Update README.MD and add nano-claude-code v3.0 + original-source-code/src
- README.MD: add original-source-code and nano-claude-code sections, update
overview table (4 subprojects), add v3.0 news entry, expand comparison table
with memory/multi-agent/skills dimensions
- nano-claude-code v3.0: multi-agent package (multi_agent/), memory package
(memory/), skill package (skill/) with built-in /commit and /review skills,
context compression (compaction.py), tool registry plugin system, diff view,
17 slash commands, 18 built-in tools, 101 tests (~5000 lines total)
- original-source-code/src: add raw TypeScript source tree (1884 files)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>