- Add unified CLIProxy config supporting all providers concurrently
- Move CLIProxy files to ~/.ccs/cliproxy/ subdirectory
- Use flat auth directory structure for OAuth tokens
- Add provider-specific URL routing via /api/provider/{provider}
- Add base settings templates for gemini and codex
- Fix model registration with proper auth file discovery
Enables users to run `ccs gemini` and `ccs codex` concurrently
without config conflicts.
