fix: address PR review findings

- Revert undici to v7.27.1 (v8 blocked by #5467 qBittorrent regression)
- Broaden cache invalidation to utils.integration.invalidate() (covers
  all integration queries, not just integration.all)
- Add invalidation to onboarding integration create path
- Harden renovate test to assert allowBuilds key exists
- Remove deprecated Vitest 4 poolOptions config
- Fix CSS typo in docs menu transition (0.s → 0.5s)
- Update renovate.json5 comment to reference allowBuilds

test/renovate.spec.ts

@@ -8,7 +8,10 @@ describe("Renovate configuration tests", () => {
   test("automerge should be disabled for allowBuilds dependencies", async () => {
     const workspaceYaml = await fs.readFile(join(__dirname, "../pnpm-workspace.yaml"), "utf-8").then(parse);
     const renovateConfig = await fs.readFile(join(__dirname, "../.github/renovate.json5"), "utf-8").then(json5.parse);
-    const allowedBuilds = Object.entries(workspaceYaml.allowBuilds ?? {})
+    if (!workspaceYaml.allowBuilds || typeof workspaceYaml.allowBuilds !== "object") {
+      throw new Error("pnpm-workspace.yaml must define allowBuilds as an object");
+    }
+    const allowedBuilds = Object.entries(workspaceYaml.allowBuilds)
       .filter(([, allowed]) => allowed === true)
       .map(([name]) => name);
     const automergeDisabledDeps = renovateConfig.packageRules