[QA PASSED] Verified as duplicate of TRCKR-655. All 6 E2E tests exist in master (commit 3222808, merged 2025-12-23). Tests are structurally valid and pytest can collect them. No implementation needed. See /tmp/qa-TRCKR-525.md for full verification report.

This issue appears to be a duplicate of TRCKR-655, which was already completed and merged to master via commit 3222808. **Existing test file:** tests/e2e/test_comment_delete.py (411 lines) **Tests already in master:** 1. test_delete_comment_shows_confirmation_dialog - Verifies clicking delete shows a confirmation dialog 2. test_delete_comment_confirmation_exact_message - Verifies exact dialog message 'Delete this comment?' 3. test_delete_comment_cancel_preserves_comment - Verifies canceling keeps the comment 4. test_delete_comment_confirm_removes_comment - Verifies confirming actually deletes from UI and API 5. test_delete_comment_updates_count - Tests comment count updates after deletion 6. test_delete_multiple_comments_independently - Tests deleting one comment doesn't affect others **Verification:** All tests are in master branch and structurally valid. No additional work needed. Marking as in-review for QA verification that this is indeed a duplicate.