feat: enhance project structure with server and workflow management

- Introduced a new server package with Fastify for handling API requests and workflows.
- Implemented user authentication and authorization with JWT and cookie management.
- Added endpoints for managing workflows, runs, and user accounts.
- Established a dashboard for monitoring workflow status and statistics.
- Included a script sandbox for executing user-defined scripts securely.
- Updated README with setup instructions and API documentation.
- Configured database migrations for user management.
- Enhanced logging capabilities for better traceability.

packages/server/workflow-parse.js

@@ -0,0 +1,15 @@
+export function parseScriptStep(step) {
+  if (typeof step === "string") return { script: step, config: null };
+  if (step?.script) return { script: step.script, config: step.config ?? null };
+  throw new Error(`Invalid script step: ${JSON.stringify(step)}`);
+}
+
+/**
+ * Resolve an HTTP path under the owner namespace: /notify -> /u/alice/notify
+ * @param {string} owner
+ * @param {string} triggerPath
+ */
+export function namespacedPath(owner, triggerPath) {
+  const cleaned = String(triggerPath).replace(/^\/+/, "");
+  return `/u/${owner}/${cleaned}`;
+}