feat(migration): migrate legacy owner data and update config reference handling

- Implemented a migration process to move resources from the legacy owner "default" to the new default owner "local", ensuring no data loss during the transition.
- Updated configuration reference handling to replace legacy `$VAR_`, `$SECRET_`, and `$CONTEXT_` prefixes with mustache-style `{{ vars.name }}`, `{{ secrets.name }}`, and `{{ context.name }}`.
- Enhanced YAML configuration files and scripts to reflect the new mustache syntax, improving consistency across the application.
- Added tests to validate the migration process and ensure proper handling of legacy references.
- Updated documentation to guide users on the new configuration reference format.

packages/server/workflow-http-routes.js

@@ -1,4 +1,4 @@
-import { HTTP_METHODS } from "@jerapah-flow/shared";
+import { HTTP_METHODS, DEFAULT_OWNER } from "@jerapah-flow/shared";
 import {
   checkAnyHttpAuth,
   resolveAuthMechanisms,
@@ -85,8 +85,14 @@ export function createHttpTriggerHandler({
   return async function dispatchHttpTrigger(req, reply) {
     const wildcard = /** @type {{ "*": string }} */ (req.params)["*"] ?? "";
     const url = `/u/${String(wildcard).replace(/^\/+/, "")}`;
+    // Compat: leftover webhooks still hitting /u/default/... after owner rename.
+    const compatUrl = url.startsWith("/u/default/")
+      ? `/u/${DEFAULT_OWNER}/${url.slice("/u/default/".length)}`
+      : url === "/u/default"
+        ? `/u/${DEFAULT_OWNER}`
+        : url;
     const method = String(req.method ?? "GET").toUpperCase();
-    const routeKey = `${method} ${url}`;
+    const routeKey = `${method} ${compatUrl}`;
     const mapped = httpRoutes.get(routeKey);
 
     if (!mapped) {
@@ -104,7 +110,7 @@ export function createHttpTriggerHandler({
         if (t?.type !== "HTTP") return false;
         const m = String(t.method ?? "POST").toUpperCase();
         const p = namespacedPath(entry.owner, t.path);
-        return m === method && p === url;
+        return m === method && p === compatUrl;
       }) ?? mapped.trigger;
 
     if (