fix: pass through server data in +layout.ts for Navigation props

The universal load function (+layout.ts) was only returning { queryClient }
without passing through the server data from +layout.server.ts. This caused
Navigation component to not receive the account and currentUser props,
resulting in the avatar and username not displaying even when authenticated.

Root cause:
- +layout.server.ts correctly returned account, currentUser, isAuthenticated
- +layout.ts received this data but only returned queryClient
- +layout.svelte tried to access data.account and data.currentUser but they
  were undefined because +layout.ts didn't pass them through

Fix:
- Added ...data spread to +layout.ts return statement to pass through all
  server data along with queryClient
- Removed debug logging from Navigation.svelte and +layout.server.ts

Result:
- Navigation now correctly receives account and currentUser props
- User avatar and username display properly when authenticated
- isAuth derived from authStore remains reactive

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/routes/+layout.server.ts

@@ -12,24 +12,6 @@ export const load: LayoutServerLoad = async ({ locals }) => {
 	const currentUser = locals.session.user ?? null
 	const isAuthenticated = locals.session.isAuthenticated
 
-	// Debug logging for auth data
-	if (locals.auth) {
-		console.log('[+layout.server] Auth data being passed to client:', {
-			hasToken: !!locals.auth.accessToken,
-			hasUser: !!locals.auth.user,
-			hasExpiresAt: !!locals.auth.expiresAt
-		})
-	}
-
-	// Debug logging for Navigation props
-	console.log('[+layout.server] Navigation props:', {
-		hasAccount: !!account,
-		account,
-		hasCurrentUser: !!currentUser,
-		currentUser,
-		isAuthenticated
-	})
-
 	return {
 		isAuthenticated,
 		account,

src/routes/+layout.ts

@@ -41,5 +41,9 @@ export const load: LayoutLoad = async ({ data }) => {
 		}
 	})
 
-	return { queryClient }
+	// Pass through server data (account, currentUser, etc.) along with queryClient
+	return {
+		...data,
+		queryClient
+	}
 }