feat(vocab): add dashboard learning summary and related endpoints

- Introduced `getDashboardLearningSummary` method in `VocabService` to provide a compact overview of enrolled courses and current lessons for users.
- Updated `vocabController` to include a new route for the dashboard widget, allowing users to access their learning summary.
- Enhanced `vocabRouter` to route requests for the new dashboard widget endpoint.
- Added localization support for the new dashboard features across multiple languages, improving user engagement and accessibility.
- Updated UI components to integrate the new dashboard widget, ensuring a seamless user experience.

backend/migrations/20260401120000-politics-benefits-and-daily-salary.cjs

@@ -0,0 +1,82 @@
+'use strict';
+
+module.exports = {
+  up: async (queryInterface, Sequelize) => {
+    await queryInterface.addColumn(
+      {
+        tableName: 'falukant_user',
+        schema: 'falukant_data'
+      },
+      'last_political_daily_salary_on',
+      {
+        type: Sequelize.DATEONLY,
+        allowNull: true
+      }
+    );
+
+    await queryInterface.sequelize.query(`
+      DO $$
+      BEGIN
+        IF EXISTS (
+          SELECT 1 FROM information_schema.columns
+          WHERE table_schema = 'falukant_predefine'
+            AND table_name = 'political_office_benefit'
+            AND column_name = 'political_office_id'
+        ) AND NOT EXISTS (
+          SELECT 1 FROM information_schema.columns
+          WHERE table_schema = 'falukant_predefine'
+            AND table_name = 'political_office_benefit'
+            AND column_name = 'office_type_id'
+        ) THEN
+          ALTER TABLE falukant_predefine.political_office_benefit
+            RENAME COLUMN political_office_id TO office_type_id;
+        ELSIF EXISTS (
+          SELECT 1 FROM information_schema.columns
+          WHERE table_schema = 'falukant_predefine'
+            AND table_name = 'political_office_benefit'
+            AND column_name = 'political_office_id'
+        ) AND EXISTS (
+          SELECT 1 FROM information_schema.columns
+          WHERE table_schema = 'falukant_predefine'
+            AND table_name = 'political_office_benefit'
+            AND column_name = 'office_type_id'
+        ) THEN
+          UPDATE falukant_predefine.political_office_benefit
+          SET office_type_id = COALESCE(office_type_id, political_office_id);
+          ALTER TABLE falukant_predefine.political_office_benefit
+            DROP COLUMN political_office_id;
+        END IF;
+      END $$;
+    `);
+  },
+
+  down: async (queryInterface, Sequelize) => {
+    await queryInterface.removeColumn(
+      {
+        tableName: 'falukant_user',
+        schema: 'falukant_data'
+      },
+      'last_political_daily_salary_on'
+    );
+
+    await queryInterface.sequelize.query(`
+      DO $$
+      BEGIN
+        IF EXISTS (
+          SELECT 1 FROM information_schema.columns
+          WHERE table_schema = 'falukant_predefine'
+            AND table_name = 'political_office_benefit'
+            AND column_name = 'office_type_id'
+        ) AND NOT EXISTS (
+          SELECT 1 FROM information_schema.columns
+          WHERE table_schema = 'falukant_predefine'
+            AND table_name = 'political_office_benefit'
+            AND column_name = 'political_office_id'
+        ) THEN
+          ALTER TABLE falukant_predefine.political_office_benefit
+            RENAME COLUMN office_type_id TO political_office_id;
+        END IF;
+      END $$;
+    `);
+  }
+};