Dotfiles for my macos setup

:wrench: update agent provider, tools, and configuration master

- Migrate Pi agent from custom binary to registry-based pi-acp - Switch Pi agent to Anthropic/Claude Opus 4.6, adjust settings - Remove pipx, add new dev tools (gcloud-cli, vlc, gosec) - Add Google Workspace CLI and uv packages (ansible, nginx-ls) - Consolidate Pi package management configuration