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/container-cards.sx

@@ -19,13 +19,13 @@
                 (post-slug (or (nth slugs i) "")))
             (<> (str "<!-- card-widget:" pid " -->")
                 (when (not (empty? entries))
-                  (~events-frag-entries-widget
+                  (~fragments/frag-entries-widget
                     :cards (<> (map (fn (e)
                       (let ((time-str (str (format-date (get e "start_at") "%H:%M")
                                           (if (get e "end_at")
                                             (str " \u2013 " (format-date (get e "end_at") "%H:%M"))
                                             ""))))
-                        (~events-frag-entry-card
+                        (~fragments/frag-entry-card
                           :href (app-url "events"
                                   (str "/" post-slug
                                        "/" (get e "calendar_slug")