비복제 선제조치: 권한 모드 정규화에서 외부 제품 고유 별칭 제거

- PermissionModeCatalog를 AX 고유 모드 어휘(Ask/Plan/Auto/Deny)만 처리하도록 단순화

- 외부 제품 특화 별칭 문자열(default/acceptEdits/dontAsk/bypassPermissions) 제거

- 주석/설명도 AX-native 기준으로 정리

- 검증: dotnet build 경고0 오류0, dotnet test 374/374 통과

src/AxCopilot/Services/Agent/PermissionModeCatalog.cs

@@ -2,7 +2,7 @@
 
 /// <summary>
 /// AX Agent permission mode constants and normalization helpers.
-/// Accepts legacy Ask/Auto/Deny values plus claw-code style aliases.
+/// Uses AX-native permission vocabulary only.
 /// </summary>
 public static class PermissionModeCatalog
 {
@@ -21,7 +21,7 @@ public static class PermissionModeCatalog
 
     /// <summary>
     /// Normalize global permission mode.
-    /// Supported aliases: ask/auto/deny/plan plus default, acceptEdits, dontAsk, bypassPermissions.
+    /// Supported values: ask/plan/auto/deny (case-insensitive).
     /// </summary>
     public static string NormalizeGlobalMode(string? value)
     {
@@ -31,13 +31,9 @@ public static class PermissionModeCatalog
         return value.Trim().ToLowerInvariant() switch
         {
             "ask" => Ask,
-            "default" => Ask,
             "plan" => Plan,
             "auto" => Auto,
-            "acceptedits" => Auto,
-            "dontask" => Auto,
             "deny" => Deny,
-            "bypasspermissions" => Deny,
             _ => Ask,
         };
     }