Delete account/sx/sx_components.py — all rendering now in .sx

Phase 1 of zero-Python rendering: account service.

- Auth pages (login, device, check-email) use _render_auth_page() helper
  calling render_to_sx() + full_page_sx() directly in routes
- Newsletter toggle POST renders inline via render_to_sx()
- Newsletter page helper returns data dict; defpage :data slot fetches,
  :content slot renders via ~account-newsletters-content defcomp
- Fragment page uses (frag ...) IO primitive directly in .sx
- Defpage _eval_slot now uses async_eval_slot_to_sx which expands
  component bodies server-side (executing IO) but serializes tags as SX
- Fix pre-existing OOB ParseError: _eval_slot was producing HTML instead
  of s-expressions for component content slots
- Fix market url_for endpoint: defpage_market_home (app-level, not blueprint)
- Fix events calendar nav: wrap multiple SX parts in fragment

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

account/app.py

@@ -1,6 +1,5 @@
 from __future__ import annotations
 import path_setup  # noqa: F401  # adds shared/ to sys.path
-import sx.sx_components as sx_components  # noqa: F401  # ensure Hypercorn --reload watches this file
 from pathlib import Path
 
 from quart import g, request
@@ -72,8 +71,9 @@ def create_app() -> "Quart":
         app.jinja_loader,
     ])
 
-    # Setup defpage routes
-    import sx.sx_components  # noqa: F811 — ensure components loaded
+    # Load .sx component files and setup defpage routes
+    from shared.sx.jinja_bridge import load_service_components
+    load_service_components(str(Path(__file__).resolve().parent), service_name="account")
     from sxc.pages import setup_account_pages
     setup_account_pages()