fix(systemservice): stub notice-screen skip flag setters (#549)

Settings probes Set/DisableNoticeScreenSkipFlagAutoSet; unresolved
NOT_FOUND can stall the SaveModTime/Load path.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/SharpEmu.Libs/SystemService/SystemServiceExports.cs

@@ -45,6 +45,25 @@ public static class SystemServiceExports
             : ctx.SetReturn((int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
     }
 
+    [SysAbiExport(
+        Nid = "8Lo6Zv94aho",
+        ExportName = "sceSystemServiceDisableNoticeScreenSkipFlagAutoSet",
+        Target = Generation.Gen5,
+        LibraryName = "libSceSystemService")]
+    public static int SystemServiceDisableNoticeScreenSkipFlagAutoSet(CpuContext ctx) =>
+        ctx.SetReturn(0);
+
+    // Settings entry calls this immediately before spawning SaveModTime/Load
+    // threads. An unresolved stub returns NOT_FOUND and the title can stall in
+    // that path; accept the write and report success.
+    [SysAbiExport(
+        Nid = "Q3utJvma4Mo",
+        ExportName = "sceSystemServiceSetNoticeScreenSkipFlag",
+        Target = Generation.Gen5,
+        LibraryName = "libSceSystemService")]
+    public static int SystemServiceSetNoticeScreenSkipFlag(CpuContext ctx) =>
+        ctx.SetReturn(0);
+
     [SysAbiExport(
         Nid = "4veE0XiIugA",
         ExportName = "sceSystemServiceGetMainAppTitleId",