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>

cart/bp/cart/global_routes.py

@@ -56,9 +56,9 @@ def register(url_prefix: str) -> Blueprint:
 
         if request.headers.get("SX-Request") == "true" or request.headers.get("HX-Request") == "true":
             # Redirect to overview for HTMX
-            return redirect(url_for("cart_overview.defpage_cart_overview"))
+            return redirect(url_for("defpage_cart_overview"))
 
-        return redirect(url_for("cart_overview.defpage_cart_overview"))
+        return redirect(url_for("defpage_cart_overview"))
 
     @bp.post("/quantity/<int:product_id>/")
     async def update_quantity(product_id: int):
@@ -137,7 +137,7 @@ def register(url_prefix: str) -> Blueprint:
         tickets = await get_ticket_cart_entries(g.s)
 
         if not cart and not calendar_entries and not tickets:
-            return redirect(url_for("cart_overview.defpage_cart_overview"))
+            return redirect(url_for("defpage_cart_overview"))
 
         product_total = total(cart) or 0
         calendar_amount = calendar_total(calendar_entries) or 0
@@ -145,7 +145,7 @@ def register(url_prefix: str) -> Blueprint:
         cart_total = product_total + calendar_amount + ticket_amount
 
         if cart_total <= 0:
-            return redirect(url_for("cart_overview.defpage_cart_overview"))
+            return redirect(url_for("defpage_cart_overview"))
 
         try:
             page_config = await resolve_page_config(g.s, cart, calendar_entries, tickets)

cart/bp/cart/overview_routes.py

@@ -3,24 +3,9 @@
 
 from __future__ import annotations
 
-from quart import Blueprint, g, request
-
-from .services import get_cart_grouped_by_page
+from quart import Blueprint
 
 
 def register(url_prefix: str) -> Blueprint:
     bp = Blueprint("cart_overview", __name__, url_prefix=url_prefix)
-
-    @bp.before_request
-    async def _prepare_page_data():
-        """Load overview data for defpage route."""
-        endpoint = request.endpoint or ""
-        if not endpoint.endswith("defpage_cart_overview"):
-            return
-        from shared.sx.page import get_template_context
-        from sx.sx_components import _overview_main_panel_sx
-        page_groups = await get_cart_grouped_by_page(g.s)
-        ctx = await get_template_context()
-        g.overview_content = _overview_main_panel_sx(page_groups, ctx)
-
     return bp

cart/bp/cart/page_routes.py

@@ -19,26 +19,6 @@ from .services import current_cart_identity
 def register(url_prefix: str) -> Blueprint:
     bp = Blueprint("page_cart", __name__, url_prefix=url_prefix)
 
-    @bp.before_request
-    async def _prepare_page_data():
-        """Load page cart data for defpage route."""
-        endpoint = request.endpoint or ""
-        if not endpoint.endswith("defpage_page_cart_view"):
-            return
-        post = g.page_post
-        cart = await get_cart_for_page(g.s, post.id)
-        cal_entries = await get_calendar_entries_for_page(g.s, post.id)
-        page_tickets = await get_tickets_for_page(g.s, post.id)
-        ticket_groups = group_tickets(page_tickets)
-
-        from shared.sx.page import get_template_context
-        from sx.sx_components import _page_cart_main_panel_sx
-        ctx = await get_template_context()
-        g.page_cart_content = _page_cart_main_panel_sx(
-            ctx, cart, cal_entries, page_tickets, ticket_groups,
-            total, calendar_total, ticket_total,
-        )
-
     @bp.post("/checkout/")
     async def page_checkout():
         post = g.page_post
@@ -48,7 +28,7 @@ def register(url_prefix: str) -> Blueprint:
         page_tickets = await get_tickets_for_page(g.s, post.id)
 
         if not cart and not cal_entries and not page_tickets:
-            return redirect(url_for("page_cart.defpage_page_cart_view"))
+            return redirect(url_for("defpage_page_cart_view"))
 
         product_total_val = total(cart) or 0
         calendar_amount = calendar_total(cal_entries) or 0
@@ -56,7 +36,7 @@ def register(url_prefix: str) -> Blueprint:
         cart_total = product_total_val + calendar_amount + ticket_amount
 
         if cart_total <= 0:
-            return redirect(url_for("page_cart.defpage_page_cart_view"))
+            return redirect(url_for("defpage_page_cart_view"))
 
         ident = current_cart_identity()
 

cart/bp/orders/routes.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from quart import Blueprint, g, render_template, redirect, url_for, make_response
+from quart import Blueprint, g, redirect, url_for, make_response
 from sqlalchemy import select, func, or_, cast, String, exists
 from sqlalchemy.orm import selectinload
 

cart/bp/page_admin/routes.py

@@ -13,23 +13,6 @@ from shared.sx.helpers import sx_response
 def register():
     bp = Blueprint("page_admin", __name__)
 
-    @bp.before_request
-    async def _prepare_page_data():
-        """Pre-render admin content for defpage routes."""
-        endpoint = request.endpoint or ""
-        if request.method != "GET":
-            return
-        if endpoint.endswith("defpage_cart_admin"):
-            from shared.sx.page import get_template_context
-            from sx.sx_components import _cart_admin_main_panel_sx
-            ctx = await get_template_context()
-            g.cart_admin_content = _cart_admin_main_panel_sx(ctx)
-        elif endpoint.endswith("defpage_cart_payments"):
-            from shared.sx.page import get_template_context
-            from sx.sx_components import _cart_payments_main_panel_sx
-            ctx = await get_template_context()
-            g.cart_payments_content = _cart_payments_main_panel_sx(ctx)
-
     @bp.put("/payments/")
     @require_admin
     async def update_sumup(**kwargs):