Yaw Mode for Claude Code

Yaw Mode extends Claude Code's ~/.claude/ as a session-level overlay without overwriting it.

• It layers CLAUDE.md, skills, permissions, OAuth credentials, and session history onto a separate temporary overlay, then removes it on exit.
• In Augment mode, it keeps the user's existing ~/.claude/ intact while adding Yaw's rules and skills.
• In Fresh mode, it excludes user settings and applies only the Yaw bundle to create a reproducible base environment.
• CLAUDE.md merges in rule files such as agent-setup, code-quality, deploy, git, npm, and testing.
• It provides curated skills such as implement, review, ship-ready, coverage, full-pass, and simplify.
• Each session points CLAUDE_CONFIG_DIR to the overlay, while conversation history is written directly to the actual home directory to preserve --resume behavior.
• On teardown, junctions/symlinks are unlinked first to prevent history corruption, and tests also cover .claude.json backup, concurrent-run merging, and ghost entry cleanup.

Augment/Fresh can be toggled on in the settings panel, applying from new sessions onward while existing sessions remain unaffected.