Remove last Jinja fragment templates, use sx_components directly

Events fragment routes now call render_fragment_container_cards(),
render_fragment_account_tickets(), and render_fragment_account_bookings()
from sx_components instead of render_template(). Account sx_components
handles both SxExpr (text/sx) and HTML (text/html) fragment responses.

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

account/sx/sx_components.py

@@ -294,26 +294,49 @@ async def render_newsletters_oob(ctx: dict, newsletter_list: list) -> str:
 # Public API: Fragment pages
 # ---------------------------------------------------------------------------
 
-async def render_fragment_page(ctx: dict, page_fragment_html: str) -> str:
-    """Full page: fragment-provided content."""
+async def render_fragment_page(ctx: dict, page_fragment: str) -> str:
+    """Full page: fragment-provided content.
+
+    *page_fragment* may be sx source (from text/sx fragments wrapped in
+    SxExpr) or HTML (from text/html fragments).  Sx source is embedded
+    directly; HTML is wrapped in ``~rich-text``.
+    """
+    from shared.sx.parser import SxExpr
     hdr = root_header_sx(ctx)
     hdr_child = header_child_sx(_auth_header_sx(ctx))
     header_rows = "(<> " + hdr + " " + hdr_child + ")"
 
+    content = _fragment_content(page_fragment)
     return full_page_sx(ctx, header_rows=header_rows,
-                          content=f'(~rich-text :html "{_sx_escape(page_fragment_html)}")',
+                          content=content,
                           menu=_auth_nav_mobile_sx(ctx))
 
 
-async def render_fragment_oob(ctx: dict, page_fragment_html: str) -> str:
+async def render_fragment_oob(ctx: dict, page_fragment: str) -> str:
     """OOB response for fragment pages."""
     oobs = "(<> " + _auth_header_sx(ctx, oob=True) + " " + root_header_sx(ctx, oob=True) + ")"
 
+    content = _fragment_content(page_fragment)
     return oob_page_sx(oobs=oobs,
-                         content=f'(~rich-text :html "{_sx_escape(page_fragment_html)}")',
+                         content=content,
                          menu=_auth_nav_mobile_sx(ctx))
 
 
+def _fragment_content(frag: object) -> str:
+    """Convert a fragment response to sx content string.
+
+    SxExpr (from text/sx responses) is embedded as-is; plain strings
+    (from text/html) are wrapped in ``~rich-text``.
+    """
+    from shared.sx.parser import SxExpr
+    if isinstance(frag, SxExpr):
+        return frag.source
+    s = str(frag) if frag else ""
+    if not s:
+        return ""
+    return f'(~rich-text :html "{_sx_escape(s)}")'
+
+
 # ---------------------------------------------------------------------------
 # Public API: Auth pages (login, device)
 # ---------------------------------------------------------------------------