✨ feat(iris): 新增 InterSystems IRIS 数据源支持

- 后端新增 IRIS 连接、查询、DDL、索引元数据和 DataGrid 编辑能力
- 接入 optional driver-agent、构建标签、revision 生成和变更检测流程
- 前端新增 IRIS 连接入口、方言映射、能力配置和图标展示
- 修复 IRIS 主键识别、事务开启错误处理和驱动连接关闭问题
- 补充后端、前端和构建脚本相关回归测试
Refs #408

internal/db/driver_support.go

@@ -34,6 +34,7 @@ var optionalGoDrivers = map[string]struct{}{
 	"highgo":     {},
 	"vastbase":   {},
 	"opengauss":  {},
+	"iris":       {},
 	"mongodb":    {},
 	"tdengine":   {},
 	"clickhouse": {},
@@ -60,6 +61,8 @@ func normalizeRuntimeDriverType(driverType string) string {
 		return "kingbase"
 	case "opengauss", "open_gauss", "open-gauss":
 		return "opengauss"
+	case "intersystems", "intersystemsiris", "inter-systems-iris", "inter-systems":
+		return "iris"
 	default:
 		return normalized
 	}
@@ -101,6 +104,8 @@ func driverDisplayName(driverType string) string {
 		return "Vastbase"
 	case "opengauss":
 		return "OpenGauss"
+	case "iris":
+		return "InterSystems IRIS"
 	case "mongodb":
 		return "MongoDB"
 	case "tdengine":