Fix Markdown Formatting

• Actions Taken:
  • Replaced direct calls to marked() in src/morpheum-bot/index.ts with the centralized formatMarkdown() function.
  • This ensures that all markdown formatting correctly renders GFM task lists.
• Friction/Success Points:
  • The previous developer (gpt-oss) had correctly added the formatMarkdown function but failed to actually use it, leaving the fix incomplete. This required a final step to actually apply the fix.

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