fix(test): build lib before running app tests

CI test job runs `pnpm test` without building @effect-template/lib, but the package exports types from dist. Add `pretest` to build lib so lint:tests + vitest can resolve imports.

Author: codex

packages/app/package.json

@@ -22,6 +22,7 @@
     "list": "pnpm -C ../.. run list",
     "prestart": "pnpm run build",
     "start": "node dist/main.js",
+    "pretest": "pnpm -C ../lib build",
     "test": "pnpm run lint:tests && vitest run",
     "pretypecheck": "pnpm -C ../lib build",
     "typecheck": "tsc --noEmit"