feat: add in-app Sync Skills button and simplify START_APP.bat launcher

scripts/run-python.js

@@ -0,0 +1,90 @@
+#!/usr/bin/env node
+
+'use strict';
+
+const { spawn, spawnSync } = require('node:child_process');
+
+const args = process.argv.slice(2);
+
+if (args.length === 0) {
+  console.error('Usage: node scripts/run-python.js <script.py> [args...]');
+  process.exit(1);
+}
+
+function uniqueCandidates(candidates) {
+  const seen = new Set();
+  const unique = [];
+
+  for (const candidate of candidates) {
+    const key = candidate.join('\u0000');
+    if (!seen.has(key)) {
+      seen.add(key);
+      unique.push(candidate);
+    }
+  }
+
+  return unique;
+}
+
+function getPythonCandidates() {
+  // Optional override for CI/local pinning without editing scripts.
+  const configuredPython =
+    process.env.ANTIGRAVITY_PYTHON || process.env.npm_config_python;
+  const candidates = [
+    configuredPython ? [configuredPython] : null,
+    // Keep this ordered list easy to update if project requirements change.
+    ['python3'],
+    ['python'],
+    ['py', '-3'],
+  ].filter(Boolean);
+
+  return uniqueCandidates(candidates);
+}
+
+function canRun(candidate) {
+  const [command, ...baseArgs] = candidate;
+  const probe = spawnSync(
+    command,
+    [...baseArgs, '-c', 'import sys; raise SystemExit(0 if sys.version_info[0] == 3 else 1)'],
+    {
+      stdio: 'ignore',
+      shell: false,
+    },
+  );
+
+  return probe.error == null && probe.status === 0;
+}
+
+const pythonCandidates = getPythonCandidates();
+const selected = pythonCandidates.find(canRun);
+
+if (!selected) {
+  console.error(
+    'Unable to find a Python 3 interpreter. Tried: python3, python, py -3',
+  );
+  process.exit(1);
+}
+
+const [command, ...baseArgs] = selected;
+const child = spawn(command, [...baseArgs, ...args], {
+  stdio: 'inherit',
+  shell: false,
+});
+
+child.on('error', (error) => {
+  console.error(`Failed to start Python interpreter "${command}": ${error.message}`);
+  process.exit(1);
+});
+
+child.on('exit', (code, signal) => {
+  if (signal) {
+    try {
+      process.kill(process.pid, signal);
+    } catch {
+      process.exit(1);
+    }
+    return;
+  }
+
+  process.exit(code ?? 1);
+});