Replace structured LLM dependency with Audita adapter

internal/framework/llm/effective_config.go

@@ -30,15 +30,14 @@ func ResolveValidationConfig(cfg config.Config) EffectiveConfig {
 	return resolveFromLLMConfig(cfg.EffectiveValidationLLMConfig(), cfg.EffectiveValidationLLMConcurrency())
 }
 
-// ToInstructorClientConfig converts an effective runtime config into adapter
-// config while keeping instructor-go types fully internal to this package.
-func (c EffectiveConfig) ToInstructorClientConfig(mode Mode, httpClient *http.Client) InstructorClientConfig {
-	return InstructorClientConfig{
+// ToOpenAICompatibleClientConfig converts an effective runtime config into
+// direct HTTP adapter config.
+func (c EffectiveConfig) ToOpenAICompatibleClientConfig(httpClient *http.Client) OpenAICompatibleClientConfig {
+	return OpenAICompatibleClientConfig{
 		BaseURL:        c.BaseURL,
 		Model:          c.Model,
 		APIKey:         c.APIKey,
 		MaxRetries:     c.MaxRetries,
-		Mode:           mode,
 		HTTPClient:     httpClient,
 		RequestTimeout: c.RequestTimeout,
 	}