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/20251230000000-add-vocab-trainer-tables.cjs

@@ -0,0 +1,61 @@
+/* eslint-disable */
+'use strict';
+
+module.exports = {
+  async up(queryInterface) {
+    // Sprache / Set, das geteilt werden kann
+    await queryInterface.sequelize.query(`
+      CREATE TABLE IF NOT EXISTS community.vocab_language (
+        id SERIAL PRIMARY KEY,
+        owner_user_id INTEGER NOT NULL,
+        name TEXT NOT NULL,
+        share_code TEXT NOT NULL,
+        created_at TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT NOW(),
+        CONSTRAINT vocab_language_owner_fk
+          FOREIGN KEY (owner_user_id)
+          REFERENCES community."user"(id)
+          ON DELETE CASCADE,
+        CONSTRAINT vocab_language_share_code_uniq UNIQUE (share_code)
+      );
+    `);
+
+    // Abos (Freunde)
+    await queryInterface.sequelize.query(`
+      CREATE TABLE IF NOT EXISTS community.vocab_language_subscription (
+        id SERIAL PRIMARY KEY,
+        user_id INTEGER NOT NULL,
+        language_id INTEGER NOT NULL,
+        created_at TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT NOW(),
+        CONSTRAINT vocab_language_subscription_user_fk
+          FOREIGN KEY (user_id)
+          REFERENCES community."user"(id)
+          ON DELETE CASCADE,
+        CONSTRAINT vocab_language_subscription_language_fk
+          FOREIGN KEY (language_id)
+          REFERENCES community.vocab_language(id)
+          ON DELETE CASCADE,
+        CONSTRAINT vocab_language_subscription_uniq UNIQUE (user_id, language_id)
+      );
+    `);
+
+    await queryInterface.sequelize.query(`
+      CREATE INDEX IF NOT EXISTS vocab_language_owner_idx
+      ON community.vocab_language(owner_user_id);
+    `);
+    await queryInterface.sequelize.query(`
+      CREATE INDEX IF NOT EXISTS vocab_language_subscription_user_idx
+      ON community.vocab_language_subscription(user_id);
+    `);
+    await queryInterface.sequelize.query(`
+      CREATE INDEX IF NOT EXISTS vocab_language_subscription_language_idx
+      ON community.vocab_language_subscription(language_id);
+    `);
+  },
+
+  async down(queryInterface) {
+    await queryInterface.sequelize.query(`DROP TABLE IF EXISTS community.vocab_language_subscription;`);
+    await queryInterface.sequelize.query(`DROP TABLE IF EXISTS community.vocab_language;`);
+  }
+};
+
+