Phase 6: Replace render_template() with s-expression rendering in all GET routes

Migrate ~52 GET route handlers across all 7 services from Jinja
render_template() to s-expression component rendering. Each service
gets a sexp_components.py with page/oob/cards render functions.

- Add per-service sexp_components.py (account, blog, cart, events,
  federation, market, orders) with full page, OOB, and pagination
  card rendering
- Add shared/sexp/helpers.py with call_url, root_header_html,
  full_page, oob_page utilities
- Update all GET routes to use get_template_context() + render fns
- Fix get_template_context() to inject Jinja globals (URL helpers)
- Add qs_filter to base_context for sexp filter URL building
- Mount sexp_components.py in docker-compose.dev.yml for all services
- Import sexp_components in app.py for Hypercorn --reload watching
- Fix route_prefix import (shared.utils not shared.infrastructure.urls)
- Fix federation choose-username missing actor in context
- Fix market page_markets missing post in context

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

blog/bp/blog/admin/routes.py

@@ -57,10 +57,15 @@ def register():
 
         ctx = {"groups": groups, "unassigned_tags": unassigned}
 
+        from shared.sexp.page import get_template_context
+        from sexp_components import render_tag_groups_page, render_tag_groups_oob
+
+        tctx = await get_template_context()
+        tctx.update(ctx)
         if not is_htmx_request():
-            return await render_template("_types/blog/admin/tag_groups/index.html", **ctx)
+            return await make_response(await render_tag_groups_page(tctx))
         else:
-            return await render_template("_types/blog/admin/tag_groups/_oob_elements.html", **ctx)
+            return await make_response(await render_tag_groups_oob(tctx))
 
     @bp.post("/")
     @require_admin
@@ -117,10 +122,15 @@ def register():
             "assigned_tag_ids": assigned_tag_ids,
         }
 
+        from shared.sexp.page import get_template_context
+        from sexp_components import render_tag_group_edit_page, render_tag_group_edit_oob
+
+        tctx = await get_template_context()
+        tctx.update(ctx)
         if not is_htmx_request():
-            return await render_template("_types/blog/admin/tag_groups/edit.html", **ctx)
+            return await make_response(await render_tag_group_edit_page(tctx))
         else:
-            return await render_template("_types/blog/admin/tag_groups/_edit_oob.html", **ctx)
+            return await make_response(await render_tag_group_edit_oob(tctx))
 
     @bp.post("/<int:id>/")
     @require_admin

blog/bp/blog/routes.py

@@ -153,10 +153,15 @@ def register(url_prefix, title):
           ctx["page_cart_count"] = page_summary.count + page_summary.calendar_count + page_summary.ticket_count
           ctx["page_cart_total"] = float(page_summary.total + page_summary.calendar_total + page_summary.ticket_total)
 
+      from shared.sexp.page import get_template_context
+      from sexp_components import render_home_page, render_home_oob
+
+      tctx = await get_template_context()
+      tctx.update(ctx)
       if not is_htmx_request():
-          html = await render_template("_types/home/index.html", **ctx)
+          html = await render_home_page(tctx)
       else:
-          html = await render_template("_types/home/_oob_elements.html", **ctx)
+          html = await render_home_oob(tctx)
       return await make_response(html)
 
     @blogs_bp.get("/index")
@@ -185,12 +190,17 @@ def register(url_prefix, title):
               "tag_groups": [],
               "posts": data.get("pages", []),
           }
+          from shared.sexp.page import get_template_context
+          from sexp_components import render_blog_page, render_blog_oob, render_blog_page_cards
+
+          tctx = await get_template_context()
+          tctx.update(context)
           if not is_htmx_request():
-              html = await render_template("_types/blog/index.html", **context)
+              html = await render_blog_page(tctx)
           elif q.page > 1:
-              html = await render_template("_types/blog/_page_cards.html", **context)
+              html = await render_blog_page_cards(tctx)
           else:
-              html = await render_template("_types/blog/_oob_elements.html", **context)
+              html = await render_blog_oob(tctx)
           return await make_response(html)
 
       # Default: posts listing
@@ -221,28 +231,33 @@ def register(url_prefix, title):
           "drafts": q.drafts if show_drafts else None,
       }
 
-      # Determine which template to use based on request type and pagination
+      from shared.sexp.page import get_template_context
+      from sexp_components import render_blog_page, render_blog_oob, render_blog_cards
+
+      tctx = await get_template_context()
+      tctx.update(context)
       if not is_htmx_request():
-          # Normal browser request: full page with layout
-          html = await render_template("_types/blog/index.html", **context)
+          html = await render_blog_page(tctx)
       elif q.page > 1:
-          # HTMX pagination: just blog cards + sentinel
-          html = await render_template("_types/blog/_cards.html", **context)
+          html = await render_blog_cards(tctx)
       else:
-          # HTMX navigation (page 1): main panel + OOB elements
-          #main_panel = await render_template("_types/blog/_main_panel.html", **context)
-          html = await render_template("_types/blog/_oob_elements.html", **context)
-          #html = oob_elements + main_panel
+          html = await render_blog_oob(tctx)
 
       return await make_response(html)
 
     @blogs_bp.get("/new/")
     @require_admin
     async def new_post():
+      from shared.sexp.page import get_template_context
+      from sexp_components import render_new_post_page, render_new_post_oob
+
+      editor_html = await render_template("_types/blog_new/_main_panel.html")
+      tctx = await get_template_context()
+      tctx["editor_html"] = editor_html
       if not is_htmx_request():
-        html = await render_template("_types/blog_new/index.html")
+        html = await render_new_post_page(tctx)
       else:
-        html = await render_template("_types/blog_new/_oob_elements.html")
+        html = await render_new_post_oob(tctx)
       return await make_response(html)
 
     @blogs_bp.post("/new/")
@@ -312,10 +327,17 @@ def register(url_prefix, title):
     @blogs_bp.get("/new-page/")
     @require_admin
     async def new_page():
+      from shared.sexp.page import get_template_context
+      from sexp_components import render_new_post_page, render_new_post_oob
+
+      editor_html = await render_template("_types/blog_new/_main_panel.html", is_page=True)
+      tctx = await get_template_context()
+      tctx["editor_html"] = editor_html
+      tctx["is_page"] = True
       if not is_htmx_request():
-        html = await render_template("_types/blog_new/index.html", is_page=True)
+        html = await render_new_post_page(tctx)
       else:
-        html = await render_template("_types/blog_new/_oob_elements.html", is_page=True)
+        html = await render_new_post_oob(tctx)
       return await make_response(html)
 
     @blogs_bp.post("/new-page/")