Add Clumsy plugins and dual-vehicle fleet sync demo.

Restructure into DiffWheel/MultiWheel folders, add DiffWheelC and MultiWheelC with MovementTests, FleetRemote multi-vehicle manual sync, deploy templates, and documentation. Update dependency paths to D:\MDCS\Release and mirror motor feedback in MotorRoutine for simulation.

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

DiffWheel/DiffWheelM/Remote.cs

@@ -0,0 +1,31 @@
+using CartActivator;
+
+namespace DiffWheelM;
+
+public class Remote : ManualController<CartDefinition>
+{
+    [AsControlItem(name = "速度摇杆", keyboard = "Up,Down,Left,Right", joystick = "Axis0,Axis1")]
+    public Stick Direction;
+
+    [AsControlItem(name = "速度比例", keyboard = "Q,W")]
+    public Throttle SpeedRatio;
+
+    public override void Operation()
+    {
+        var maxSpeed = Math.Max(0, cart.MaxManualSpeed);
+        var speedRatio = Math.Clamp(SpeedRatio.val, 0, 1);
+
+        var left = Direction.y - Direction.x;
+        var right = Direction.y + Direction.x;
+        var wheelScale = Math.Max(1, Math.Max(Math.Abs(left), Math.Abs(right)));
+
+        left = left / wheelScale * maxSpeed * speedRatio;
+        right = right / wheelScale * maxSpeed * speedRatio;
+
+        cart.SpeedLeft = Math.Clamp(left, -maxSpeed, maxSpeed);
+        cart.SpeedRight = Math.Clamp(right, -maxSpeed, maxSpeed);
+
+        statusText = $"L={cart.SpeedLeft:0.000}m/s, R={cart.SpeedRight:0.000}m/s";
+    }
+}
+