Migrate all apps to defpage declarative page routes

Replace Python GET page handlers with declarative defpage definitions in .sx
files across all 8 apps (sx docs, orders, account, market, cart, federation,
events, blog). Each app now has sxc/pages/ with setup functions, layout
registrations, page helpers, and .sx defpage declarations.

Core infrastructure: add g I/O primitive, PageDef support for auth/layout/
data/content/filter/aside/menu slots, post_author auth level, and custom
layout registration. Remove ~1400 lines of render_*_page/render_*_oob
boilerplate. Update all endpoint references in routes, sx_components, and
templates to defpage_* naming.

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

orders/sxc/pages/__init__.py

@@ -0,0 +1,201 @@
+"""Orders defpage setup — registers layouts, page helpers, and loads .sx pages."""
+from __future__ import annotations
+
+from typing import Any
+
+
+def setup_orders_pages() -> None:
+    """Register orders-specific layouts, page helpers, and load page definitions."""
+    _register_orders_layouts()
+    _register_orders_helpers()
+    _load_orders_page_files()
+
+
+def _load_orders_page_files() -> None:
+    """Load defpage definitions from orders/sxc/pages/*.sx."""
+    import os
+    from shared.sx.pages import load_page_dir
+    load_page_dir(os.path.dirname(__file__), "orders")
+
+
+# ---------------------------------------------------------------------------
+# Layouts
+# ---------------------------------------------------------------------------
+
+def _register_orders_layouts() -> None:
+    from shared.sx.layouts import register_custom_layout
+    register_custom_layout("orders", _orders_full, _orders_oob, _orders_mobile)
+    register_custom_layout("order-detail", _order_detail_full, _order_detail_oob, _order_detail_mobile)
+
+
+def _orders_full(ctx: dict, **kw: Any) -> str:
+    from shared.sx.helpers import root_header_sx, header_child_sx
+    from sx.sx_components import _auth_header_sx, _orders_header_sx
+
+    list_url = kw.get("list_url", "/")
+    root_hdr = root_header_sx(ctx)
+    inner = "(<> " + _auth_header_sx(ctx) + " " + _orders_header_sx(ctx, list_url) + ")"
+    return "(<> " + root_hdr + " " + header_child_sx(inner) + ")"
+
+
+def _orders_oob(ctx: dict, **kw: Any) -> str:
+    from shared.sx.helpers import root_header_sx, sx_call, SxExpr
+    from sx.sx_components import _auth_header_sx, _orders_header_sx
+
+    list_url = kw.get("list_url", "/")
+    auth_hdr = _auth_header_sx(ctx, oob=True)
+    auth_child_oob = sx_call("oob-header-sx",
+                             parent_id="auth-header-child",
+                             row=SxExpr(_orders_header_sx(ctx, list_url)))
+    root_hdr = root_header_sx(ctx, oob=True)
+    return "(<> " + auth_hdr + " " + auth_child_oob + " " + root_hdr + ")"
+
+
+def _orders_mobile(ctx: dict, **kw: Any) -> str:
+    from shared.sx.helpers import mobile_menu_sx, mobile_root_nav_sx
+    return mobile_menu_sx(mobile_root_nav_sx(ctx))
+
+
+def _order_detail_full(ctx: dict, **kw: Any) -> str:
+    from shared.sx.helpers import root_header_sx, sx_call, SxExpr
+    from sx.sx_components import _auth_header_sx, _orders_header_sx
+
+    list_url = kw.get("list_url", "/")
+    detail_url = kw.get("detail_url", "/")
+    root_hdr = root_header_sx(ctx)
+    order_row = sx_call(
+        "menu-row-sx",
+        id="order-row", level=3, colour="sky", link_href=detail_url,
+        link_label="Order", icon="fa fa-gbp",
+    )
+    detail_header = sx_call(
+        "order-detail-header-stack",
+        auth=SxExpr(_auth_header_sx(ctx)),
+        orders=SxExpr(_orders_header_sx(ctx, list_url)),
+        order=SxExpr(order_row),
+    )
+    return "(<> " + root_hdr + " " + detail_header + ")"
+
+
+def _order_detail_oob(ctx: dict, **kw: Any) -> str:
+    from shared.sx.helpers import root_header_sx, sx_call, SxExpr
+
+    detail_url = kw.get("detail_url", "/")
+    order_row_oob = sx_call(
+        "menu-row-sx",
+        id="order-row", level=3, colour="sky", link_href=detail_url,
+        link_label="Order", icon="fa fa-gbp", oob=True,
+    )
+    header_child_oob = sx_call("oob-header-sx",
+                               parent_id="orders-header-child",
+                               row=SxExpr(order_row_oob))
+    root_hdr = root_header_sx(ctx, oob=True)
+    return "(<> " + header_child_oob + " " + root_hdr + ")"
+
+
+def _order_detail_mobile(ctx: dict, **kw: Any) -> str:
+    from shared.sx.helpers import mobile_menu_sx, mobile_root_nav_sx
+    return mobile_menu_sx(mobile_root_nav_sx(ctx))
+
+
+# ---------------------------------------------------------------------------
+# Page helpers — Python functions callable from defpage expressions
+# ---------------------------------------------------------------------------
+
+def _register_orders_helpers() -> None:
+    from shared.sx.pages import register_page_helpers
+
+    register_page_helpers("orders", {
+        # Orders list
+        "orders-list-content": _h_orders_list_content,
+        "orders-list-filter": _h_orders_list_filter,
+        "orders-list-aside": _h_orders_list_aside,
+        "orders-list-url": _h_orders_list_url,
+        # Order detail
+        "order-detail-content": _h_order_detail_content,
+        "order-detail-filter": _h_order_detail_filter,
+        "order-detail-url": _h_order_detail_url,
+        "order-list-url-from-detail": _h_order_list_url_from_detail,
+    })
+
+
+def _h_orders_list_content():
+    from quart import g
+    d = getattr(g, "orders_page_data", None)
+    if not d:
+        from shared.sx.helpers import sx_call
+        return sx_call("order-empty-state")
+    from sx.sx_components import _orders_rows_sx, _orders_main_panel_sx
+    rows = _orders_rows_sx(d["orders"], d["page"], d["total_pages"],
+                           d["url_for_fn"], d["qs_fn"])
+    return _orders_main_panel_sx(d["orders"], rows)
+
+
+def _h_orders_list_filter():
+    from quart import g
+    from shared.sx.helpers import sx_call, SxExpr
+    from shared.sx.page import SEARCH_HEADERS_MOBILE
+    d = getattr(g, "orders_page_data", None)
+    search = d.get("search", "") if d else ""
+    search_count = d.get("search_count", "") if d else ""
+    search_mobile = sx_call("search-mobile",
+        current_local_href="/",
+        search=search or "",
+        search_count=search_count or "",
+        hx_select="#main-panel",
+        search_headers_mobile=SEARCH_HEADERS_MOBILE,
+    )
+    return sx_call("order-list-header", search_mobile=SxExpr(search_mobile))
+
+
+def _h_orders_list_aside():
+    from quart import g
+    from shared.sx.helpers import sx_call
+    from shared.sx.page import SEARCH_HEADERS_DESKTOP
+    d = getattr(g, "orders_page_data", None)
+    search = d.get("search", "") if d else ""
+    search_count = d.get("search_count", "") if d else ""
+    return sx_call("search-desktop",
+        current_local_href="/",
+        search=search or "",
+        search_count=search_count or "",
+        hx_select="#main-panel",
+        search_headers_desktop=SEARCH_HEADERS_DESKTOP,
+    )
+
+
+def _h_orders_list_url():
+    from quart import g
+    d = getattr(g, "orders_page_data", None)
+    return d["list_url"] if d else "/"
+
+
+def _h_order_detail_content():
+    from quart import g
+    d = getattr(g, "order_detail_data", None)
+    if not d:
+        return ""
+    from sx.sx_components import _order_main_sx
+    return _order_main_sx(d["order"], d["calendar_entries"])
+
+
+def _h_order_detail_filter():
+    from quart import g
+    d = getattr(g, "order_detail_data", None)
+    if not d:
+        return ""
+    from sx.sx_components import _order_filter_sx
+    return _order_filter_sx(d["order"], d["list_url"], d["recheck_url"],
+                            d["pay_url"], d["csrf_token"])
+
+
+def _h_order_detail_url():
+    from quart import g
+    d = getattr(g, "order_detail_data", None)
+    return d["detail_url"] if d else "/"
+
+
+def _h_order_list_url_from_detail():
+    from quart import g
+    d = getattr(g, "order_detail_data", None)
+    return d["list_url"] if d else "/"

orders/sxc/pages/orders.sx

@@ -0,0 +1,27 @@
+;; Orders app — declarative page definitions
+
+;; ---------------------------------------------------------------------------
+;; Orders list
+;; ---------------------------------------------------------------------------
+
+(defpage orders-list
+  :path "/"
+  :auth :public
+  :layout (:orders
+    :list-url (orders-list-url))
+  :filter (orders-list-filter)
+  :aside (orders-list-aside)
+  :content (orders-list-content))
+
+;; ---------------------------------------------------------------------------
+;; Order detail
+;; ---------------------------------------------------------------------------
+
+(defpage order-detail
+  :path "/<int:order_id>/"
+  :auth :public
+  :layout (:order-detail
+    :list-url (order-list-url-from-detail)
+    :detail-url (order-detail-url))
+  :filter (order-detail-filter)
+  :content (order-detail-content))