Fix logo/favicon upload, badge colors, and page title issues

Issue 1 - Logo/Favicon Upload:
- Add preview before upload (user must confirm)
- Show selected file preview with confirm/cancel buttons
- Fallback to current image if preview cancelled
- File size validation (2MB logo, 1MB favicon)
- Add STORAGE_RLS_FIX.sql for storage policy setup

Issue 2 - Badge Colors:
- Already implemented correctly in all files
- All "Lunas" badges use bg-brand-accent class
- Verified: OrderDetail, MemberOrders, Dashboard, MemberDashboard

Issue 3 - Page Title Error:
- Change .single() to .maybeSingle() in useBranding hook
- Handle error case gracefully with default branding
- Set default title even when platform_settings is empty
- This fixes the "JSON object requested, multiple (or no) rows returned" error

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/hooks/useBranding.tsx

@@ -50,16 +50,23 @@ export function BrandingProvider({ children }: { children: ReactNode }) {
     const { data, error } = await supabase
       .from('platform_settings')
       .select('*')
-      .single();
+      .maybeSingle();
+
+    if (error) {
+      console.error('Error fetching branding settings:', error);
+      // Keep default branding on error - still set title
+      document.title = defaultBranding.brand_name;
+      return;
+    }
 
     if (data) {
       let features = defaultBranding.homepage_features;
-      
+
       // Parse homepage_features if it's a string
       if (data.homepage_features) {
         try {
-          features = typeof data.homepage_features === 'string' 
-            ? JSON.parse(data.homepage_features) 
+          features = typeof data.homepage_features === 'string'
+            ? JSON.parse(data.homepage_features)
             : data.homepage_features;
         } catch (e) {
           console.error('Error parsing homepage_features:', e);
@@ -94,6 +101,9 @@ export function BrandingProvider({ children }: { children: ReactNode }) {
       if (data.brand_name) {
         document.title = data.brand_name;
       }
+    } else {
+      // No data found - use defaults and set title
+      document.title = defaultBranding.brand_name;
     }
   };