chore(setup): build setup-sourcebot before running its tests

The tests import compiled output from dist/, which is gitignored, so
`yarn test` failed on a fresh checkout with ERR_MODULE_NOT_FOUND.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: brendan-kellam

packages/setupWizard/package.json

@@ -14,7 +14,7 @@
         "watch": "tsc --watch",
         "dev": "tsx src/index.ts",
         "prepublishOnly": "yarn build",
-        "test": "node --test tests/unit/*.test.mjs tests/integration/*.test.mjs",
+        "test": "yarn build && node --test tests/unit/*.test.mjs tests/integration/*.test.mjs",
         "test:e2e": "node --test --test-concurrency=1 tests/e2e/*.test.mjs",
         "test:platform": "node --test tests/e2e/platform.test.mjs",
         "test:linux": "node tests/e2e/linux.mjs",