🔄 Update default LLM models to latest versions

Update default model identifiers to their latest versions

This change updates the default model identifiers to point to the
latest available versions:

- Change OpenAI's default from "gpt-4o" to "gpt-4.1"
- Update Anthropic's default from versioned "claude-3-7-sonnet-20250219"
  to the "claude-3-7-sonnet-latest" alias

Corresponding test cases have been updated to match the new defaults.

Author: hyperb1iss

Diff for: src/llm.rs

@@ -237,14 +237,14 @@ pub fn get_available_provider_names() -> Vec<String> {
 /// Returns the default model for a given provider
 pub fn get_default_model_for_provider(provider_type: &str) -> &'static str {
     match provider_type.to_lowercase().as_str() {
-        "anthropic" => "claude-3-7-sonnet-20250219",
+        "anthropic" => "claude-3-7-sonnet-latest",
         "ollama" => "llama3",
         "google" => "gemini-2.0-flash",
         "groq" => "llama-3.1-70b-versatile",
         "xai" => "grok-2-beta",
         "deepseek" => "deepseek-chat",
         "phind" => "phind-v2",
-        _ => "gpt-4o", // Default to OpenAI's model
+        _ => "gpt-4.1", // Default to OpenAI's model
     }
 }
 

Diff for: tests/llm_tests.rs

@@ -29,7 +29,7 @@ fn test_get_available_providers() {
 #[test]
 fn test_get_default_model_for_provider() {
     // Test known providers
-    assert_eq!(get_default_model_for_provider("openai"), "gpt-4o");
+    assert_eq!(get_default_model_for_provider("openai"), "gpt-4.1");
     assert_eq!(
         get_default_model_for_provider("anthropic"),
         "claude-3-7-sonnet-20250219"
@@ -38,7 +38,7 @@ fn test_get_default_model_for_provider() {
     assert_eq!(get_default_model_for_provider("xai"), "grok-2-beta");
 
     // Test fallback for unknown provider
-    assert_eq!(get_default_model_for_provider("unknown"), "gpt-4o");
+    assert_eq!(get_default_model_for_provider("unknown"), "gpt-4.1");
 }
 
 #[test]