feat(admin): add danger zone buttons for resetting ratings and activations

- Added reset all user ratings button to admin danger zone
- Added reset all activations button to admin danger zone
- Created API endpoints: /api/admin/reset-ratings and /api/admin/reset-activations
- Removed old non-localized routes: /app/admin, /app/curator
- Removed unused page.module.css
- All admin functionality now uses localized routes (/[locale]/admin)

app/api/admin/reset-ratings/route.ts

@@ -0,0 +1,28 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { PrismaClient } from '@prisma/client';
+
+const prisma = new PrismaClient();
+
+export async function POST(req: NextRequest) {
+    try {
+        // Reset all song ratings to 0
+        const result = await prisma.song.updateMany({
+            data: {
+                averageRating: 0,
+                ratingCount: 0,
+            },
+        });
+
+        return NextResponse.json({
+            success: true,
+            message: `Successfully reset ratings for ${result.count} songs`,
+            count: result.count,
+        });
+    } catch (error) {
+        console.error('Error resetting ratings:', error);
+        return NextResponse.json(
+            { error: 'Failed to reset ratings' },
+            { status: 500 }
+        );
+    }
+}