- CLAUDE.md: product principles, crate layering, common commands, commits. - .claude/rules: common, Rust, frontend, Tauri IPC, docs and security rules. - .claude/skills: check, add-tauri-command, project-model-change, change-record, msix-integration-test, backlog-status. Refs #16 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>