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>

events/sx/handlers/link-card.sx

@@ -16,7 +16,7 @@
                                    :container-type "page"
                                    :container-id (get post "id")))
                       (cal-names (join ", " (map (fn (c) (get c "name")) calendars))))
-                  (~link-card
+                  (~shared:fragments/link-card
                     :title (get post "title")
                     :image (get post "feature_image")
                     :subtitle cal-names
@@ -28,7 +28,7 @@
                              :container-type "page"
                              :container-id (get post "id")))
                 (cal-names (join ", " (map (fn (c) (get c "name")) calendars))))
-            (~link-card
+            (~shared:fragments/link-card
               :title (get post "title")
               :image (get post "feature_image")
               :subtitle cal-names