feat: implement comment reporting system

Added comprehensive comment reporting infrastructure similar to profile reporting.

API Changes:
- New CommentReport model in Prisma schema with relations to User and Comment
- CommentReportService with CRUD operations, duplicate prevention, and rate limiting
- API routes at /comment-reports for creating and managing comment reports
- Updated CommentService to include hasPendingReports flag for all comments

Frontend Changes:
- Created shared CommentDisplayComponent for reusable comment display with report button
- Updated ReportModalComponent to handle both profile and comment reports
- CommentReportService for API communication
- Integrated CommentDisplayComponent into games-list component
- Comments with pending reports show "[comment pending admin review]" message

Features:
- Users can report comments they didn't write
- Duplicate prevention (one pending report per comment per user)
- Rate limiting (5 pending reports maximum per user)
- Admins can review and action comment reports
- Comments are hidden during review to prevent abuse

Remaining Work:
- Need to integrate CommentDisplayComponent into remaining media components (books, music, art, shows, manga)
- Need to extend admin-reports page to display comment reports alongside profile reports

api/prisma/schema.prisma

@@ -205,33 +205,36 @@ model User {
   suggestions      Suggestion[]
   likes            Like[]
   refreshTokens    RefreshToken[]
-  reportsMade      ProfileReport[] @relation("Reporter")
-  reportsReceived  ProfileReport[] @relation("ReportedUser")
-  reportsReviewed  ProfileReport[] @relation("Reviewer")
+  reportsMade           ProfileReport[] @relation("Reporter")
+  reportsReceived       ProfileReport[] @relation("ReportedUser")
+  reportsReviewed       ProfileReport[] @relation("Reviewer")
+  commentReportsMade    CommentReport[] @relation("CommentReporter")
+  commentReportsReviewed CommentReport[] @relation("CommentReviewer")
 
   @@index([slug], map: "User_slug_key")
 }
 
 model Comment {
-  id           String    @id @default(auto()) @map("_id") @db.ObjectId
+  id           String          @id @default(auto()) @map("_id") @db.ObjectId
   content      String
   rawContent   String?
-  userId       String    @db.ObjectId
-  user         User      @relation(fields: [userId], references: [id])
-  gameId       String?   @db.ObjectId
-  game         Game?     @relation(fields: [gameId], references: [id])
-  bookId       String?   @db.ObjectId
-  book         Book?     @relation(fields: [bookId], references: [id])
-  musicId      String?   @db.ObjectId
-  music        Music?    @relation(fields: [musicId], references: [id])
-  artId        String?   @db.ObjectId
-  art          Art?      @relation(fields: [artId], references: [id])
-  showId       String?   @db.ObjectId
-  show         Show?     @relation(fields: [showId], references: [id])
-  mangaId      String?   @db.ObjectId
-  manga        Manga?    @relation(fields: [mangaId], references: [id])
-  createdAt    DateTime  @default(now())
-  updatedAt    DateTime  @updatedAt
+  userId       String          @db.ObjectId
+  user         User            @relation(fields: [userId], references: [id])
+  gameId       String?         @db.ObjectId
+  game         Game?           @relation(fields: [gameId], references: [id])
+  bookId       String?         @db.ObjectId
+  book         Book?           @relation(fields: [bookId], references: [id])
+  musicId      String?         @db.ObjectId
+  music        Music?          @relation(fields: [musicId], references: [id])
+  artId        String?         @db.ObjectId
+  art          Art?            @relation(fields: [artId], references: [id])
+  showId       String?         @db.ObjectId
+  show         Show?           @relation(fields: [showId], references: [id])
+  mangaId      String?         @db.ObjectId
+  manga        Manga?          @relation(fields: [mangaId], references: [id])
+  reports      CommentReport[]
+  createdAt    DateTime        @default(now())
+  updatedAt    DateTime        @updatedAt
 }
 
 model AuditLog {
@@ -369,3 +372,23 @@ model ProfileReport {
   @@index([reporterId])
   @@index([status])
 }
+
+model CommentReport {
+  id              String        @id @default(auto()) @map("_id") @db.ObjectId
+  reportedCommentId String      @db.ObjectId
+  reportedComment Comment       @relation(fields: [reportedCommentId], references: [id])
+  reporterId      String        @db.ObjectId
+  reporter        User          @relation("CommentReporter", fields: [reporterId], references: [id])
+  reason          ReportReason
+  details         String
+  status          ReportStatus  @default(PENDING)
+  reviewedBy      String?       @db.ObjectId
+  reviewer        User?         @relation("CommentReviewer", fields: [reviewedBy], references: [id])
+  reviewNotes     String?
+  createdAt       DateTime      @default(now())
+  updatedAt       DateTime      @updatedAt
+
+  @@index([reportedCommentId])
+  @@index([reporterId])
+  @@index([status])
+}