feat(data): add daily note + week report entities and report settings

src/ClaudeDo.Data/Models/WeekReportEntity.cs

@@ -0,0 +1,10 @@
+namespace ClaudeDo.Data.Models;
+
+public sealed class WeekReportEntity
+{
+    public string Id { get; init; } = Guid.NewGuid().ToString();
+    public DateOnly StartDate { get; set; }
+    public DateOnly EndDate { get; set; }
+    public string Markdown { get; set; } = string.Empty;
+    public DateTime GeneratedAt { get; set; } = DateTime.UtcNow;
+}