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/sx/sx_components.py

@@ -191,11 +191,11 @@ def _calendar_nav_sx(ctx: dict) -> str:
     select_colours = ctx.get("select_colours", "")
 
     parts = []
-    slots_href = url_for("calendar.slots.defpage_slots_listing", calendar_slug=cal_slug)
+    slots_href = url_for("defpage_slots_listing", calendar_slug=cal_slug)
     parts.append(sx_call("nav-link", href=slots_href, icon="fa fa-clock",
                         label="Slots", select_colours=select_colours))
     if is_admin:
-        admin_href = url_for("calendar.admin.defpage_calendar_admin", calendar_slug=cal_slug)
+        admin_href = url_for("defpage_calendar_admin", calendar_slug=cal_slug)
         parts.append(sx_call("nav-link", href=admin_href, icon="fa fa-cog",
                             select_colours=select_colours))
     return "".join(parts)
@@ -319,7 +319,7 @@ def _calendar_admin_header_sx(ctx: dict, *, oob: bool = False) -> str:
     nav_parts = []
     if cal_slug:
         for endpoint, label in [
-            ("calendar.slots.defpage_slots_listing", "slots"),
+            ("defpage_slots_listing", "slots"),
             ("calendar.admin.calendar_description_edit", "description"),
         ]:
             href = url_for(endpoint, calendar_slug=cal_slug)
@@ -339,7 +339,7 @@ def _calendar_admin_header_sx(ctx: dict, *, oob: bool = False) -> str:
 def _markets_header_sx(ctx: dict, *, oob: bool = False) -> str:
     """Build the markets section header row."""
     from quart import url_for
-    link_href = url_for("markets.defpage_events_markets")
+    link_href = url_for("defpage_events_markets")
     return sx_call("menu-row-sx", id="markets-row", level=3,
                   link_href=link_href,
                   link_label_content=SxExpr(sx_call("events-markets-label")),
@@ -594,7 +594,7 @@ def _day_row_html(ctx: dict, entry) -> str:
     # Slot/Time
     slot = getattr(entry, "slot", None)
     if slot:
-        slot_href = url_for("calendar.slots.slot.defpage_slot_detail", calendar_slug=cal_slug, slot_id=slot.id)
+        slot_href = url_for("defpage_slot_detail", calendar_slug=cal_slug, slot_id=slot.id)
         time_start = slot.time_start.strftime("%H:%M") if slot.time_start else ""
         time_end = f" \u2192 {slot.time_end.strftime('%H:%M')}" if slot.time_end else ""
         slot_html = sx_call("events-day-row-slot",
@@ -774,7 +774,7 @@ def _tickets_main_panel_html(ctx: dict, tickets: list) -> str:
     ticket_cards = []
     if tickets:
         for ticket in tickets:
-            href = url_for("tickets.defpage_ticket_detail", code=ticket.code)
+            href = url_for("defpage_ticket_detail", code=ticket.code)
             entry = getattr(ticket, "entry", None)
             entry_name = entry.name if entry else "Unknown event"
             tt = getattr(ticket, "ticket_type", None)
@@ -819,7 +819,7 @@ def _ticket_detail_panel_html(ctx: dict, ticket) -> str:
     bg_map = {"confirmed": "bg-emerald-50", "checked_in": "bg-blue-50", "reserved": "bg-amber-50"}
     header_bg = bg_map.get(state, "bg-stone-50")
     entry_name = entry.name if entry else "Ticket"
-    back_href = url_for("tickets.defpage_my_tickets")
+    back_href = url_for("defpage_my_tickets")
 
     # Badge with larger sizing
     badge = _ticket_state_badge_html(state).replace('px-2 py-0.5 text-xs', 'px-3 py-1 text-sm')
@@ -2165,7 +2165,7 @@ def render_slots_table(slots, calendar) -> str:
     rows_html = ""
     if slots:
         for s in slots:
-            slot_href = url_for("calendar.slots.slot.defpage_slot_detail", calendar_slug=cal_slug, slot_id=s.id)
+            slot_href = url_for("defpage_slot_detail", calendar_slug=cal_slug, slot_id=s.id)
             del_url = url_for("calendar.slots.slot.slot_delete", calendar_slug=cal_slug, slot_id=s.id)
             desc = getattr(s, "description", "") or ""
 
@@ -2309,7 +2309,7 @@ def render_buy_result(entry, created_tickets, remaining, cart_count) -> str:
 
     tickets_html = ""
     for ticket in created_tickets:
-        href = url_for("tickets.defpage_ticket_detail", code=ticket.code)
+        href = url_for("defpage_ticket_detail", code=ticket.code)
         tickets_html += sx_call("events-buy-result-ticket",
                                href=href, code_short=ticket.code[:12] + "...")
 
@@ -2319,7 +2319,7 @@ def render_buy_result(entry, created_tickets, remaining, cart_count) -> str:
         remaining_html = sx_call("events-buy-result-remaining",
                                 text=f"{remaining} ticket{r_suffix} remaining")
 
-    my_href = url_for("tickets.defpage_my_tickets")
+    my_href = url_for("defpage_my_tickets")
 
     return cart_html + sx_call("events-buy-result",
                               entry_id=str(entry.id),
@@ -2411,7 +2411,7 @@ def _ticket_adjust_controls(csrf, adjust_url, target, entry_id, count, *, ticket
         return _adj_form(1, sx_call("events-adjust-cart-plus"),
                          extra_cls="flex items-center")
 
-    my_tickets_href = url_for("tickets.defpage_my_tickets")
+    my_tickets_href = url_for("defpage_my_tickets")
     minus = _adj_form(count - 1, sx_call("events-adjust-minus"))
     cart_icon = sx_call("events-adjust-cart-icon",
                        href=my_tickets_href, count=str(count))