fix: address security vulnerabilities and add image attachments

- Fix type confusion vulnerability in comment content updates
- Validate pagination offsets to prevent negative values
- Validate timestamp is a valid number before parsing
- Exclude guestEmail from comment API responses for privacy
- Fix TypeScript error in audio upload route
- Add image attachment support for comments with upload API
- Update admin dashboard to track image attachments
- Rename cleanup functions to handle both voice and image media

app/api/admin/stats/route.ts

@@ -17,6 +17,7 @@ export async function GET() {
             totalVideos,
             totalComments,
             totalVoiceComments,
+            totalImageComments,
         ] = await Promise.all([
             db.user.count(),
             db.project.count(),
@@ -28,6 +29,13 @@ export async function GET() {
                         not: null,
                     }
                 }
+            }),
+            db.comment.count({
+                where: {
+                    imageUrl: {
+                        not: null,
+                    }
+                }
             })
         ]);
 
@@ -40,6 +48,7 @@ export async function GET() {
             totalVideos,
             totalComments,
             totalVoiceComments,
+            totalImageComments,
             totalStorageBytes,
         });
     } catch (error) {