Baseline: Ausgangszustand vor Modularisierung

Erster Commit des bestehenden monolithischen WinForms-Copytraders,
inklusive der Alt-Backups (*.bak), damit diese dauerhaft in der
Historie rekonstruierbar bleiben. Threema-Lib unter libs/ wurde
vendored (nested .git entfernt).

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

libs/Threema-MsgApi-Net-Core/IcgSoftware.Threema.CoreMsgApi/Results/CapabilityResult.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace IcgSoftware.Threema.CoreMsgApi.Results
+{
+	/// <summary>
+	/// Result of a capability lookup
+	/// </summary>
+	public class CapabilityResult
+	{
+		private readonly string key;
+		private readonly string[] capabilities;
+
+		public CapabilityResult(string key, string[] capabilities)
+		{
+			this.key = key;
+			this.capabilities = capabilities;
+		}
+
+		public string Key
+		{
+			get { return key; }
+		}
+
+		/// <summary>
+		/// Get all capabilities as a string array.
+		/// </summary>
+		public string[] Capabilities
+		{
+			get { return capabilities; }
+		}
+
+		/// <summary>
+		/// Check whether the Threema ID can receive text
+		/// </summary>
+		public bool CanText
+		{
+			get { return this.Can("text"); }
+		}
+
+		/// <summary>
+		/// Check whether the Threema ID can receive images
+		/// </summary>
+		public bool CanImage
+		{
+			get { return this.Can("image"); }
+		}
+
+		/// <summary>
+		/// Check whether the Threema ID can receive videos
+		/// </summary>
+		public bool CanVideo
+		{
+			get { return this.Can("video"); }
+		}
+
+		/// <summary>
+		/// Check whether the Threema ID can receive audio
+		/// </summary>
+		public bool CanAudio
+		{
+			get { return this.Can("audio"); }
+		}
+
+		/// <summary>
+		/// Check whether the Threema ID can receive files
+		/// </summary>
+		public bool CanFile
+		{
+			get { return this.Can("file"); }
+		}
+
+		public override string ToString()
+		{
+			StringBuilder b = new StringBuilder();
+			b.Append(this.key).Append(": ");
+			for (int n = 0; n < this.capabilities.Length; n++) {
+				if (n > 0)
+				{
+					b.Append(",");
+				}
+				b.Append(this.capabilities[n]);
+			}
+			return b.ToString();
+		}
+
+		private bool Can(string key)
+		{
+			return this.capabilities.Any(k => k.Equals(key));
+		}
+	}
+}