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/routes/pages/store.py

@@ -216,6 +216,32 @@ async def store_loyalty_analytics(
     )
 
 
+# ============================================================================
+# STAFF PINS
+# ============================================================================
+
+
+@router.get(
+    "/loyalty/pins",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+async def store_loyalty_pins(
+    request: Request,
+    store_code: str = Depends(get_resolved_store_code),
+    current_user: User = Depends(get_current_store_from_cookie_or_header),
+    db: Session = Depends(get_db),
+):
+    """
+    Render staff PINs management page.
+    Allows store staff to manage staff PINs for loyalty transactions.
+    """
+    return templates.TemplateResponse(
+        "loyalty/store/pins.html",
+        get_store_context(request, db, current_user, store_code),
+    )
+
+
 # ============================================================================
 # ENROLLMENT
 # ============================================================================