Add reputation actions feature to Falukant module

- Introduced new endpoints for retrieving and executing reputation actions in FalukantController and falukantRouter.
- Implemented service methods in FalukantService to handle reputation actions, including daily limits and action execution logic.
- Updated the frontend ReputationView component to display available actions and their details, including cost and potential reputation gain.
- Added translations for reputation actions in both German and English locales.
- Enhanced initialization logic to set up reputation action types in the database.

backend/migrations/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;
+    `);
+  },
+};
+
+