fix: rebuild MES as compilable go-zero+ent backend (renamed bj_power_mes), restore 3 workstation projects from pristine original, align naming; all Go projects go build clean

bj_power_mes/internal/processor/tool/helpers.go

@@ -0,0 +1,19 @@
+package tool
+
+// extractWorkpieceType 从参数中提取工件类型 ID
+func extractWorkpieceType(params map[string]any) int {
+	return extractIntParam(params, "workpieceType")
+}
+
+// extractIntParam 从参数 map 中提取 int 类型值，支持 int/float64 转换
+func extractIntParam(params map[string]any, key string) int {
+	if v, ok := params[key]; ok {
+		if n, ok := v.(int); ok {
+			return n
+		}
+		if f, ok := v.(float64); ok {
+			return int(f)
+		}
+	}
+	return 0
+}