Successfully implemented markdown rendering for descriptions and comments. **Implementation Details:** - Added marked.js (v11.1.1) and DOMPurify (v3.0.8) libraries in base.html - Created renderMarkdown() and renderAllMarkdown() JavaScript functions - Applied markdown-content class to comment bodies across all templates - Configured for GitHub Flavored Markdown with breaks support - Sanitized HTML to prevent XSS attacks **Files Modified:** - server/templates/base.html - Added markdown libraries, CSS, and rendering functions - server/templates/issue_detail.html - Applied markdown-content class to comments - server/templates/modals/issue_detail.html - Applied to comments and worklogs - server/templates/project_detail.html - Applied to comments - server/templates/modals/project_detail.html - Applied to comments - server/templates/milestone_detail.html - Applied to comments - server/templates/modals/milestone_detail.html - Applied to comments **Testing:** - All 1165 tests passed - Deployed to trckr.roboalch.com successfully - Verified with chrome-devtools - markdown rendering works correctly for headings, bold, italic, code blocks, links, and blockquotes **Edge Cases Handled:** - Re-rendering after HTMX swaps (htmx:afterSwap event) - Re-rendering after comment edits - XSS prevention via DOMPurify whitelist - Avoiding double-rendering with markdownRendered flag