Implemented an --llm-concurrency flag in the Go application that enforces a global LLM concurrency cap

internal/core/config/flags.go

@@ -11,6 +11,7 @@ type CLIOverrides struct {
 	PrimaryBaseURL                *string
 	ValidationBaseURL             *string
 	PrimaryLLMTimeoutSeconds      *int
+	PrimaryLLMConcurrency         *int
 	ValidationLLMTimeoutSeconds   *int
 	MaxRetries                    *int
 	ValidationMaxRetries          *int
@@ -61,6 +62,9 @@ func (c *Config) ApplyCLIOverrides(overrides CLIOverrides) error {
 	if overrides.PrimaryLLMTimeoutSeconds != nil {
 		c.PrimaryLLM.TimeoutSeconds = *overrides.PrimaryLLMTimeoutSeconds
 	}
+	if overrides.PrimaryLLMConcurrency != nil {
+		c.PrimaryLLM.Concurrency = *overrides.PrimaryLLMConcurrency
+	}
 	if overrides.ValidationLLMTimeoutSeconds != nil {
 		value := *overrides.ValidationLLMTimeoutSeconds
 		c.ValidationLLM.TimeoutSeconds = &value