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/20251220002000-backfill-reputation-action-window.cjs

@@ -0,0 +1,46 @@
+/* eslint-disable */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    // Für bereits existierende Installationen: Spalte sicherstellen + Backfill
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_type.reputation_action
+      ADD COLUMN IF NOT EXISTS decay_window_days integer;
+    `);
+    await queryInterface.sequelize.query(`
+      UPDATE falukant_type.reputation_action
+      SET decay_window_days = 7
+      WHERE decay_window_days IS NULL;
+    `);
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_type.reputation_action
+      ALTER COLUMN decay_window_days SET DEFAULT 7;
+    `);
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_type.reputation_action
+      ALTER COLUMN decay_window_days SET NOT NULL;
+    `);
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_type.reputation_action
+      DROP CONSTRAINT IF EXISTS reputation_action_decay_window_days_chk;
+    `);
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_type.reputation_action
+      ADD CONSTRAINT reputation_action_decay_window_days_chk
+      CHECK (decay_window_days >= 1 AND decay_window_days <= 365);
+    `);
+  },
+
+  async down(queryInterface, Sequelize) {
+    // optional: wieder entfernen
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_type.reputation_action
+      DROP CONSTRAINT IF EXISTS reputation_action_decay_window_days_chk;
+    `);
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_type.reputation_action
+      DROP COLUMN IF EXISTS decay_window_days;
+    `);
+  },
+};
+
+