Add assetfix, transmogfix, minimapicons modules; fix assetfix disk-vs-MPQ priority

Assetfix: hook CheckFileExistence to serve loose Data\ files. The original
flags|1 approach failed because game paths contain backslashes, causing
CheckFileExistence to skip BuildFilePath and check the raw path (no Data\
prefix). Fix: write the correct Data\-prefixed disk path to the output buffer
directly and return 1, bypassing the original function for hash map hits.
This preserves hook chaining (filename argument is never transformed).

Also adds transmogfix (transmog update coalescing), minimapicons (stub),
new build options for all three modules, mutex-based multi-DLL safety,
embed .skin data into .m2 models, and various module improvements.

src/main.zig

@@ -10,6 +10,9 @@ const build_opts = struct {
     const markers = @import("build_options").enable_markers;
     const framecrash = @import("build_options").enable_framecrash;
     const combatlog = @import("build_options").enable_combatlog;
+    const minimapicons = @import("build_options").enable_minimapicons;
+    const transmogfix = @import("build_options").enable_transmogfix;
+    const assetfix = @import("build_options").enable_assetfix;
 };
 
 // Conditional module imports
@@ -19,6 +22,9 @@ const outline = if (build_opts.outline) @import("outline/api.zig") else struct {
 const markers = if (build_opts.markers) @import("markers/markers.zig") else struct {};
 const framecrash = if (build_opts.framecrash) @import("framecrash/framecrash.zig") else struct {};
 const combatlog = if (build_opts.combatlog) @import("combatlog/combatlog.zig") else struct {};
+const minimapicons = if (build_opts.minimapicons) @import("minimapicons/minimapicons.zig") else struct {};
+const transmogfix = if (build_opts.transmogfix) @import("transmogfix/transmogfix.zig") else struct {};
+const assetfix = if (build_opts.assetfix) @import("assetfix/assetfix.zig") else struct {};
 
 const WINAPI = std.builtin.CallingConvention.winapi;
 const fc: std.builtin.CallingConvention = .{ .x86_fastcall = .{} };
@@ -312,12 +318,6 @@ const markers_spells_assets = if (build_opts.markers) [_]FileEntry{
     .{ .name = "Raid_UI_FX_Green.m2", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Green.m2") },
     .{ .name = "Raid_UI_FX_Purple.m2", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Purple.m2") },
     .{ .name = "Raid_UI_FX_Red.m2", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Red.m2") },
-    // Skin files
-    .{ .name = "Raid_UI_FX_Yellow00.skin", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Yellow00.skin") },
-    .{ .name = "Raid_UI_FX_Cyan00.skin", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Cyan00.skin") },
-    .{ .name = "Raid_UI_FX_Green00.skin", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Green00.skin") },
-    .{ .name = "Raid_UI_FX_Purple00.skin", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Purple00.skin") },
-    .{ .name = "Raid_UI_FX_Red00.skin", .data = @embedFile("markers/assets/Spells/Raid_UI_FX_Red00.skin") },
     // Per-model raid target icon textures
     .{ .name = "RaidTarget_Star.blp", .data = @embedFile("markers/assets/Spells/RaidTarget_Star.blp") },
     .{ .name = "RaidTarget_Square.blp", .data = @embedFile("markers/assets/Spells/RaidTarget_Square.blp") },
@@ -687,18 +687,10 @@ fn cleanupFileHandleDetour(file_ctx: u32) callconv(sc) void {
 fn loadModelAsyncDetour(model: u32, _edx: u32, file_handle: u32, should_use_callback: u32) callconv(.c) u32 {
     _ = _edx;
 
-    // Debug: log every call to confirm the hook is firing
-    con.fmt("[file] loadModelAsync: model=0x{x} fh=0x{x} cb={d}\n", .{ model, file_handle, should_use_callback });
-    con.fmt("[file]   fh type={d} handle=0x{x} embed=0x{x} isFake={}\n", .{
-        hook.readMem(u32, file_handle),
-        hook.readMem(u32, file_handle + 0x04),
-        hook.readMem(u32, file_handle + 0x30),
-        isFakeFileContext(file_handle),
-    });
-
     // file_handle IS the file context address directly (Ghidra shows pointer* but
     // the assembly pushes it directly to GetFileSizeFromHandle — no dereference)
     if (isFakeFileContext(file_handle)) {
+        con.fmt("[file] loadModelAsync: model=0x{x} fh=0x{x} cb={d}\n", .{ model, file_handle, should_use_callback });
         const data_ptr = hook.readMem(u32, file_handle + 0x30);
         const data_size = hook.readMem(u32, file_handle + 0x34);
         con.fmt("[file]   embed_ptr=0x{x} embed_size={d}\n", .{ data_ptr, data_size });
@@ -993,12 +985,21 @@ fn install() void {
     _ = file_hook.install(0x648620, 6, @intFromPtr(&loadFileDetour), &.{});
     _ = lsf_hook.install(0x490250, 6, @intFromPtr(&loadScriptFunctionsDetour), &.{1});
 
+    if (build_opts.assetfix) {
+        _ = assetfix.installHooks();
+    }
     if (build_opts.framecrash) {
         framecrash.installHooks();
     }
     if (build_opts.combatlog) {
         combatlog.installHooks();
     }
+    if (build_opts.transmogfix) {
+        _ = transmogfix.installHooks();
+    }
+    if (build_opts.minimapicons) {
+        minimapicons.installHooks();
+    }
 
     if (load_addons_hook.prepare(0x51F600, 7, &.{})) {
         const thunk = load_addons_hook.mem.? + 32;
@@ -1037,6 +1038,15 @@ fn uninstall() void {
     if (build_opts.combatlog) {
         combatlog.removeHooks();
     }
+    if (build_opts.minimapicons) {
+        minimapicons.removeHooks();
+    }
+    if (build_opts.transmogfix) {
+        transmogfix.removeHooks();
+    }
+    if (build_opts.assetfix) {
+        assetfix.removeHooks();
+    }
 
     load_addons_hook.remove();
     lsf_hook.remove();