chore: grpc + mtls working

agent/internal/config/config.go

@@ -0,0 +1,32 @@
+package config
+
+import (
+	"os"
+
+	"gopkg.in/yaml.v3"
+)
+
+type AgentConfig struct {
+	BackendURL        string `yaml:"backend_url"`
+	RegistrationToken string `yaml:"registration_token"`
+	Label             string `yaml:"label"`
+	CertDir           string `yaml:"cert_dir"`
+}
+
+func Load(path string) (*AgentConfig, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	var cfg AgentConfig
+	if err := yaml.Unmarshal(data, &cfg); err != nil {
+		return nil, err
+	}
+
+	if cfg.CertDir == "" {
+		cfg.CertDir = "/etc/hellreign-agent/certs"
+	}
+
+	return &cfg, nil
+}