Key changes:
- Changed default model from claude-sonnet-4.5 to gpt-4.1 (free tier compatible)
- Updated all Claude models to minPlan: 'pro' (requires paid Copilot subscription)
- Replaced 'localhost' with '127.0.0.1' for more reliable local connections
(bypasses DNS resolution and potential IPv6 issues)
- Updated UI presets: replaced Claude Haiku with Raptor Mini in free tier
- Fixed FREE_PRESETS to only include actually free models
This fixes the "model_not_supported" error when using free tier GitHub Copilot
subscription, which doesn't have access to Claude models.
- copilot-auth: use getCopilotApiBinPath() instead of npx
- copilot-daemon: move PID file to ~/.ccs/copilot/daemon.pid
- copilot-executor: auto-install copilot-api on first use
- index: export package manager functions