ps: auto-derive years of service from join year + retirement age

audit/ps-auto-offlan-check.json

@@ -0,0 +1,16 @@
+{
+  "http_code": "200",
+  "has_marker": true,
+  "app_has_override_state": true,
+  "app_has_usecalc_button": true,
+  "i18n_has_fr_auto_hint": true,
+  "engine_has_autoServiceYears": true,
+  "sizes": {
+    "app": 53443,
+    "i18n": 39173,
+    "ps": 12254
+  },
+  "checked_at": "2026-10-09T19:41:54Z",
+  "vantage": "trouble@100.96.20.61 (Midhurst, off-LAN)",
+  "all_ok": true
+}