IOS LLE: checkpoint NAND conformance and diagnostic tooling

Preserve formatted NAND boot and Wii Remote pairing, add DMA/SRAM conformance tests and a Wii comparison probe. Keep P1 profiling tools and native update A/B evidence; reject the unhelpful targeted SRAM shortcut.

Source/Core/VideoCommon/PerformanceMetrics.cpp

@@ -9,6 +9,7 @@
 #include <implot.h>
 
 #include "Common/HookableEvent.h"
+#include "Common/PerformanceTrace.h"
 #include "Core/Config/GraphicsSettings.h"
 #include "Core/Core.h"
 #include "VideoCommon/VideoConfig.h"
@@ -24,6 +25,7 @@ PerformanceMetrics::PerformanceMetrics()
 
 void PerformanceMetrics::Reset()
 {
+  Common::PerformanceTrace::Marker("PerformanceMetricsReset");
   m_fps_counter.Reset();
   m_vps_counter.Reset();
 
@@ -38,11 +40,13 @@ void PerformanceMetrics::Reset()
 
 void PerformanceMetrics::CountFrame()
 {
+  Common::PerformanceTrace::Frame("produced");
   m_fps_counter.Count();
 }
 
 void PerformanceMetrics::CountVBlank()
 {
+  Common::PerformanceTrace::Frame("vblank");
   m_vps_counter.Count();
 }
 
@@ -62,6 +66,7 @@ void PerformanceMetrics::AdjustClockSpeed(s64 ticks, u32 new_ppc_clock, u32 old_
 
 void PerformanceMetrics::CountPerformanceMarker(s64 core_ticks, u32 ticks_per_second)
 {
+  Common::PerformanceTrace::Frame("guest-clock", core_ticks, ticks_per_second);
   const auto clock_time = Clock::now();
   const auto work_time = clock_time - m_time_sleeping;