chore(forum): 장전브리핑 → 장전 시황 (게시판 표시명 + 자동발행 글 제목)

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

Application/Helpers/BoardSeeder.cs

@@ -36,7 +36,7 @@ public static class BoardSeeder
     /// <summary>장전 브리핑 게시판(Code="briefing")을 해석 — 없으면 공지 리스트로 lazy 시드하고 Board.ID 반환.</summary>
     public static Task<int> ResolveBriefingBoardIDAsync(IAppDbContext db, CancellationToken ct)
     {
-        return ResolveAsync(db, BriefingBoardCode, "장전브리핑", meta =>
+        return ResolveAsync(db, BriefingBoardCode, "장전 시황", meta =>
         {
             meta.List = new Domain.Entities.Forum.Boards.BoardMetaList { Layout = BoardLayout.Default, PerPage = 20 };
             meta.View = new Domain.Entities.Forum.Boards.BoardMetaView { AllowLike = true, AllowBookmark = true };

Application/Helpers/DailyBriefingComposer.cs

@@ -46,7 +46,7 @@ public static class DailyBriefingComposer
         }
 
         var body = await ComposeBodyAsync(db, ct);
-        var subject = $"[장전 브리핑] {briefingDate:yyyy-MM-dd}";
+        var subject = $"[장전 시황] {briefingDate:yyyy-MM-dd}";
 
         var boardID = await BoardSeeder.ResolveBriefingBoardIDAsync(db, ct);