feat: add ERP agent pet bridge and startup guide

插件库/Lskj.AgentBridge/BridgeUtf8Codec.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Text;
+
+namespace Lskj.AgentBridge
+{
+    /// <summary>
+    /// The bridge protocol is UTF-8 without replacement fallbacks. Silently
+    /// normalizing malformed bytes or unmatched UTF-16 surrogates could change
+    /// identifiers or business text after a caller calculated its binding.
+    /// </summary>
+    internal static class BridgeUtf8Codec
+    {
+        private static readonly Encoding StrictUtf8 =
+            new UTF8Encoding(false, true);
+
+        internal static string Decode(byte[] source)
+        {
+            if (source == null) throw new ArgumentNullException("source");
+            return StrictUtf8.GetString(source);
+        }
+
+        internal static byte[] Encode(string source)
+        {
+            if (source == null) throw new ArgumentNullException("source");
+            return StrictUtf8.GetBytes(source);
+        }
+    }
+}