Maintenance

[bniladridas]

Shipped from 9d93aea to c676261
Fixes:

• Fixed mypy type errors in review.py and tools.py
• Fixed Python 3.9 compatibility (from future import annotations)
• Fixed flaky e2e test (case-insensitive grep)
• Fixed info panel backticks display
  Features:
• Added syntax highlighting for code blocks in review output
• Added tests for _process_query function
  Cleanup:
• Removed pinned issue reference from README