diff --git a/apps/blog-platform/lib/source.ts b/apps/blog-platform/lib/source.ts
index 14e2b36..2acf2da 100644
--- a/apps/blog-platform/lib/source.ts
+++ b/apps/blog-platform/lib/source.ts
@@ -1,9 +1,12 @@
 import { loader } from "fumadocs-core/source";
+import type { PageData } from "fumadocs-core/source";
 import { toFumadocsSource } from "fumadocs-mdx/runtime/server";
 
-import { blogPosts } from "collections/server";
+import { blogPosts } from "../.source/server";
+
+type BlogPostPage = (typeof blogPosts)[number] & PageData;
 
 export const blog = loader({
   baseUrl: "/",
-  source: toFumadocsSource(blogPosts, []),
+  source: toFumadocsSource<BlogPostPage, never>(blogPosts as BlogPostPage[], []),
 });
diff --git a/apps/docs-platform/content/docs/contributing/index.mdx b/apps/docs-platform/content/docs/contributing/index.mdx
index cde2209..8ded844 100644
--- a/apps/docs-platform/content/docs/contributing/index.mdx
+++ b/apps/docs-platform/content/docs/contributing/index.mdx
@@ -81,6 +81,7 @@ Your branch name should start with one of the following prefixes based on the wo
 ### Pre-commit Quality Verification
 
 Before committing and pushing your changes, run automated scripts to ensure style guides and formats are preserved:
+
 ```bash
 # Run typescript compilation and linter
 npm run lint
diff --git a/apps/studio/app/(main)/(dashboard)/settings/components/SyncSection.tsx b/apps/studio/app/(main)/(dashboard)/settings/components/SyncSection.tsx
index 0c6ee4a..20aee2d 100644
--- a/apps/studio/app/(main)/(dashboard)/settings/components/SyncSection.tsx
+++ b/apps/studio/app/(main)/(dashboard)/settings/components/SyncSection.tsx
@@ -17,6 +17,7 @@ import {
   loadWorkspaceSettingsFromLocalStorage,
 } from "@/features/documents/services/workspace-settings";
 import { setAllResumesSyncEnabled } from "@/features/resume/services/resume-service";
+import { useUserStore } from "@/store/useUserStore";
 
 interface TelemetryState {
   lastAttemptAt: string | null;
@@ -26,6 +27,7 @@ interface TelemetryState {
 export default function SyncSection() {
   const [loading, setLoading] = useState(false);
   const [autoSync, setAutoSync] = useState(false);
+  const isLoggedIn = useUserStore((state) => state.isLoggedIn);
 
   const [telemetry, setTelemetry] = useState<TelemetryState>({
     lastAttemptAt: null,
@@ -56,6 +58,11 @@ export default function SyncSection() {
   }, []);
 
   const handleToggle = async (checked: boolean) => {
+    if (!isLoggedIn) {
+      setAutoSync(false);
+      return;
+    }
+
     setAutoSync(checked);
     setAutoSyncEnabledInLocalStorage(checked);
     setAllResumesSyncEnabled(checked);
@@ -67,6 +74,8 @@ export default function SyncSection() {
     }
   };
 
+  const displayedAutoSync = isLoggedIn && autoSync;
+
   return (
     <section className="space-y-6">
       <div className="border-border/60 flex items-end justify-between border-b pb-4">
@@ -75,7 +84,11 @@ export default function SyncSection() {
             <CloudSync className="text-accent h-5 w-5" /> Cloud & Data
           </h2>
 
-          <p className="text-muted-foreground text-sm">Manage background synchronization.</p>
+          <p className="text-muted-foreground text-sm">
+            {isLoggedIn
+              ? "Manage background synchronization."
+              : "Sign in to enable background synchronization."}
+          </p>
         </div>
 
         <div className="border-border/40 flex items-center gap-3 rounded-full border bg-zinc-500/5 p-2 px-4">
@@ -83,7 +96,11 @@ export default function SyncSection() {
             Auto-Sync
           </span>
 
-          <Switch checked={autoSync} onCheckedChange={handleToggle} disabled={loading} />
+          <Switch
+            checked={displayedAutoSync}
+            onCheckedChange={handleToggle}
+            disabled={loading || !isLoggedIn}
+          />
         </div>
       </div>
 
diff --git a/apps/studio/tests/contracts/sync-section.contract.test.tsx b/apps/studio/tests/contracts/sync-section.contract.test.tsx
new file mode 100644
index 0000000..7ec280a
--- /dev/null
+++ b/apps/studio/tests/contracts/sync-section.contract.test.tsx
@@ -0,0 +1,58 @@
+import { renderToStaticMarkup } from "react-dom/server";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import SyncSection from "@/app/(main)/(dashboard)/settings/components/SyncSection";
+
+type MockUserState = {
+  user: { id: string; email: string; name?: string } | null;
+  loading: boolean;
+  isLoggedIn: boolean;
+};
+
+const mockUserState = vi.hoisted(() => ({
+  current: {
+    user: null,
+    loading: false,
+    isLoggedIn: false,
+  } as MockUserState,
+}));
+
+vi.mock("next/font/google", () => ({
+  Geist: () => ({ variable: "--font-geist-sans" }),
+  Geist_Mono: () => ({ variable: "--font-geist-mono" }),
+}));
+
+vi.mock("@/store/useUserStore", () => ({
+  useUserStore: (selector: (state: MockUserState) => unknown) => selector(mockUserState.current),
+}));
+
+describe("sync settings contract", () => {
+  beforeEach(() => {
+    mockUserState.current = {
+      user: null,
+      loading: false,
+      isLoggedIn: false,
+    };
+  });
+
+  it("disables auto sync while the user is logged out", () => {
+    const html = renderToStaticMarkup(<SyncSection />);
+
+    expect(html).toContain("Sign in to enable background synchronization.");
+    expect(html).toMatch(/<input[^>]*type="checkbox"[^>]*disabled/);
+    expect(html).not.toMatch(/<input[^>]*type="checkbox"[^>]*checked/);
+  });
+
+  it("keeps the auto sync control available while the user is logged in", () => {
+    mockUserState.current = {
+      user: { id: "user-1", email: "user@example.com", name: "User" },
+      loading: false,
+      isLoggedIn: true,
+    };
+
+    const html = renderToStaticMarkup(<SyncSection />);
+
+    expect(html).toContain("Manage background synchronization.");
+    expect(html).not.toMatch(/<input[^>]*type="checkbox"[^>]*disabled/);
+  });
+});
diff --git a/packages/ui/README.md b/packages/ui/README.md
index 3bc5d03..dde9176 100644
--- a/packages/ui/README.md
+++ b/packages/ui/README.md
@@ -88,9 +88,7 @@ import "@veriworkly/ui/styles/globals.css";
 export default function RootLayout({ children }: { children: React.ReactNode }) {
   return (
     <html lang="en" className={globalFontVariables}>
-      <body className="antialiased">
-        {children}
-      </body>
+      <body className="antialiased">{children}</body>
     </html>
   );
 }
@@ -100,16 +98,18 @@ export default function RootLayout({ children }: { children: React.ReactNode })
 
 ## 🎨 Theme & Styling System
 
-The library utilizes a dual-theme variable design configured for light and dark modes in `src/styles/themes.css`. 
+The library utilizes a dual-theme variable design configured for light and dark modes in `src/styles/themes.css`.
 
 ### Key Custom Theme Variables:
-* `--background` / `--color-fd-background`: Main application canvas color.
-* `--foreground` / `--color-fd-foreground`: Primary typography and element color.
-* `--card` / `--color-fd-card`: Card and modal background color.
-* `--border` / `--color-fd-border`: Soft divider and border color.
-* `--accent` / `--color-fd-primary`: Main brand color for action elements.
+
+- `--background` / `--color-fd-background`: Main application canvas color.
+- `--foreground` / `--color-fd-foreground`: Primary typography and element color.
+- `--card` / `--color-fd-card`: Card and modal background color.
+- `--border` / `--color-fd-border`: Soft divider and border color.
+- `--accent` / `--color-fd-primary`: Main brand color for action elements.
 
 ### CSS Usage Example:
+
 ```css
 .custom-component {
   background-color: var(--background);