chore: import upstream snapshot with attribution

examples/environments/scripts/create-snapshot.ts

@@ -0,0 +1,54 @@
+/**
+ * Create a Vercel Sandbox snapshot with agent-browser + Chromium pre-installed.
+ *
+ * Run once:   npx tsx scripts/create-snapshot.ts
+ * Then set:   AGENT_BROWSER_SNAPSHOT_ID=<output id>
+ *
+ * Authentication (one of):
+ *   - VERCEL_TOKEN + VERCEL_TEAM_ID + VERCEL_PROJECT_ID
+ *   - VERCEL_OIDC_TOKEN (automatically available on Vercel deployments)
+ *
+ * This makes sandbox creation sub-second instead of ~30s.
+ */
+
+import "dotenv/config";
+import { createSnapshot, getSandboxCredentials } from "../lib/agent-browser-sandbox";
+
+const hasExplicitCreds = !!(
+  process.env.VERCEL_TOKEN &&
+  process.env.VERCEL_TEAM_ID &&
+  process.env.VERCEL_PROJECT_ID
+);
+const hasOidc = !!process.env.VERCEL_OIDC_TOKEN;
+
+if (!hasExplicitCreds && !hasOidc) {
+  console.error(
+    "Missing sandbox credentials. Provide either:\n" +
+      "  1. VERCEL_TOKEN + VERCEL_TEAM_ID + VERCEL_PROJECT_ID\n" +
+      "  2. VERCEL_OIDC_TOKEN",
+  );
+  process.exit(1);
+}
+
+const creds = getSandboxCredentials();
+console.log(
+  creds.token
+    ? `Authenticating with explicit credentials (team: ${creds.teamId})`
+    : "Authenticating via VERCEL_OIDC_TOKEN",
+);
+
+async function main() {
+  console.log("Creating Vercel Sandbox with agent-browser + Chromium...");
+  console.log("This takes ~30-60 seconds on first run.\n");
+
+  const snapshotId = await createSnapshot();
+
+  console.log("\nSnapshot created successfully!");
+  console.log(`\n  AGENT_BROWSER_SNAPSHOT_ID=${snapshotId}\n`);
+  console.log("Add this to your .env.local or Vercel environment variables.");
+}
+
+main().catch((err) => {
+  console.error("Failed to create snapshot:", err.message || err);
+  process.exit(1);
+});