fix(playground): use direct esbuild dependency instead of reaching into secure-exec node_modules

Author: NathanFlurry

packages/playground/package.json

@@ -15,6 +15,7 @@
     "secure-exec": "workspace:*"
   },
   "devDependencies": {
+    "esbuild": "^0.27.1",
     "monaco-editor": "0.52.2",
     "pyodide": "0.28.3",
     "typescript": "5.9.3"

packages/playground/scripts/build-worker.ts

@@ -1,7 +1,7 @@
 import { readFile, writeFile } from "node:fs/promises";
 import { dirname, resolve } from "node:path";
 import { fileURLToPath } from "node:url";
-import { build } from "../../secure-exec/node_modules/esbuild/lib/main.js";
+import { build } from "esbuild";
 
 const playgroundDir = resolve(fileURLToPath(new URL("..", import.meta.url)));
 const workerSourcePath = resolve(playgroundDir, "../secure-exec/src/browser/worker.ts");