Function format_gemini_model_name 

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

Format a Gemini model ID to a human-readable name.

Examples

• gemini-2.0-flash → Gemini 2.0 Flash
• gemini-2.0-flash-lite → Gemini 2.0 Flash Lite
• gemini-1.5-pro → Gemini 1.5 Pro