feat(storefront): homepage, module gating, widget protocol, i18n fixes

Storefront homepage & module gating:
- CMS owns storefront GET / (slug="home" with 3-tier resolution)
- Catalog loses GET / (keeps /products only)
- Store root redirect (GET / → /store/dashboard or /store/login)
- Route gating: non-core modules return 404 when disabled for platform
- Seed store default homepages per platform

Widget protocol for customer dashboard:
- StorefrontDashboardCard contract in widgets.py
- Widget aggregator get_storefront_dashboard_cards()
- Orders and Loyalty module widget providers
- Dashboard template renders contributed cards (no module names)

Landing template module-agnostic:
- CTAs driven by storefront_nav (not hardcoded module names)
- Header actions check nav item IDs (not enabled_modules)
- Remove hardcoded "Add Product" sidebar button
- Remove all enabled_modules checks from storefront templates

i18n fixes:
- Title placeholder resolution ({{store_name}}) for store default pages
- Storefront nav label_keys prefixed with module code
- Add storefront.account.* keys to 6 modules (en/fr/de/lb)
- Header/footer CMS pages use get_translated_title(current_language)
- Footer labels use i18n keys instead of hardcoded English

Icon cleanup:
- Standardize on map-pin (remove location-marker alias)
- Replace all location-marker references across templates and docs

Docs:
- Storefront builder vision proposal (6 phases)

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

app/modules/core/routes/pages/store.py

@@ -9,11 +9,13 @@ Store pages for core functionality:
 """
 
 from fastapi import APIRouter, Depends, Request
-from fastapi.responses import HTMLResponse
+from fastapi.responses import HTMLResponse, RedirectResponse
 from sqlalchemy.orm import Session
 
 from app.api.deps import (
+    UserContext,
     get_current_store_from_cookie_or_header,
+    get_current_store_optional,
     get_db,
     get_resolved_store_code,
 )
@@ -24,6 +26,21 @@ from app.templates_config import templates
 router = APIRouter()
 
 
+# ============================================================================
+# STORE ROOT REDIRECT
+# ============================================================================
+
+
+@router.get("/", response_class=RedirectResponse, include_in_schema=False)
+async def store_root(
+    current_user: UserContext | None = Depends(get_current_store_optional),
+):
+    """Redirect /store/ based on authentication status."""
+    if current_user:
+        return RedirectResponse(url="/store/dashboard", status_code=302)
+    return RedirectResponse(url="/store/login", status_code=302)
+
+
 # ============================================================================
 # STORE DASHBOARD
 # ============================================================================

app/modules/core/services/widget_aggregator.py

@@ -34,6 +34,7 @@ from sqlalchemy.orm import Session
 from app.modules.contracts.widgets import (
     DashboardWidget,
     DashboardWidgetProviderProtocol,
+    StorefrontDashboardCard,
     WidgetContext,
 )
 
@@ -233,6 +234,49 @@ class WidgetAggregatorService:
                 return widget
         return None
 
+    def get_storefront_dashboard_cards(
+        self,
+        db: Session,
+        store_id: int,
+        customer_id: int,
+        platform_id: int,
+        context: WidgetContext | None = None,
+    ) -> list[StorefrontDashboardCard]:
+        """
+        Get dashboard cards for the storefront customer account page.
+
+        Collects cards from all enabled modules that implement
+        get_storefront_dashboard_cards(), sorted by order.
+
+        Args:
+            db: Database session
+            store_id: ID of the store
+            customer_id: ID of the logged-in customer
+            platform_id: Platform ID (for module enablement check)
+            context: Optional filtering/scoping context
+
+        Returns:
+            Flat list of StorefrontDashboardCard sorted by order
+        """
+        providers = self._get_enabled_providers(db, platform_id)
+        cards: list[StorefrontDashboardCard] = []
+
+        for module, provider in providers:
+            if not hasattr(provider, "get_storefront_dashboard_cards"):
+                continue
+            try:
+                module_cards = provider.get_storefront_dashboard_cards(
+                    db, store_id, customer_id, context
+                )
+                if module_cards:
+                    cards.extend(module_cards)
+            except Exception as e:
+                logger.warning(
+                    f"Failed to get storefront cards from module {module.code}: {e}"
+                )
+
+        return sorted(cards, key=lambda c: c.order)
+
     def get_available_categories(
         self, db: Session, platform_id: int
     ) -> list[str]: