feat(loyalty): cross-persona page alignment with shared components

Align loyalty pages across admin, merchant, and store personas so each
sees the same page set scoped to their access level. Admin acts as a
superset of merchant with "on behalf" capabilities.

New pages:
- Store: Staff PINs management (CRUD)
- Merchant: Cards, Card Detail, Transactions, Staff PINs (CRUD), Settings (read-only)
- Admin: Merchant Cards, Card Detail, Transactions, PINs (read-only)

Architecture:
- 4 shared Jinja2 partials (cards-list, card-detail, transactions, pins)
- 4 shared JS factory modules parameterized by apiPrefix/scope
- Persona templates are thin wrappers including shared partials
- PinDetailResponse schema for cross-store PIN listings

API: 17 new endpoints (11 merchant, 6 admin on-behalf)
Tests: 38 new integration tests, arch-check green
i18n: ~130 new keys across en/fr/de/lb
Docs: pages-and-navigation.md with full page matrix

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/modules/loyalty/static/admin/js/loyalty-merchant-pins.js

@@ -0,0 +1,23 @@
+// app/modules/loyalty/static/admin/js/loyalty-merchant-pins.js
+// Admin wrapper for shared loyalty PINs list (on-behalf read-only view).
+
+const adminMerchantPinsLog = window.LogConfig.loggers.adminMerchantPins || window.LogConfig.createLogger('adminMerchantPins');
+
+function adminMerchantPins() {
+    // Extract merchant_id from URL: /admin/loyalty/merchants/{merchant_id}/pins
+    const pathParts = window.location.pathname.split('/');
+    const merchantsIndex = pathParts.indexOf('merchants');
+    const merchantId = merchantsIndex !== -1 ? pathParts[merchantsIndex + 1] : null;
+
+    return loyaltyPinsList({
+        apiPrefix: '/admin/loyalty/merchants/' + merchantId,
+        showStoreFilter: true,
+        showCrud: false,
+        currentPage: 'loyalty-programs',
+    });
+}
+
+if (!window.LogConfig.loggers.adminMerchantPins) {
+    window.LogConfig.loggers.adminMerchantPins = window.LogConfig.createLogger('adminMerchantPins');
+}
+adminMerchantPinsLog.info('Admin merchant pins module loaded');