feat(deepseek): 添加 DeepSeek reasoning 模式支持

src/commands/config.rs

@@ -993,7 +993,7 @@ impl ConfigCommand {
             "deepseek" => {
                 println!("DeepSeek models:");
                 println!("  deepseek-chat");
-                println!("  deepseek-coder");
+                println!("  deepseek-reasoner");
             }
             "openrouter" => {
                 println!("OpenRouter models (examples):");