feat(mcp): Dabit.Mcp 초기 공개 (리네임 + colors 수정 + scroll 검증)

- refactor: DabitChe.Mcp → Dabit.Mcp (namespace, csproj, exe 모두)
- fix: display_message colors를 쉼표 구분 문자열로 변경 (ModelContextProtocol 1.3.0 배열 바인딩 버그 우회)
- docs: scroll 4방향(left/right/up/down) 실기 검증 완료 (DIBD600T V3.6.1)

20 도구 (읽기 4 + 콘텐츠 2 + 설정 14), stdio 전송, Windows exe.
실기 검증: scroll/fill_screen 8색/display_message 글자별색 모두 정상.

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

Dabit.Mcp/Tools/TimeTools.cs

@@ -0,0 +1,50 @@
+using System.ComponentModel;
+using Dabit.Mcp.Services;
+using DibdProtocol.Protocol;
+using Microsoft.Extensions.Logging;
+using ModelContextProtocol.Server;
+
+namespace Dabit.Mcp.Tools;
+
+/// <summary>컨트롤러 시각 동기화 도구. ⚠️ 쓰기.</summary>
+[McpServerToolType]
+public sealed class TimeTools
+{
+    private readonly LedControlService _led;
+    private readonly ILogger<TimeTools> _log;
+
+    public TimeTools(LedControlService led, ILogger<TimeTools> log)
+    {
+        _led = led;
+        _log = log;
+    }
+
+    // 정본 SettingsViewModel: ToBcd(v) = (v/10*16)+(v%10). 26 → 0x26.
+    private static byte ToBcd(int v) => (byte)(v / 10 * 16 + v % 10);
+
+    private static string KoreanDow(DayOfWeek d) => d switch
+    {
+        DayOfWeek.Sunday => "일", DayOfWeek.Monday => "월", DayOfWeek.Tuesday => "화",
+        DayOfWeek.Wednesday => "수", DayOfWeek.Thursday => "목", DayOfWeek.Friday => "금",
+        _ => "토",
+    };
+
+    [McpServerTool]
+    [Description("컨트롤러의 시각(RTC)을 현재 PC 시간으로 동기화한다. ⚠️ 쓰기·설정 저장.")]
+    public async Task<string> SyncControllerTime(CancellationToken ct = default)
+    {
+        var now = DateTime.Now;
+        // 정본 0x47: [yy(BCD), MM(BCD), dd(BCD), dow(raw 0=일~6=토), HH(BCD), mm(BCD), ss(BCD)]
+        byte[] payload =
+        {
+            ToBcd(now.Year % 100), ToBcd(now.Month), ToBcd(now.Day),
+            (byte)(int)now.DayOfWeek,
+            ToBcd(now.Hour), ToBcd(now.Minute), ToBcd(now.Second),
+        };
+        var resp = await _led.SendHexAsync(HexCommand.SyncTime, payload, ct, 5000);
+        var (ok, msg) = LedControlService.CheckWriteStatus(HexCommand.SyncTime, resp);
+        return ok
+            ? $"시간 동기화 완료: {now:yyyy-MM-dd HH:mm:ss} ({KoreanDow(now.DayOfWeek)})."
+            : $"시간 동기화 실패 — {msg}";
+    }
+}