docs: restructure repo, rename CLI references, polish README (#11)

docs: add chapters 21-25 completing the full book (Part 5 + appendix) (#10)

docs: add chapters 07-20 covering AI core, tools, agents, and engineering (#9)

docs: align plan.md with table of contents and fix inconsistencies (#8)

fix: apply review feedback to chapters 05 and 06 for accuracy (#7)

docs: add chapters 04-06 (system prompt, query loop, context management) (#6)

docs: add chapter 02 & 03 with review-driven corrections (#5)

docs: add chapter 02 (startup optimization) and chapter 03 (state management) (#4)

fix: apply review feedback to TOC structure and reading routes (#3)

fix: apply review feedback to improve accuracy of chapter 01 (#2)

docs: add initial book structure and first chapter for Claude Code source study (#1)

Initial commit