refactor: update UI styles to use new header background color

- Changed background color for various select elements and containers in Users.vue and Videos.vue to use 'bg-header'.
- Updated background color for status and role filters in the admin section.
- Adjusted background colors in Home.vue, QuickActions.vue, and other components to enhance UI consistency.
- Refactored Billing.vue and DomainsDns.vue to align with new design standards.
- Modified settings components to utilize new header color for better visual hierarchy.
- Improved accessibility and visual feedback in the SettingsRow and SettingsSectionCard components.
- Updated authentication middleware to include timestamp cookie for session management.
- Enhanced gRPC client to build internal metadata for service calls.

src/server/services/grpcClient.ts

@@ -79,7 +79,7 @@ const buildForwardMetadataFromHeaders = (headers: Headers): Metadata => {
   return metadata;
 };
 
-const buildInternalMetadata = () => {
+export const buildInternalMetadata = () => {
   const context = tryGetContext();
   const metadata = context ? buildForwardMetadataFromHeaders(context.req.raw.headers) : new Metadata();
   const marker = process.env.STREAM_INTERNAL_AUTH_MARKER;