Auto-mount defpages: eliminate Python route stubs across all 9 services

Defpages are now declared with absolute paths in .sx files and auto-mounted
directly on the Quart app, removing ~850 lines of blueprint mount_pages calls,
before_request hooks, and g.* wrapper boilerplate. A new page = one defpage
declaration, nothing else.

Infrastructure:
- async_eval awaits coroutine results from callable dispatch
- auto_mount_pages() mounts all registered defpages on the app
- g._defpage_ctx pattern passes helper data to layout context

Migrated: sx, account, orders, federation, cart, market, events, blog

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

events/sxc/pages/events.sx

@@ -1,89 +1,89 @@
-;; Events pages — mounted on various nested blueprints
+;; Events pages — auto-mounted with absolute paths
 
-;; Calendar admin (mounted on calendar.admin bp)
+;; Calendar admin
 (defpage calendar-admin
-  :path "/"
+  :path "/<slug>/<calendar_slug>/admin/"
   :auth :admin
   :layout :events-calendar-admin
-  :content (calendar-admin-content))
+  :content (calendar-admin-content calendar-slug))
 
-;; Day admin (mounted on day.admin bp)
+;; Day admin
 (defpage day-admin
-  :path "/"
+  :path "/<slug>/<calendar_slug>/day/<int:year>/<int:month>/<int:day>/admin/"
   :auth :admin
   :layout :events-day-admin
-  :content (day-admin-content))
+  :content (day-admin-content calendar-slug year month day))
 
-;; Slots listing (mounted on slots bp)
+;; Slots listing
 (defpage slots-listing
-  :path "/"
+  :path "/<slug>/<calendar_slug>/slots/"
   :auth :public
   :layout :events-slots
-  :content (slots-content))
+  :content (slots-content calendar-slug))
 
-;; Slot detail (mounted on slot bp)
+;; Slot detail
 (defpage slot-detail
-  :path "/"
+  :path "/<slug>/<calendar_slug>/slots/<int:slot_id>/"
   :auth :admin
   :layout :events-slot
-  :content (slot-content))
+  :content (slot-content calendar-slug slot-id))
 
-;; Entry detail (mounted on calendar_entry bp)
+;; Entry detail
 (defpage entry-detail
-  :path "/"
+  :path "/<slug>/<calendar_slug>/day/<int:year>/<int:month>/<int:day>/entries/<int:entry_id>/"
   :auth :admin
   :layout :events-entry
-  :content (entry-content)
-  :menu (entry-menu))
+  :content (entry-content calendar-slug entry-id)
+  :menu (entry-menu calendar-slug entry-id))
 
-;; Entry admin (mounted on calendar_entry.admin bp)
+;; Entry admin
 (defpage entry-admin
-  :path "/"
+  :path "/<slug>/<calendar_slug>/day/<int:year>/<int:month>/<int:day>/entries/<int:entry_id>/admin/"
   :auth :admin
   :layout :events-entry-admin
-  :content (entry-admin-content)
+  :content (entry-admin-content calendar-slug entry-id)
   :menu (admin-menu))
 
-;; Ticket types listing (mounted on ticket_types bp)
+;; Ticket types listing
 (defpage ticket-types-listing
-  :path "/"
+  :path "/<slug>/<calendar_slug>/day/<int:year>/<int:month>/<int:day>/entries/<int:entry_id>/ticket-types/"
   :auth :public
   :layout :events-ticket-types
-  :content (ticket-types-content)
+  :content (ticket-types-content calendar-slug entry-id year month day)
   :menu (admin-menu))
 
-;; Ticket type detail (mounted on ticket_type bp)
+;; Ticket type detail
 (defpage ticket-type-detail
-  :path "/"
+  :path "/<slug>/<calendar_slug>/day/<int:year>/<int:month>/<int:day>/entries/<int:entry_id>/ticket-types/<int:ticket_type_id>/"
   :auth :admin
   :layout :events-ticket-type
-  :content (ticket-type-content)
+  :content (ticket-type-content calendar-slug entry-id ticket-type-id year month day)
   :menu (admin-menu))
 
-;; My tickets (mounted on tickets bp)
+;; My tickets
 (defpage my-tickets
-  :path "/"
+  :path "/tickets/"
   :auth :public
   :layout :root
   :content (tickets-content))
 
-;; Ticket detail (mounted on tickets bp)
+;; Ticket detail
 (defpage ticket-detail
-  :path "/<code>/"
+  :path "/tickets/<code>/"
   :auth :public
   :layout :root
-  :content (ticket-detail-content))
+  :content (ticket-detail-content code))
 
-;; Ticket admin dashboard (mounted on ticket_admin bp)
+;; Ticket admin dashboard
 (defpage ticket-admin
-  :path "/"
+  :path "/admin/tickets/"
   :auth :admin
   :layout :root
   :content (ticket-admin-content))
 
-;; Markets (mounted on markets bp)
+;; Markets
 (defpage events-markets
-  :path "/"
+  :path "/<slug>/markets/"
   :auth :public
   :layout :events-markets
   :content (markets-content))