📝 Rewrite README for better developer experience

Reframed the value proposition: this is a curated collection of battle-tested
AI coding tools, not just "AI learns your conventions." New problem statement
focuses on the real pain - AI tools are powerful but raw, and building good
workflows takes experimentation.

Restructured for scannability: two clear Quick Start paths, "Try This First"
section, summary table instead of exhaustive lists, architecture diagram
moved up. Cut from 361 to 223 lines while keeping the important content.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Nick Sullivan