feat: improve deployment workflows

lib/context.ts

@@ -41,15 +41,16 @@ export function ctx() {
   return store;
 }
 
-const cache: Record<string, unknown> = {};
 export function createCachedGetter<T>(
-  key: string,
+  _key: string,
   fn: () => Promise<T>,
 ): () => Promise<T> {
-  return async () => {
-    if (key in cache) return cache[key] as T;
-    const result = await fn();
-    cache[key] = result;
-    return result;
+  let cached: Promise<T> | undefined;
+  return () => {
+    cached ??= fn().catch((error) => {
+      cached = undefined;
+      throw error;
+    });
+    return cached;
   };
 }