refactor: centralize protobuf and remove go-zero

module/ec/delivery/internal/config/config.go

@@ -1,14 +1,54 @@
 package config
 
 import (
-	"git.apinb.com/bsm-sdk/engine/types"
-	"github.com/zeromicro/go-zero/zrpc"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"git.apinb.com/bsm-sdk/core/types"
+	"gopkg.in/yaml.v3"
 )
 
+// Config retains the legacy delivery YAML shape so existing deployments continue to work.
+// Cache and Pulsar are deprecated and intentionally ignored because the service never used them.
 type Config struct {
-	zrpc.RpcServerConf
-	DSN       string              `json:",optional"`
-	Cache     string              `json:",optional"`
-	Anonymous types.AnonymousConf `json:",optional"`
-	Pulsar    types.PulsarConf    `json:",optional"`
+	Name      string              `yaml:"Name"`
+	ListenOn  string              `yaml:"ListenOn"`
+	DSN       string              `yaml:"Dsn"`
+	Cache     string              `yaml:"Cache"`
+	Anonymous types.AnonymousConf `yaml:"Anonymous"`
+	Pulsar    types.PulsarConf    `yaml:"Pulsar"`
+}
+
+func Load(serviceKey string) (Config, error) {
+	mode := strings.ToLower(envOr("BlocksMesh_RuntimeMode", "dev"))
+	prefix := envOr("BlocksMesh_Prefix", ".")
+	workspace := envOr("BlocksMesh_Workspace", "def")
+	path := filepath.Join(prefix, "etc", fmt.Sprintf("%s_%s.yaml", serviceKey, mode))
+
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return Config{}, fmt.Errorf("read config %s: %w", path, err)
+	}
+	replacer := strings.NewReplacer(
+		"{ServiceKey}", serviceKey,
+		"{Workspace}", workspace,
+		"{RuntimeMode}", mode,
+	)
+	var cfg Config
+	if err := yaml.Unmarshal([]byte(os.ExpandEnv(replacer.Replace(string(data)))), &cfg); err != nil {
+		return Config{}, fmt.Errorf("parse config %s: %w", path, err)
+	}
+	if cfg.ListenOn == "" {
+		return Config{}, fmt.Errorf("ListenOn is required in %s", path)
+	}
+	return cfg, nil
+}
+
+func envOr(key, fallback string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return fallback
 }