Remote: match the old remote's hardware; old remote code in LEGACY

- LEGACY/remote/teensy/: old remote sketch from
  https://mangavalk.com/Hexapod/remote.git @ 492dece (reference only).
- remote/Config.h: sticks on A0-A5, Nextion on Serial1 (0/1), as in the
  old sketch; MPU6050 moved to Wire2 (25/24) since A4/A5 are Wire's pins.
- NextionUI: controls on a vscope-global "control" page added to the
  old HMI; keeps the old t1 status texts; the old page-1 b2 button (and
  serial 'U') enter Nextion upload passthrough, following the PC's baud.
- Docs: NEXTION.md, remote README wiring, CLAUDE.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-current/LEGACY/remote/teensy/TransferDataStructure.h

@@ -0,0 +1,38 @@
+#ifndef dataStruct
+#define dataStruct
+
+struct __attribute__((__packed__)) dataStruct2
+{
+  bool STOP = false;
+
+  float walkSpeed = 10; //step size
+  float walkSpeed2 = 0; //gate speed
+  float walkRotation = 0 ;
+  float walkDirection = 0;
+
+  float tranform[3] = {0, 0, 0};
+  float tranform2[3] = {0, 0, 0};
+  float rotation[3] = {0, 0, 0};
+
+  bool remotePasstroughControl = 0;
+  float servoPositions[18] = {
+    90, 90, 90,
+    90, 90, 90,
+    90, 90, 90,
+
+    90, 90, 90,
+    90, 90, 90,
+    90, 90, 90
+  };
+} dataStruct;
+
+
+//template<size_t ... T> struct print_ct {
+//  print_ct() {
+//    static_assert(sizeof...(T) == -1, "");
+//  }
+//};
+//
+//print_ct< sizeof(dataStruct2), alignof(dataStruct2) > v;
+
+#endif