feat(editor): add table copy/paste keyboard shortcuts

* feat: add table copy/paste with configurable structure and data options

- Implement Navicat-style table copy/paste functionality
- Support multi-table selection and batch operations
- Configurable paste modes: structure+data (default), structure only, data only
- Backend: add build_copy_table_data_sql API (INSERT INTO ... SELECT)
- TreeItem.vue: copy/paste context menus, paste dialog with mode selection
- ObjectBrowser.vue: batch toolbar buttons, context menu, paste dialog
- Refactor TreeClipboard type to support multi-table entries
- Add i18n keys for all 7 locale files (en, zh-CN, zh-TW, ja, es, it, pt-BR)

* Fix table paste shortcuts

* Fix Kafka MQ sidebar detection

* Restrict table paste scope

* Support data copy for primary SQL databases

crates/dbx-web/src/main.rs

@@ -331,6 +331,7 @@ async fn main() {
         .route("/query/build-create-schema-sql", post(routes::query::build_create_schema_sql))
         .route("/query/build-drop-schema-sql", post(routes::query::build_drop_schema_sql))
         .route("/query/build-duplicate-table-structure-sql", post(routes::query::build_duplicate_table_structure_sql))
+        .route("/query/build-copy-table-data-sql", post(routes::query::build_copy_table_data_sql))
         .route(
             "/query/build-executable-object-source-statements",
             post(routes::query::build_executable_object_source_statements),

crates/dbx-web/src/routes/query.rs

@@ -174,6 +174,12 @@ pub struct BuildDuplicateTableStructureSqlRequest {
     pub options: dbx_core::db_admin_sql::DuplicateTableStructureSqlOptions,
 }
 
+#[derive(Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct BuildCopyTableDataSqlRequest {
+    pub options: dbx_core::db_admin_sql::CopyTableDataSqlOptions,
+}
+
 #[derive(Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct BuildExecutableObjectSourceRequest {
@@ -622,6 +628,10 @@ pub async fn build_duplicate_table_structure_sql(
     Json(dbx_core::db_admin_sql::build_duplicate_table_structure_sql(req.options))
 }
 
+pub async fn build_copy_table_data_sql(Json(req): Json<BuildCopyTableDataSqlRequest>) -> Json<String> {
+    Json(dbx_core::db_admin_sql::build_copy_table_data_sql(req.options))
+}
+
 pub async fn build_executable_object_source_statements(
     Json(req): Json<BuildExecutableObjectSourceRequest>,
 ) -> Result<Json<Vec<String>>, AppError> {