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.

src/valuerecalculationworker.cpp

@@ -71,8 +71,10 @@ void ValueRecalculationWorker::calculateProductKnowledge() {
         const auto userId = std::stoi(user.at("producer_id"));
         sendMessageToFalukantUsers(userId, message);
     }
-    db.prepare("QUERY_DELETE_OLD_PRODUCTIONS", QUERY_DELETE_OLD_PRODUCTIONS);
-    db.execute("QUERY_DELETE_OLD_PRODUCTIONS");
+    /* Kein DELETE mehr auf falukant_log.production um Mitternacht: Die Einträge werden für
+     * Zertifikatsfortschritt (Backend + Daemon) benötigt.
+     * UserCharacterWorker: nach Wissens-Update pro Zeile löschen; zusätzlich stündlich Retention
+     * QUERY_DELETE_OLD_PRODUCTIONS (30 Tage, COALESCE(timestamp, production_date)). */
 }
 
 void ValueRecalculationWorker::calculateRegionalSellPrice() {