fix: resolve all architecture validation warnings

JavaScript improvements:
- Add try/catch error handling to all async init() functions
- Move initialization guards before try/catch blocks (JS-005)
- Use centralized logger in i18n.js with silent fallback (JS-001)
- Add loading state to icons-page.js (JS-007)

Payments module structure:
- Add templates/, static/, and locales/ directories (MOD-005)
- Add locale files for en, de, fr, lb (MOD-006)

Architecture validation now passes with 0 errors, 0 warnings, 0 info.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/modules/payments/locales/lb.json

@@ -0,0 +1,12 @@
+{
+  "payments": {
+    "title": "Bezuelungen",
+    "menu": {
+      "payments": "Bezuelungen"
+    },
+    "messages": {
+      "payment_successful": "Bezuelung erfollegräich veraarbecht",
+      "payment_failed": "Bezuelungsveraarbechtung ass feelgeschloen"
+    }
+  }
+}