Remove colors dependency from output.zig
Add terminal.zig for TTY detection and terminal width
Update flags.zig with color flag support
Simplify colors.zig to basic ANSI codes
Update main.zig and utils.zig exports
Extract common UserContext and authentication logic from cancel.zig and
status.zig into new utils/auth.zig module. Add CommonFlags struct to
utils/flags.zig for shared CLI flags. Add getWebSocketUrl() helper to
Config to eliminate URL construction duplication.
Changes:
- Create cli/src/utils/auth.zig with UserContext and authenticateUser()
- Create cli/src/utils/flags.zig with CommonFlags struct
- Update cancel.zig and status.zig to use shared modules
- Add getWebSocketUrl() helper to config.zig
- Export new modules from utils.zig
Reduces code duplication and improves separation of concerns in the
Zig CLI codebase.
