b8efd3c771
Implements a comprehensive 'doctor' command that diagnoses oh-my-opencode installation health with a beautiful TUI output. Checks performed: - OpenCode installation (version, path, binary) - Plugin registration in opencode.json - Configuration file validity (oh-my-opencode.json) - Auth providers (Anthropic, OpenAI, Google) - Dependencies (ast-grep CLI/NAPI, comment-checker) - LSP servers availability - MCP servers (builtin and user) - Version status and updates Features: - Beautiful TUI with symbols and colors - --verbose flag for detailed output - --json flag for machine-readable output - --category flag for running specific checks - Exit code 1 on failures for CI integration Closes #333 Co-authored-by: sisyphus-dev-ai <sisyphus-dev-ai@users.noreply.github.com>