feat: prepare self-contained open-source release

scripts/install-managed-packages.mjs

@@ -0,0 +1,48 @@
+import { spawnSync } from "node:child_process";
+import { existsSync, readFileSync } from "node:fs";
+import { join } from "node:path";
+import { agentDir, managedEnvironment, rootDir } from "./profile.mjs";
+
+const settings = JSON.parse(
+  readFileSync(join(rootDir, "config", "settings.default.json"), "utf8"),
+);
+const packages = Array.isArray(settings.packages) ? settings.packages : [];
+const cliPath = join(rootDir, "pi", "packages", "coding-agent", "dist", "cli.js");
+const env = managedEnvironment();
+
+function parseExactNpmSource(source) {
+  if (!source.startsWith("npm:")) return undefined;
+  const spec = source.slice(4);
+  const separator = spec.lastIndexOf("@");
+  if (separator <= 0) return undefined;
+  return { name: spec.slice(0, separator), version: spec.slice(separator + 1) };
+}
+
+function installedAtExpectedVersion(source) {
+  const parsed = parseExactNpmSource(source);
+  if (!parsed) return false;
+  const packageJson = join(agentDir, "npm", "node_modules", ...parsed.name.split("/"), "package.json");
+  if (!existsSync(packageJson)) return false;
+  try {
+    return JSON.parse(readFileSync(packageJson, "utf8")).version === parsed.version;
+  } catch {
+    return false;
+  }
+}
+
+for (const source of packages) {
+  if (typeof source !== "string" || !source.trim()) continue;
+  if (installedAtExpectedVersion(source)) {
+    console.log(`Managed package ready: ${source}`);
+    continue;
+  }
+
+  console.log(`Installing managed package: ${source}`);
+  const result = spawnSync(process.execPath, [cliPath, "install", source], {
+    cwd: rootDir,
+    env,
+    stdio: "inherit",
+  });
+  if (result.error) throw result.error;
+  if (result.status !== 0) process.exit(result.status ?? 1);
+}