Rename all 1,169 components to path-based names with namespace support

Component names now reflect filesystem location using / as path separator
and : as namespace separator for shared components:
  ~sx-header → ~layouts/header
  ~layout-app-body → ~shared:layout/app-body
  ~blog-admin-dashboard → ~admin/dashboard

209 files, 4,941 replacements across all services.

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

cart/sxc/pages/cart.sx

@@ -6,7 +6,7 @@
   :auth :public
   :layout :root
   :data (service "cart-page" "overview-data")
-  :content (~cart-overview-content
+  :content (~overview/content
     :page-groups page-groups
     :cart-url-base cart-url-base))
 
@@ -15,11 +15,11 @@
   :auth :public
   :layout :cart-page
   :data (service "cart-page" "page-cart-data")
-  :content (~cart-page-cart-content
+  :content (~items/page-cart-content
     :cart-items cart-items
     :cal-entries cal-entries
     :ticket-groups ticket-groups
-    :summary (~cart-summary-from-data
+    :summary (~items/summary-from-data
       :item-count (get summary "item_count")
       :grand-total (get summary "grand_total")
       :symbol (get summary "symbol")
@@ -33,12 +33,12 @@
   :auth :admin
   :layout :cart-admin
   :data (service "cart-page" "admin-data")
-  :content (~cart-admin-content))
+  :content (~payments/admin-content))
 
 (defpage cart-payments
   :path "/<page_slug>/admin/payments/"
   :auth :admin
   :layout (:cart-admin :selected "payments")
   :data (service "cart-page" "payments-admin-data")
-  :content (~cart-payments-content
+  :content (~payments/content
     :page-config page-config))