feat(user): add certificate production tracking and update localization

- Introduced a new field `certificateProductionsCountSince` in the `FalukantUser` model to track the date from which production logs are counted for certificate requirements.
- Updated the `FalukantService` to utilize the new field for calculating completed productions since the specified date.
- Enhanced the UI to display the count of productions since the last promotion, with corresponding translations added for multiple languages including Cebuano, German, English, Spanish, and French.
- Implemented a method to delete old production logs, ensuring efficient data management while maintaining necessary historical records for certificate calculations.

backend/migrations/20260402140000-add-certificate-productions-count-since.cjs

@@ -0,0 +1,22 @@
+/* eslint-disable */
+'use strict';
+
+module.exports = {
+  async up(queryInterface) {
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_data.falukant_user
+        ADD COLUMN IF NOT EXISTS certificate_productions_count_since TIMESTAMPTZ;
+    `);
+    await queryInterface.sequelize.query(`
+      COMMENT ON COLUMN falukant_data.falukant_user.certificate_productions_count_since IS
+        'Daemon/UI: Zählt nur falukant_log.production-Zeilen mit COALESCE(production_timestamp, production_date::timestamp) >= diesem Wert; bei Stufenänderung (Aufstieg/Bankrott/Erbfolge) auf NOW() (YpDaemon QUERY_UPDATE_FALUKANT_USER_CERTIFICATE). NULL = alle passenden Log-Zeilen bis zur ersten Stufenänderung nach Migration. Kein Löschen der Logs zum Reset.';
+    `);
+  },
+
+  async down(queryInterface) {
+    await queryInterface.sequelize.query(`
+      ALTER TABLE falukant_data.falukant_user
+        DROP COLUMN IF EXISTS certificate_productions_count_since;
+    `);
+  }
+};