feat(content+admin): home-events CRUD + comments moderation

- content-svc: home-events gains Create/Update/Delete + includeInactive list
  (POST/PUT/DELETE /v1/home-events, admin-gated; dates coerced to UTC)
- admin /admin/home-events: full CRUD for homepage hero event banners
- admin /admin/comments: list + approve/unapprove + delete (moderation)
- AdminResource: optional listQuery to fetch inactive rows for admin views

Fills the remaining legacy-admin gaps (home events, comments).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

services/content/FlatRender.ContentSvc/Models/Requests/Requests.cs

@@ -95,6 +95,25 @@ public record CreateMusicTrackRequest(
     int Sort
 );
 
+public record UpsertHomeEventRequest(
+    string? Title,
+    string? Subtitle,
+    string? Description,
+    string? Badge,
+    string? BadgeClass,
+    string? ButtonText,
+    string? ButtonUrl,
+    string? ButtonClass,
+    string? Color,
+    string? BackgroundColor,
+    string? TextColor,
+    string? Image,
+    bool IsActive = true,
+    int Sort = 0,
+    DateTime? StartsAt = null,
+    DateTime? EndsAt = null
+);
+
 public record UpdateMusicTrackRequest(
     string Name,
     string? Caption,