Convert README from reStructuredText to Markdown

[jaredmixpanel]

Summary

• Converted README.rst to README.md for better GitHub rendering and compatibility
• Preserved all original content, links, and structure
• Added proper markdown syntax highlighting for code blocks

Changes

• Deleted README.rst
• Created README.md with equivalent content
• Updated badges to use markdown syntax
• Converted code blocks to use markdown fenced code blocks with Python syntax highlighting
• Converted reference-style links to inline markdown links
• Added DeepWiki badge for additional documentation support

Test plan

• Verify all links work correctly
• Confirm badges display properly
• Check code blocks render with syntax highlighting
• Ensure all original content is preserved

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.28%. Comparing base (7d93632) to head (fb398ef).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #151   +/-   ##
=======================================
  Coverage   94.28%   94.28%           
=======================================
  Files           9        9           
  Lines        1557     1557           
  Branches      101      101           
=======================================
  Hits         1468     1468           
  Misses         54       54           
  Partials       35       35           

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