docs: add consolidated dev URL reference and migrate /shop to /storefront

- Add Development URL Quick Reference section to url-routing overview
  with all login URLs, entry points, and full examples
- Replace /shop/ path segments with /storefront/ across 50 docs files
- Update file references: shop_pages.py → storefront_pages.py,
  templates/shop/ → templates/storefront/, api/v1/shop/ → api/v1/storefront/
- Preserve domain references (orion.shop) and /store/ staff dashboard paths
- Archive docs left unchanged (historical)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/api/authentication-quick-reference.md

@@ -27,7 +27,7 @@ def store_page(user: User = Depends(get_current_store_from_cookie_or_header)):
     pass
 
 # Customer page - NOTE: Returns Customer, not User!
-@router.get("/shop/account/dashboard")
+@router.get("/storefront/account/dashboard")
 def customer_page(customer: Customer = Depends(get_current_customer_from_cookie_or_header)):
     pass  # customer.id, customer.email, customer.store_id
 ```
@@ -53,7 +53,7 @@ def store_api(user: User = Depends(get_current_store_api)):
     pass  # user.token_store_id for store context
 
 # Customer API - NOTE: Returns Customer, not User!
-@router.post("/api/v1/shop/orders")
+@router.post("/api/v1/storefront/orders")
 def customer_api(request: Request, customer: Customer = Depends(get_current_customer_api)):
     pass  # customer.id, request.state.store validated to match
 ```
@@ -66,7 +66,7 @@ def customer_api(request: Request, customer: Customer = Depends(get_current_cust
 |---------|--------|------|------|--------|
 | **Admin** | `admin_token` | `/admin` | `admin` | `/admin/*` |
 | **Store** | `store_token` | `/store` | `store` | `/store/*` |
-| **Customer** | `customer_token` | `/shop` | `customer` | `/shop/account/*` |
+| **Customer** | `customer_token` | `/storefront` | `customer` | `/storefront/account/*` |
 
 ---
 
@@ -208,8 +208,8 @@ console.log(parseJwt(localStorage.getItem('token')));
 3. ✅ **Admins** cannot access store/customer portals
 4. ✅ **Stores** cannot access admin/customer portals
 5. ✅ **Customers** cannot access admin/store portals
-6. ✅ **Public shop** (`/shop/products`) needs no auth
-7. ✅ **Customer accounts** (`/shop/account/*`) need auth
+6. ✅ **Public storefront** (`/storefront/products`) needs no auth
+7. ✅ **Customer accounts** (`/storefront/account/*`) need auth
 
 ---