From 7dc03f3bc0670425dfa461fba59349e726cbe775 Mon Sep 17 00:00:00 2001
From: Chris Chen <yuanson.ch@gmail.com>
Date: Wed, 24 Jun 2026 11:17:19 -0700
Subject: [PATCH] docs(attendance): explain SetCountsAsync divergence from
 ExecuteUpdate path

---
 API/ROLAC.API/Services/MealAttendanceService.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/API/ROLAC.API/Services/MealAttendanceService.cs b/API/ROLAC.API/Services/MealAttendanceService.cs
index f986b31..c273838 100644
--- a/API/ROLAC.API/Services/MealAttendanceService.cs
+++ b/API/ROLAC.API/Services/MealAttendanceService.cs
@@ -84,6 +84,8 @@ public class MealAttendanceService : IMealAttendanceService
 
     public async Task<AttendanceCountsDto> SetCountsAsync(DateOnly date, int adult, int youth, int kid)
     {
+        // Single-editor back-office path, so a tracked load + SaveChanges is fine here; no need for the
+        // race-safe EnsureRowAsync + ExecuteUpdateAsync pattern, which the EF InMemory test provider can't run.
         var row = await _db.MealAttendances.FirstOrDefaultAsync(a => a.AttendanceDate == date);
         if (row is null)
         {