Move RIO hardware + firmware archive to the TeslaRel410 repo

The physical RIO board docs (photos, schematics, GAL decode) and the
board firmware (dumps, disassembly, make_patch.py, RIO 4.3 + FastRIO
images, analysis, testlogs) describe hardware shared across all Tesla
cockpits with a lifecycle independent of this Windows app — a
native-game-only cabinet runs the firmware and never touches RIOjoy.
They now live in TeslaRel410/restoration/{rio-hardware,rio-firmware}
with full history preserved (git subtree).

Kept here: docs/PROTOCOL.md (this app's interface contract) and the
RioSerialMonitor bench harness (--mash/--e0test, C# on RioJoy.Core).
README + code comments now point at the TeslaRel410 archive.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tools/RioSerialMonitor/MashTest.cs

@@ -7,8 +7,8 @@ namespace RioSerialMonitor;
 
 /// <summary>
 /// Instrumented firmware mash test (the RIO_TAP protocol, mechanized) for
-/// validating the RIOv4.2 reply-latch wedge patch — see
-/// rio-firmware/RIOv4_2-ANALYSIS.md "Validation plan".
+/// validating the RIOv4.2 reply-latch wedge patch — see the firmware
+/// analysis in the TeslaRel410 repo (restoration/rio-firmware/RIOv4_2-ANALYSIS.md).
 ///
 /// Runs the live link with the app's own &gt;5s reset-recovery DISABLED (so a
 /// board wedge stays observable instead of being revived by our watchdog),