Add environment field to BackendSettings for improved configuration

pkg/config/config.go

@@ -15,6 +15,7 @@ import (
 type BackendSettings struct {
 	Command     string            `yaml:"command"`
 	Args        []string          `yaml:"args"`
+	Environment map[string]string `yaml:"environment,omitempty"`
 	Docker      *DockerSettings   `yaml:"docker,omitempty"`
 }
 
@@ -137,6 +138,7 @@ func LoadConfig(configPath string) (AppConfig, error) {
 			LlamaCpp: BackendSettings{
 				Command:     "llama-server",
 				Args:        []string{},
+				Environment: map[string]string{},
 				Docker: &DockerSettings{
 					Enabled: false,
 					Image:   "ghcr.io/ggml-org/llama.cpp:server",