fix: MSVC ABI, heap allocator, deferred timer - vanillafixes compat

- Restore MSVC ABI (was accidentally GNU since v0.6.0, broke .CRT section)
- Replace game allocator with Windows process heap for filecache and
  libdeflate malloc/free - game allocator not initialized during DllMain
  when injected via CreateRemoteThread
- Defer timer calibration (Sleep 500ms) to lateInit - blocks under
  loader lock during DllMain
- Remove exported malloc/free symbols from DLL
- Eliminate addObject compilation units for SSE files - direct @import
  with AVX target instead
- Heap-allocate filecache (was 9.3MB static BSS)
- Strip transform44 of performance/ externs, pure profiling only
- Rename performance/ to weirdperformance/ to match module convention
- Skip default-off modules in all-variants build step
- Remove dead debug vars and stride logging from particle_sse

src/main.zig

@@ -43,7 +43,7 @@ const transform44 = if (build_opts.transform44) @import("transform44/transform44
 const addonperf = if (build_opts.addonperf) @import("addonperf/addonperf.zig") else struct {};
 const ssemaths = if (build_opts.ssemaths) @import("ssemaths/ssemaths.zig") else struct {};
 const silicon = if (build_opts.silicon) @import("silicon/silicon.zig") else struct {};
-const weirdperformance = if (build_opts.weirdperformance) @import("performance/weirdperformance.zig") else struct {};
+const weirdperformance = if (build_opts.weirdperformance) @import("weirdperformance/weirdperformance.zig") else struct {};
 
 const module_active = @import("module_active.zig");
 
@@ -666,6 +666,9 @@ fn engineInitDetour() callconv(hook.cc.stdcall) void {
     if (build_opts.silicon) {
         silicon.lateInit();
     }
+    if (build_opts.weirdperformance) {
+        weirdperformance.lateInit();
+    }
 }
 
 // =============================================================================