4 hacks
When Claude repeats a project gotcha, end your prompt with an instruction to write a CLAUDE.md rule so it never happens again.
Put a single `@AGENTS.md` import in CLAUDE.md so Claude Code and other agent tools share the same project instructions without symlink confusion.
Check in project settings so every teammate gets the same allow/deny rules, hooks, and env defaults without redoing /permissions.
Keep personal shortcuts and machine-specific notes in CLAUDE.local.md (gitignored) instead of polluting the shared CLAUDE.md.