Add pagination for comments in post content

Claude devrequested to merge
fix/comment-pagination into develop

Summary

  • Implements client-side pagination for comments on post pages
  • Limits display to 50 comments per page to improve performance on posts with many comments
  • Groups main comments (direct replies) with their nested replies on the same page
  • Adds Previous/Next buttons and page number navigation with ellipses for many pages

Changes

  • Added paginatedDiscussionState memo that:
    • Builds a parent-child comment map for efficient lookup
    • Groups main comments with their nested replies
    • Paginates with a maximum of 50 comments per page
    • Always includes the main post on every page
  • Added page navigation UI with Previous/Next buttons and numbered pages
  • Resets pagination to page 1 when navigating to a different post

Test plan

  • Open a post with many comments (50+) and verify pagination appears
  • Navigate between pages and confirm comments change correctly
  • Verify nested comment threads stay together on the same page
  • Test sorting options work correctly with pagination
  • Navigate to different posts and verify pagination resets to page 1

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