feat: add SQL query tool, platform debug, loyalty settings, and multi-module improvements

- Add admin SQL query tool with saved queries, schema explorer presets,
  and collapsible category sections (dev_tools module)
- Add platform debug tool for admin diagnostics
- Add loyalty settings page with owner-only access control
- Fix loyalty settings owner check (use currentUser instead of window.__userData)
- Replace HTTPException with AuthorizationException in loyalty routes
- Expand loyalty module with PIN service, Apple Wallet, program management
- Improve store login with platform detection and multi-platform support
- Update billing feature gates and subscription services
- Add store platform sync improvements and remove is_primary column
- Add unit tests for loyalty (PIN, points, stamps, program services)
- Update i18n translations across dev_tools locales

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/dev_tools/locales/de.json

@@ -12,6 +12,23 @@
     "menu": {
         "developer_tools": "Entwicklerwerkzeuge",
         "components": "Komponenten",
-        "icons": "Icons"
+        "icons": "Icons",
+        "sql_query": "SQL Abfrage",
+        "platform_debug": "Plattform Debug"
+    },
+    "sql_query": {
+        "title": "SQL Abfrage-Werkzeug",
+        "execute": "Abfrage ausführen",
+        "save": "Abfrage speichern",
+        "export_csv": "CSV exportieren",
+        "saved_queries": "Gespeicherte Abfragen",
+        "no_saved_queries": "Noch keine gespeicherten Abfragen.",
+        "query_name": "Abfragename",
+        "description": "Beschreibung",
+        "forbidden_keyword": "Verbotenes SQL-Schlüsselwort. Nur SELECT-Abfragen sind erlaubt.",
+        "query_empty": "Abfrage darf nicht leer sein.",
+        "rows_returned": "Zeilen zurückgegeben",
+        "results_truncated": "Ergebnisse auf 1000 Zeilen beschränkt",
+        "execution_time": "Ausführungszeit"
     }
 }