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/20260325000000-add-vocab-lesson-didactics.cjs

@@ -0,0 +1,36 @@
+/* eslint-disable */
+'use strict';
+
+module.exports = {
+  async up(queryInterface) {
+    await queryInterface.sequelize.query(`
+      ALTER TABLE community.vocab_course_lesson
+      ADD COLUMN IF NOT EXISTS learning_goals JSONB,
+      ADD COLUMN IF NOT EXISTS core_patterns JSONB,
+      ADD COLUMN IF NOT EXISTS grammar_focus JSONB,
+      ADD COLUMN IF NOT EXISTS speaking_prompts JSONB,
+      ADD COLUMN IF NOT EXISTS practical_tasks JSONB;
+    `);
+
+    await queryInterface.sequelize.query(`
+      INSERT INTO community.vocab_grammar_exercise_type (name, description) VALUES
+        ('dialog_completion', 'Dialogergänzung'),
+        ('situational_response', 'Situative Antwort'),
+        ('pattern_drill', 'Muster-Drill'),
+        ('reading_aloud', 'Lautlese-Übung'),
+        ('speaking_from_memory', 'Freies Sprechen')
+      ON CONFLICT (name) DO NOTHING;
+    `);
+  },
+
+  async down(queryInterface) {
+    await queryInterface.sequelize.query(`
+      ALTER TABLE community.vocab_course_lesson
+      DROP COLUMN IF EXISTS practical_tasks,
+      DROP COLUMN IF EXISTS speaking_prompts,
+      DROP COLUMN IF EXISTS grammar_focus,
+      DROP COLUMN IF EXISTS core_patterns,
+      DROP COLUMN IF EXISTS learning_goals;
+    `);
+  }
+};