feat(deploy): update deployment workflow and migration paths

- Modified the deployment workflow to include new migration paths for the backend, ensuring that migrations are correctly referenced in the deployment process.
- Updated the `db:migrate` script in package.json to point to the `migrations-active` directory, enhancing clarity and organization of migration files.
- Adjusted the deployment conditions to account for changes in migration file locations, improving the accuracy of change detection during deployments.
- Removed obsolete migration files to streamline the migration process and prevent confusion.

backend/migrations-archive/20260401000000-add-vocab-course-progress-lesson-state.cjs

@@ -0,0 +1,20 @@
+'use strict';
+
+module.exports = {
+  async up(queryInterface) {
+    await queryInterface.sequelize.query(`
+      ALTER TABLE community.vocab_course_progress
+      ADD COLUMN IF NOT EXISTS lesson_state JSONB NOT NULL DEFAULT '{}'::jsonb;
+
+      COMMENT ON COLUMN community.vocab_course_progress.lesson_state IS
+        'Persistierter UI- und Lernzustand pro Nutzer und Lektion fuer Resume im Sprachkurs.';
+    `);
+  },
+
+  async down(queryInterface) {
+    await queryInterface.sequelize.query(`
+      ALTER TABLE community.vocab_course_progress
+      DROP COLUMN IF EXISTS lesson_state;
+    `);
+  }
+};