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/manifest.rs

@@ -118,7 +118,8 @@ impl PluginFieldType {
             Self::Decimal => "NUMERIC",
             Self::Boolean => "BOOLEAN",
             Self::Date => "DATE",
-            Self::DateTime => "TIMESTAMPTZ",
+            // TIMESTAMPTZ cast 不是 immutable，generated column 不支持类型转换，存为 TEXT
+            Self::DateTime => "TEXT",
             Self::Uuid => "UUID",
         }
     }
@@ -126,7 +127,7 @@ impl PluginFieldType {
     /// Generated Column 的表达式
     pub fn generated_expr(&self, field_name: &str) -> String {
         match self {
-            Self::String | Self::Json => format!("data->>'{}'", field_name),
+            Self::String | Self::Json | Self::DateTime => format!("data->>'{}'", field_name),
             _ => format!("(data->>'{}')::{}", field_name, self.generated_sql_type()),
         }
     }
@@ -687,7 +688,7 @@ label = "空标签页"
         assert_eq!(PluginFieldType::Decimal.generated_sql_type(), "NUMERIC");
         assert_eq!(PluginFieldType::Boolean.generated_sql_type(), "BOOLEAN");
         assert_eq!(PluginFieldType::Date.generated_sql_type(), "DATE");
-        assert_eq!(PluginFieldType::DateTime.generated_sql_type(), "TIMESTAMPTZ");
+        assert_eq!(PluginFieldType::DateTime.generated_sql_type(), "TEXT");
         assert_eq!(PluginFieldType::Uuid.generated_sql_type(), "UUID");
         assert_eq!(PluginFieldType::Json.generated_sql_type(), "TEXT");
     }