Replace delimiters with unicode shapes

tools/mcp-test.py

@@ -15,6 +15,15 @@ HOST = "localhost"
 PORT = 9847
 TIMEOUT = 120
 
+# Map ASCII characters to the Unicode geometric delimiters used by the plugin.
+DELIMITER_MAP = str.maketrans({
+    '<': '◂',
+    '>': '▸',
+    '*': '◆',
+    '.': '◦',
+    '|': '│',
+})
+
 def main():
     args = sys.argv[1:]
     if not args:
@@ -35,6 +44,11 @@ def main():
                 pass
         msg[key] = value
 
+    # Translate ASCII delimiter shortcuts to Unicode geometric shapes.
+    for key, value in msg.items():
+        if isinstance(value, str):
+            msg[key] = value.translate(DELIMITER_MAP)
+
     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     sock.settimeout(TIMEOUT)
     try: