Tech debt cleanup: update README, fix comments, sync shared submodule

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

bp/calendar_entry/routes.py

@@ -256,8 +256,7 @@ def register():
     async def get(entry_id: int, **rest):
         from shared.browser.app.utils.htmx import is_htmx_request
 
-        # TODO: Create _main_panel.html and _oob_elements.html for optimized HTMX
-        # For now, render full template for both HTMX and normal requests
+        # Full template for both HTMX and normal requests
         if not is_htmx_request():
           # Normal browser request: full page with layout
           html = await render_template(

bp/calendar_entry/services/ticket_operations.py

@@ -83,6 +83,5 @@ async def get_available_tickets(
     if entry.ticket_count is None:
         return None, None
 
-    # TODO: Subtract booked tickets when ticket booking is implemented
-    # For now, just return the total count
+    # Returns total count (booked tickets not yet subtracted)
     return entry.ticket_count, None