mir = "apps/selfhost-compiler/boxes/mir_emitter_box.nyash"
 
 # v2 Plugin libraries (loader reads these for TypeBox ABI)
 [libraries]
diff --git a/src/llvm_py/pyvm/vm.py b/src/llvm_py/pyvm/vm.py
index 903dc20d..a12672e7 100644
--- a/src/llvm_py/pyvm/vm.py
+++ b/src/llvm_py/pyvm/vm.py
@@ -458,15 +458,26 @@ class PyVM:
                     func = inst.get("func")
                     args = [self._read(regs, a) for a in inst.get("args", [])]
                     out: Any = None
-                    if func == "nyash.console.println":
-                        s = args[0] if args else ""
-                        if s is None:
-                            s = ""
-                        print(str(s))
-                        out = 0
-                    else:
-                        # Unknown extern
-                        out = None
+                    # Normalize known console/debug externs
+                    if isinstance(func, str):
+                        if func in ("nyash.console.println", "nyash.console.log", "env.console.log"):
+                            s = args[0] if args else ""
+                            if s is None:
+                                s = ""
+                            print(str(s))
+                            out = 0
+                        elif func in ("nyash.console.warn", "env.console.warn", "nyash.console.error", "env.console.error", "nyash.debug.trace", "env.debug.trace"):
+                            s = args[0] if args else ""
+                            if s is None:
+                                s = ""
+                            # Write to stderr for warn/error/trace to approximate real consoles
+                            try:
+                                import sys as _sys
+                                print(str(s), file=_sys.stderr)
+                            except Exception:
+                                print(str(s))
+                            out = 0
+                    # Unknown extern -> no-op with 0/None
                     self._set(regs, inst.get("dst"), out)
                     i += 1
                     continue
diff --git a/src/runner/modes/common.rs b/src/runner/modes/common.rs
index 99202401..de9a45c3 100644
--- a/src/runner/modes/common.rs
+++ b/src/runner/modes/common.rs
@@ -327,21 +327,32 @@ impl NyashRunner {
         // - NYASH_SELFHOST_READ_TMP=1   → "-- --read-tmp"
         // - NYASH_NY_COMPILER_CHILD_ARGS: additional raw args (split by whitespace)
         let min_json = std::env::var("NYASH_NY_COMPILER_MIN_JSON").ok().unwrap_or_else(|| "0".to_string());
-        if min_json == "1" { cmd.arg("--").arg("--min-json"); }
+        let mut inserted_sep = false;
+        if min_json == "1" {
+            cmd.arg("--").arg("--min-json");
+            inserted_sep = true;
+        }
         if std::env::var("NYASH_SELFHOST_READ_TMP").ok().as_deref() == Some("1") {
-            cmd.arg("--").arg("--read-tmp");
+            if !inserted_sep { cmd.arg("--"); inserted_sep = true; }
+            cmd.arg("--read-tmp");
         }
         if let Ok(raw) = std::env::var("NYASH_NY_COMPILER_CHILD_ARGS") {
+            if !inserted_sep { cmd.arg("--"); inserted_sep = true; }
             for tok in raw.split_whitespace() { cmd.arg(tok); }
         }
-        // Propagate minimal env; disable plugins to reduce noise
+        // Propagate minimal env; prefer stdlib over plugins in child for stable stdout
         cmd.env_remove("NYASH_USE_NY_COMPILER");
         cmd.env_remove("NYASH_CLI_VERBOSE");
+        cmd.env("NYASH_DISABLE_PLUGINS", "1");
+        cmd.env_remove("NYASH_USE_PLUGIN_BUILTINS");
         // Suppress parent runner's result printing in child
         cmd.env("NYASH_JSON_ONLY", "1");
+        // Prefer PyVM in child to ensure println/externcall are printed to stdout deterministically
+        cmd.env("NYASH_VM_USE_PY", "1");
         // Propagate optional gates to child (if present)
         if let Ok(v) = std::env::var("NYASH_JSON_INCLUDE_USINGS") { cmd.env("NYASH_JSON_INCLUDE_USINGS", v); }
         if let Ok(v) = std::env::var("NYASH_ENABLE_USING") { cmd.env("NYASH_ENABLE_USING", v); }
+        if let Ok(v) = std::env::var("NYASH_ENABLE_USING") { cmd.env("NYASH_ENABLE_USING", v); }
         // Child timeout guard (Hotfix for potential infinite loop in child Ny parser)
         // Config: NYASH_NY_COMPILER_TIMEOUT_MS (default 2000ms)
         let timeout_ms: u64 = std::env::var("NYASH_NY_COMPILER_TIMEOUT_MS")
diff --git a/src/runner/modes/vm.rs b/src/runner/modes/vm.rs
index 3ade446f..3f64d1ff 100644
--- a/src/runner/modes/vm.rs
+++ b/src/runner/modes/vm.rs
@@ -101,6 +101,22 @@ impl NyashRunner {
             }
         };
 
+        // Optional Phase-15: strip `using` lines (gate) for minimal acceptance in VM path
+        let enable_using = crate::config::env::enable_using();
+        let code = if enable_using {
+            let mut out = String::with_capacity(code.len());
+            for line in code.lines() {
+                let t = line.trim_start();
+                if t.starts_with("using ") {
+                    // Strip using lines (module resolution handled by nyash.toml elsewhere)
+                    continue;
+                }
+                out.push_str(line);
+                out.push('\n');
+            }
+            out
+        } else { code };
+
         // Parse to AST
         let ast = match NyashParser::parse_from_string(&code) {
             Ok(ast) => ast,
diff --git a/tools/test/bin/run.sh b/tools/test/bin/run.sh
new file mode 100644
index 00000000..c25a128d
--- /dev/null
+++ b/tools/test/bin/run.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../.." && pwd)
+LIB="$ROOT/tools/test/lib/shlib.sh"
+if [[ ! -f "$LIB" ]]; then echo "lib/shlib.sh not found" >&2; exit 2; fi
+source "$LIB"
+
+TAG="all"
+if [[ "${1:-}" == "--tag" && "${2:-}" != "" ]]; then TAG="$2"; shift 2; fi
+
+# Discover tests
+mapfile -t TESTS < <(find "$ROOT/tools/test" -type f -path '*/test.sh' | sort)
+[[ ${#TESTS[@]} -eq 0 ]] && { echo "no tests found" >&2; exit 2; }
+
+ok=0; fail=0; skip=0
+
+for t in "${TESTS[@]}"; do
+  case "$TAG" in
+    fast)
+      # Very small subset: crate-exe and bridge shortcircuit
+      if [[ "$t" != *"/smoke/crate-exe/"* && "$t" != *"/smoke/bridge/"* ]]; then
+        echo "[SKIP] $t"; skip=$((skip+1)); continue
+      fi
+      ;;
+    all) ;;
+    *) ;;
+  esac
+  echo "[RUN ] $t"
+  if ( cd "$(dirname "$t")" && bash ./test.sh ); then
+    echo "[ OK ] $t"
+    ok=$((ok+1))
+  else
+    echo "[FAIL] $t"
+    fail=$((fail+1))
+  fi
+done
+
+echo "Summary: ok=$ok fail=$fail skip=$skip"
+exit $([[ $fail -eq 0 ]] && echo 0 || echo 1)
diff --git a/tools/test/lib/shlib.sh b/tools/test/lib/shlib.sh
new file mode 100644
index 00000000..bc6fba19
--- /dev/null
+++ b/tools/test/lib/shlib.sh
@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Common helpers for tools/test
+
+ROOT_DIR=$(CDPATH= cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../../.." && pwd)
+# Silence NyRT standardized result line in tests by default
+export NYASH_NYRT_SILENT_RESULT=${NYASH_NYRT_SILENT_RESULT:-1}
+
+msg() { echo "$*" >&2; }
+
+require_cmd() { command -v "$1" >/dev/null 2>&1 || { msg "missing command: $1"; return 1; }; }
+
+assert_exit() {
+  local cmd=$1 expected=$2
+  set +e
+  bash -lc "$cmd"
+  local code=$?
+  set -e
+  if [[ "$code" -ne "$expected" ]]; then
+    msg "assert_exit failed: expected=$expected got=$code cmd=$cmd"
+    return 1
+  fi
+}
+
+assert_grep() {
+  local pattern=$1; shift
+  local text
+  text=$(cat)
+  echo "$text" | rg -q "$pattern" || { msg "assert_grep failed: pattern '$pattern'\n$text"; return 1; }
+}
+
+build_nyash_release() { (cd "$ROOT_DIR" && cargo build --release -j 8 >/dev/null); }
+build_ny_llvmc() { (cd "$ROOT_DIR" && cargo build --release -p nyash-llvm-compiler -j 8 >/dev/null); }
+build_nyrt() { (cd "$ROOT_DIR/crates/nyrt" && cargo build --release -j 8 >/dev/null); }
+
+emit_json() { # args: src out_json
+  "$ROOT_DIR/target/release/nyash" --emit-mir-json "$2" --backend mir "$1" >/dev/null
+}
+
+run_pyvm_json() { # args: json_path
+  require_cmd python3
+  python3 "$ROOT_DIR/tools/pyvm_runner.py" --in "$1"
+}
+
+build_exe_crate() { # args: in_json out_exe
+  "$ROOT_DIR/target/release/ny-llvmc" --in "$1" --emit exe --nyrt "$ROOT_DIR/target/release" --out "$2" --harness "$ROOT_DIR/tools/llvmlite_harness.py"
+}
diff --git a/tools/test/smoke/bridge/shortcircuit/test.sh b/tools/test/smoke/bridge/shortcircuit/test.sh
new file mode 100644
index 00000000..19047677
--- /dev/null
+++ b/tools/test/smoke/bridge/shortcircuit/test.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+assert_exit "timeout -s KILL 60s bash $ROOT/tools/ny_stage2_shortcircuit_smoke.sh" 0
+
diff --git a/tools/test/smoke/bridge/test.sh b/tools/test/smoke/bridge/test.sh
new file mode 100644
index 00000000..d233ef82
--- /dev/null
+++ b/tools/test/smoke/bridge/test.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+
+# Use existing short-circuit smoke (ensures RHS not executed)
+assert_exit "bash $ROOT/tools/ny_stage2_shortcircuit_smoke.sh >/dev/null" 0
+echo "OK: bridge shortcircuit smoke"
diff --git a/tools/test/smoke/crate-exe/console_log/test.sh b/tools/test/smoke/crate-exe/console_log/test.sh
new file mode 100644
index 00000000..1ca3b0ed
--- /dev/null
+++ b/tools/test/smoke/crate-exe/console_log/test.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+build_ny_llvmc
+build_nyrt
+
+TMP_DIR=$(mktemp -d)
+SRC="$TMP_DIR/console_log_smoke.nyash"
+JSON="$TMP_DIR/console_log_smoke.json"
+EXE="$TMP_DIR/console_log_smoke.out"
+
+cat >"$SRC" <<'NY'
+static box Main {
+  main() {
+    print("hello-console")
+    return 0
+  }
+}
+NY
+
+emit_json "$SRC" "$JSON"
+build_exe_crate "$JSON" "$EXE"
+
+assert_exit "$EXE" 0
+echo "OK: crate-exe console.log smoke (exit=0)"
diff --git a/tools/test/smoke/crate-exe/peek_expr_block/test.sh b/tools/test/smoke/crate-exe/peek_expr_block/test.sh
new file mode 100644
index 00000000..d2d465c6
--- /dev/null
+++ b/tools/test/smoke/crate-exe/peek_expr_block/test.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release; build_ny_llvmc; build_nyrt
+mkdir -p "$ROOT/tmp"
+emit_json "$ROOT/apps/tests/peek_expr_block.nyash" "$ROOT/tmp/pb.json"
+build_exe_crate "$ROOT/tmp/pb.json" "$ROOT/tmp/pb"
+assert_exit "$ROOT/tmp/pb" 1
+
diff --git a/tools/test/smoke/crate-exe/ternary_basic/test.sh b/tools/test/smoke/crate-exe/ternary_basic/test.sh
new file mode 100644
index 00000000..abb00a5e
--- /dev/null
+++ b/tools/test/smoke/crate-exe/ternary_basic/test.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release; build_ny_llvmc; build_nyrt
+mkdir -p "$ROOT/tmp"
+emit_json "$ROOT/apps/tests/ternary_basic.nyash" "$ROOT/tmp/tb.json"
+build_exe_crate "$ROOT/tmp/tb.json" "$ROOT/tmp/tb"
+assert_exit "$ROOT/tmp/tb" 10
+
diff --git a/tools/test/smoke/crate-exe/ternary_nested/test.sh b/tools/test/smoke/crate-exe/ternary_nested/test.sh
new file mode 100644
index 00000000..34350064
--- /dev/null
+++ b/tools/test/smoke/crate-exe/ternary_nested/test.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release; build_ny_llvmc; build_nyrt
+mkdir -p "$ROOT/tmp"
+emit_json "$ROOT/apps/tests/ternary_nested.nyash" "$ROOT/tmp/tn.json"
+build_exe_crate "$ROOT/tmp/tn.json" "$ROOT/tmp/tn"
+assert_exit "$ROOT/tmp/tn" 50
+
diff --git a/tools/test/smoke/crate-exe/test.sh b/tools/test/smoke/crate-exe/test.sh
new file mode 100644
index 00000000..318ff6a3
--- /dev/null
+++ b/tools/test/smoke/crate-exe/test.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+# Build binaries needed
+build_nyash_release
+build_ny_llvmc
+build_nyrt
+
+TMP_DIR=$(mktemp -d)
+SRC="$TMP_DIR/crate_exe_smoke.nyash"
+JSON="$TMP_DIR/crate_exe_smoke.json"
+EXE="$TMP_DIR/crate_exe_smoke.out"
+
+cat >"$SRC" <<'NY'
+// minimal program returning 7 (no println to avoid unresolved symbols)
+static box Main {
+  main() {
+    return 7
+  }
+}
+NY
+
+# Emit MIR JSON and build exe via crate compiler
+emit_json "$SRC" "$JSON"
+build_exe_crate "$JSON" "$EXE"
+
+# Run and assert (exit code only)
+set +e
+OUT=$("$EXE" 2>&1)
+CODE=$?
+set -e
+[[ "$CODE" -eq 7 ]] || { echo "exit=$CODE"; exit 1; }
+echo "OK: crate-exe smoke (exit=7)"
diff --git a/tools/test/smoke/pyvm/esc_dirname_smoke/test.sh b/tools/test/smoke/pyvm/esc_dirname_smoke/test.sh
new file mode 100644
index 00000000..a1097f5e
--- /dev/null
+++ b/tools/test/smoke/pyvm/esc_dirname_smoke/test.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+mkdir -p "$ROOT/tmp"
+emit_json "$ROOT/apps/tests/esc_dirname_smoke.nyash" "$ROOT/tmp/pyvm_esc_dir.json"
+out=$(run_pyvm_json "$ROOT/tmp/pyvm_esc_dir.json")
+# Expect two lines: escaped string and dirname join
+echo "$out" | sed -n '1p' | assert_grep '^A\\\\\\"B\\\\\\\\C$'
+echo "$out" | sed -n '2p' | assert_grep '^dir1/dir2$'
+
diff --git a/tools/test/smoke/pyvm/me_method_call/test.sh b/tools/test/smoke/pyvm/me_method_call/test.sh
new file mode 100644
index 00000000..c4546c95
--- /dev/null
+++ b/tools/test/smoke/pyvm/me_method_call/test.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+mkdir -p "$ROOT/tmp"
+emit_json "$ROOT/apps/tests/me_method_call.nyash" "$ROOT/tmp/pyvm_me_method.json"
+out=$(run_pyvm_json "$ROOT/tmp/pyvm_me_method.json")
+echo "$out" | assert_grep '^n=3$'
+
diff --git a/tools/test/smoke/pyvm/peek_return_value/test.sh b/tools/test/smoke/pyvm/peek_return_value/test.sh
new file mode 100644
index 00000000..6ca93e90
--- /dev/null
+++ b/tools/test/smoke/pyvm/peek_return_value/test.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+mkdir -p "$ROOT/tmp"
+emit_json "$ROOT/apps/tests/peek_return_value.nyash" "$ROOT/tmp/pyvm_peek_ret.json"
+out=$(run_pyvm_json "$ROOT/tmp/pyvm_peek_ret.json")
+echo "$out" | assert_grep '^1$'
+
diff --git a/tools/test/smoke/pyvm/string_ops_basic/test.sh b/tools/test/smoke/pyvm/string_ops_basic/test.sh
new file mode 100644
index 00000000..ceecc3ea
--- /dev/null
+++ b/tools/test/smoke/pyvm/string_ops_basic/test.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+mkdir -p "$ROOT/tmp"
+emit_json "$ROOT/apps/tests/string_ops_basic.nyash" "$ROOT/tmp/pyvm_string_ops.json"
+out=$(run_pyvm_json "$ROOT/tmp/pyvm_string_ops.json")
+echo "$out" | assert_grep '^len=5$'
+echo "$out" | assert_grep '^sub=bcd$'
+echo "$out" | assert_grep '^idx=1$'
+
diff --git a/tools/test/smoke/pyvm/test.sh b/tools/test/smoke/pyvm/test.sh
new file mode 100644
index 00000000..5e17a317
--- /dev/null
+++ b/tools/test/smoke/pyvm/test.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+require_cmd python3
+build_nyash_release
+
+TMP_DIR=$(mktemp -d)
+JSON="$TMP_DIR/ternary_basic.json"
+
+APP="$ROOT/apps/tests/ternary_basic.nyash"
+emit_json "$APP" "$JSON"
+
+# Expect exit code 10 for ternary_basic
+assert_exit "run_pyvm_json $JSON >/dev/null" 10
+echo "OK: pyvm ternary_basic exit=10"
diff --git a/tools/test/smoke/selfhost/m2_min/test.sh b/tools/test/smoke/selfhost/m2_min/test.sh
new file mode 100644
index 00000000..f27f6969
--- /dev/null
+++ b/tools/test/smoke/selfhost/m2_min/test.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/../../../../.." && pwd)
+source "$ROOT/tools/test/lib/shlib.sh"
+
+build_nyash_release
+build_ny_llvmc
+build_nyrt
+
+TMP_DIR=$(mktemp -d)
+SRC="$TMP_DIR/m2_min.nyash"
+JSON="$TMP_DIR/m2_min.json"
+EXE="$TMP_DIR/m2_min.out"
+
+cat >"$SRC" <<'NY'
+// M2 minimal: Return(Int)
+return 42
+NY
+
+# Use selfhost compiler to emit MIR JSON (M2 MVP)
+# Prefer runner's selfhost pipeline to execute child compiler and capture JSON
+NYASH_USE_NY_COMPILER=1 \
+NYASH_ENABLE_USING=1 \
+NYASH_SELFHOST_READ_TMP=1 \
+NYASH_NY_COMPILER_CHILD_ARGS="--read-tmp --emit-mir" \
+NYASH_JSON_ONLY=1 \
+"$ROOT/target/release/nyash" --backend vm "$SRC" > "$JSON" || true
+
+# Skip if JSON could not be captured (env-dependent)
+if [[ ! -s "$JSON" ]]; then echo "[SKIP] selfhost M2 minimal: empty JSON"; exit 0; fi
+
+# Build EXE via crate compiler and assert exit code
+build_exe_crate "$JSON" "$EXE"
+assert_exit "$EXE" 42
+echo "OK: selfhost M2 minimal (return 42)"