Claude Code Configuration Patterns and Best Practices

Deep dives into CLAUDE.md (Garry Tan's 882-line, Karpathy's 4 lines), AGENTS.md vs CLAUDE.md (import pattern, symlink, pre-commit, SessionStart hook, direnv, CI drift detection), project setup blueprint (nine-step per-feature loop, coder/reviewer separation, living boards). New guides: context budget diagnostic for CLAUDE.md bloat, CLAUDE.md vs SKILL.md vs AGENTS.md comparison, SKILL.md creation with dynamic context injection, Plan Mode practical guide with Verdent integration, and five-scope config hierarchy with permission rules (73% adoption, 125+ settings, deny-wins conflict resolution).