Remove MiniMax MCP support

app/commands/builtins.py

@@ -325,7 +325,7 @@ async def echo(ctx: "CommandContext") -> None:
 @command_registry.command(
     "ai",
     "Ask a configurable AI model",
-    usage=".ai / ..ai [N] [--img] [--model] prompt",
+    usage=".ai / ..ai [N] [--model] prompt",
     category="ai",
 ).shared()
 async def ai(ctx: "CommandContext") -> None:
@@ -363,7 +363,6 @@ async def ai(ctx: "CommandContext") -> None:
             AIInvocation(
                 context_messages=invocation.context_messages,
                 model_flags=[selected_alias],
-                use_image_understanding=invocation.use_image_understanding,
                 prompt=invocation.prompt,
             ),
         )