chore: update bun.lock and fix ep-cli default API URL

Update lockfile for ep-cli v0.3.2 deps (@effect/cluster@0.56.4,
@effect/rpc@0.73.2). Fix default API URL to point to the correct
Vercel deployment.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: PaulJPhilp

bun.lock

@@ -13,7 +13,7 @@ import type {
   PatternSummary,
 } from "./api.js";
 
-const DEFAULT_API_BASE_URL = "https://effect-patterns-mcp.vercel.app";
+const DEFAULT_API_BASE_URL = "https://effect-patterns-mcp-server-buddybuilder.vercel.app";
 const DEFAULT_TIMEOUT_MS = 10_000;
 
 const resolveConfigPath = () => {