fix(plugin): P1 跨插件引用修复 — DateTime generated column + resolve-labels UUID 类型 + EntitySelect manifest→UUID 映射

- manifest.rs: DateTime 类型 generated column 改为 TEXT 存储（PostgreSQL TIMESTAMPTZ cast 非 immutable）
- data_handler.rs: resolve-labels 查询参数从 String 改为 UUID 类型避免类型不匹配
- data_dto.rs: PublicEntityResp 新增 plugin_id 字段
- EntitySelect.tsx: 跨插件查询先通过 registry 解析 manifest_id→plugin UUID
- pluginData.ts: PublicEntity 接口增加 plugin_id
- plugin_tests.rs: 适配 PluginField/PluginEntity 新增字段

crates/erp-plugin/src/handler/data_handler.rs

@@ -710,8 +710,9 @@ where
         );
 
         let mut values: Vec<sea_orm::Value> = vec![ctx.tenant_id.into()];
-        for u in uuid_strs {
-            values.push(u.into());
+        for u in &uuid_strs {
+            let uuid: Uuid = u.parse().map_err(|e| AppError::Internal(format!("invalid uuid: {}", e)))?;
+            values.push(uuid.into());
         }
 
         #[derive(FromQueryResult)]
@@ -771,6 +772,7 @@ where
             .to_string();
         PublicEntityResp {
             manifest_id: e.manifest_id.clone(),
+            plugin_id: e.plugin_id.to_string(),
             entity_name: e.entity_name.clone(),
             display_name,
         }