phase: 20.49 COMPLETE; 20.50 Flow+String minimal reps; 20.51 selfhost v0/v1 minimal (Option A/B); hv1-inline binop/unop/copy; docs + run_all + CURRENT_TASK -> 21.0

tools/selfhost/gen_v1_from_provider.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# gen_v1_from_provider.sh — Generate MIR JSON v1 via provider env.mirbuilder.emit (dev)
+# Produces a minimal v1 program that returns 42.
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
+source "$ROOT/tools/smokes/v2/lib/test_runner.sh" 2>/dev/null || true
+
+# Build Program(JSON v0) inline (version:0, kind:"Program")
+prog_json=$(cat <<'JSON'
+{
+  "version": 0,
+  "kind": "Program",
+  "body": [
+    { "type": "Return", "expr": { "type": "Int", "value": 42 } }
+  ]
+}
+JSON
+)
+
+code=$(cat <<'HCODE'
+static box Main { method main(args) {
+  local p = env.get("NYASH_PROGRAM_JSON")
+  // 直接 hostbridge.extern_invoke を呼び出して v1 JSON を取得
+  local out = hostbridge.extern_invoke("env.mirbuilder", "emit", p)
+  print("" + out)
+  return 0
+} }
+HCODE
+)
+
+# Run via Rust VM (dev flags similar to test_runner)
+NYASH_PROGRAM_JSON="$prog_json" \
+NYASH_JSON_SCHEMA_V1=1 \
+NYASH_USING_AST=1 NYASH_DISABLE_NY_COMPILER=1 HAKO_DISABLE_NY_COMPILER=1 \
+NYASH_PARSER_STAGE3=1 HAKO_PARSER_STAGE3=1 NYASH_PARSER_ALLOW_SEMICOLON=1 \
+run_nyash_vm -c "$code" 2>/dev/null | tr -d '\r'