Initial TrueGrowth source import

scripts/start-funclip-runtime.mjs

@@ -0,0 +1,71 @@
+import { spawn } from 'node:child_process';
+import fs from 'node:fs';
+import http from 'node:http';
+import path from 'node:path';
+
+const vendorDir = path.resolve('vendor/funclip');
+const entryFile = path.join(vendorDir, 'funclip', 'launch.py');
+const projectVenvPython = path.resolve('.venv-funclip/bin/python');
+const pythonCommand =
+  process.env.TRUEGROWTH_FUNCLIP_PYTHON ||
+  (fs.existsSync(projectVenvPython) ? projectVenvPython : 'python3');
+const port = process.env.TRUEGROWTH_FUNCLIP_PORT || '7860';
+const lang = process.env.TRUEGROWTH_FUNCLIP_LANG || 'zh';
+const serviceUrl = `http://127.0.0.1:${port}`;
+
+function probeFunClip() {
+  return new Promise((resolve) => {
+    const request = http.get(serviceUrl, (response) => {
+      response.resume();
+      resolve(response.statusCode ? response.statusCode < 500 : true);
+    });
+    request.setTimeout(1600, () => {
+      request.destroy();
+      resolve(false);
+    });
+    request.on('error', () => resolve(false));
+  });
+}
+
+function waitUntilStopped() {
+  return new Promise((resolve) => {
+    const timer = setInterval(() => undefined, 60_000);
+    const stop = () => {
+      clearInterval(timer);
+      resolve();
+    };
+    process.once('SIGINT', stop);
+    process.once('SIGTERM', stop);
+  });
+}
+
+if (!fs.existsSync(entryFile)) {
+  console.error(`FunClip launch.py not found: ${entryFile}`);
+  process.exit(1);
+}
+
+if (await probeFunClip()) {
+  console.log(
+    `FunClip already running at ${serviceUrl}; reusing existing service.`
+  );
+  await waitUntilStopped();
+}
+
+const child = spawn(
+  pythonCommand,
+  ['funclip/launch.py', '--port', port, '--lang', lang],
+  {
+    cwd: vendorDir,
+    stdio: 'inherit',
+  }
+);
+
+const shutdown = () => {
+  if (!child.killed) {
+    child.kill('SIGTERM');
+  }
+};
+
+process.on('SIGINT', shutdown);
+process.on('SIGTERM', shutdown);
+child.on('exit', (code) => process.exit(code ?? 0));