feat: add mybot CLI with update, chat, and Claude project config

- Click entrypoint: mybot update (make install / pip -e), mybot chat (claude in repo)
- Optional --dangerously-skip-permissions for Claude Code
- Makefile install; hatchling package layout
- .gitignore: venv, build artifacts, workspace (local symlinks)

Made-with: Cursor

.gitignore

@@ -0,0 +1,7 @@
+.venv/
+__pycache__/
+*.py[cod]
+*.egg-info/
+dist/
+build/
+workspace/