feat: add support for Claude 3.7 Sonnet model

This commit message follows conventional commits format and summarizes the main change: adding support for a new Claude model variant (3.7 Sonnet) across multiple client files.

Author: agentfarmx[bot]

llm_client/src/clients/anthropic.rs

@@ -402,6 +402,7 @@ impl AnthropicClient {
         match llm_type {
             LLMType::ClaudeOpus => Ok("claude-3-opus-20240229".to_owned()),
             LLMType::ClaudeSonnet => Ok("claude-3-5-sonnet-20241022".to_owned()),
+            LLMType::ClaudeSonnet3_7 => Ok("claude-3-7-sonnet-20250219".to_owned()),
             LLMType::ClaudeHaiku => Ok("claude-3-haiku-20240307".to_owned()),
             LLMType::Custom(model) => Ok(model.to_owned()),
             _ => Err(LLMClientError::UnSupportedModel),

llm_client/src/clients/codestory.rs

@@ -166,6 +166,7 @@ impl CodeStoryClient {
                 Ok("deepseek-ai/deepseek-coder-33b-instruct".to_owned())
             }
             LLMType::ClaudeSonnet => Ok("claude-3-5-sonnet-20241022".to_owned()), // updated to latest sonnet
+            LLMType::ClaudeSonnet3_7 => Ok("claude-3-7-sonnet-20250219".to_owned()),
             LLMType::ClaudeHaiku => Ok("claude-3-5-haiku-20241022".to_owned()), // updated to latest haiku
             LLMType::GeminiPro => Ok("google/gemini-flash-1.5".to_owned()),
             LLMType::GeminiProFlash => Ok("gemini-1.5-flash".to_owned()),
@@ -199,7 +200,7 @@ impl CodeStoryClient {
             LLMType::CodeLlama13BInstruct
             | LLMType::CodeLlama7BInstruct
             | LLMType::DeepSeekCoder33BInstruct => Ok(self.together_api_endpoint(&self.api_base)),
-            LLMType::ClaudeSonnet | LLMType::ClaudeHaiku => {
+            LLMType::ClaudeSonnet | LLMType::ClaudeSonnet3_7 | LLMType::ClaudeHaiku => {
                 Ok(self.openrouter_api_endpoint(&self.api_base))
             }
             LLMType::GeminiPro | LLMType::GeminiProFlash | LLMType::Gemini2_0Flash => {

llm_client/src/clients/types.rs

@@ -134,6 +134,7 @@ impl<'de> Deserialize<'de> for LLMType {
                     "DeepSeekCoder33BInstruct" => Ok(LLMType::DeepSeekCoder33BInstruct),
                     "ClaudeOpus" => Ok(LLMType::ClaudeOpus),
                     "ClaudeSonnet" => Ok(LLMType::ClaudeSonnet),
+                    "ClaudeSonnet3_7" => Ok(LLMType::ClaudeSonnet3_7),
                     "ClaudeHaiku" => Ok(LLMType::ClaudeHaiku),
                     "PPLXSonnetSmall" => Ok(LLMType::PPLXSonnetSmall),
                     "CohereRerankV3" => Ok(LLMType::CohereRerankV3),
@@ -248,6 +249,7 @@ impl fmt::Display for LLMType {
             LLMType::DeepSeekCoderV3 => write!(f, "deepseek/deepseek-chat"),
             LLMType::ClaudeOpus => write!(f, "ClaudeOpus"),
             LLMType::ClaudeSonnet => write!(f, "ClaudeSonnet"),
+            LLMType::ClaudeSonnet3_7 => write!(f, "ClaudeSonnet3_7"),
             LLMType::ClaudeHaiku => write!(f, "ClaudeHaiku"),
             LLMType::PPLXSonnetSmall => write!(f, "PPLXSonnetSmall"),
             LLMType::CohereRerankV3 => write!(f, "CohereRerankV3"),
@@ -1048,4 +1050,4 @@ mod tests {
         let str_llm_type = serde_json::to_string(&llm_type).expect("to work");
         assert_eq!(str_llm_type, "");
     }
-}
+}