Day 26-28: Documentation Sprint

[pamelagilmour]

Timeline: Days X-Y

[Brief description of what this accomplishes]

Tasks:

• Write detailed ARCHITECTURE.md with diagrams
• Update README with setup instructions
• Add screenshots/GIFs to README
• Document DS&A decisions and trade-offs

Deliverable: [What you'll have when this is done]

Notes: [Optional - any helpful context]