Function format_grok_model_name 

pub fn format_grok_model_name(id: &str) -> String

Format a Grok model ID to human-readable name.

Preserves numeric version suffixes (e.g., release dates) in parentheses so that distinct model snapshots remain distinguishable.

Examples

• grok-4-0709 → Grok 4 (0709)
• grok-3 → Grok 3
• grok-3-mini → Grok 3 Mini
• grok-3-mini-fast → Grok 3 Mini Fast
• grok-2-1212 → Grok 2 (1212)
• grok-2-vision-1212 → Grok 2 Vision (1212)