Add transform44 module stub for M2 bone transform optimization

Wires transform44 into build system and main.zig module table.
Module skeleton with mutex/logger, no hooks yet — analysis in progress.

src/main.zig

@@ -18,6 +18,7 @@ const build_opts = struct {
     const bigcursor = @import("build_options").enable_bigcursor;
     const clickthrough = @import("build_options").enable_clickthrough;
     const dpslog = @import("build_options").enable_dpslog;
+    const transform44 = @import("build_options").enable_transform44;
 };
 
 // Conditional module imports
@@ -34,6 +35,7 @@ const healtextfix = if (build_opts.healtextfix) @import("healtextfix/healtextfix
 const bigcursor = if (build_opts.bigcursor) @import("bigcursor/bigcursor.zig") else struct {};
 const clickthrough = if (build_opts.clickthrough) @import("clickthrough/clickthrough.zig") else struct {};
 const dpslog = if (build_opts.dpslog) @import("dpslog/dpslog.zig") else struct {};
+const transform44 = if (build_opts.transform44) @import("transform44/transform44.zig") else struct {};
 
 const WINAPI = std.builtin.CallingConvention.winapi;
 
@@ -610,6 +612,7 @@ const modules = [_]ModuleHooks{
     if (build_opts.bigcursor) .{ .name = bigcursor.module_name, .install = bigcursor.installHooks, .remove = bigcursor.removeHooks, .is_active = bigcursor.isActive } else .{},
     if (build_opts.clickthrough) .{ .name = clickthrough.module_name, .install = clickthrough.installHooks, .remove = clickthrough.removeHooks, .is_active = clickthrough.isActive } else .{},
     if (build_opts.dpslog) .{ .name = dpslog.module_name, .install = dpslog.installHooks, .remove = dpslog.removeHooks, .is_active = dpslog.isActive } else .{},
+    if (build_opts.transform44) .{ .name = transform44.module_name, .install = transform44.installHooks, .remove = transform44.removeHooks, .is_active = transform44.isActive } else .{},
     if (build_opts.worldmarkers) .{ .name = markers.module_name, .install = markers.installHooks, .remove = markers.removeHooks, .is_active = markers.isActive } else .{},
     if (build_opts.interact) .{ .name = interact.module_name, .install = interact.installHooks, .remove = interact.removeHooks, .is_active = interact.isActive } else .{},
     if (build_opts.outline) .{ .name = outline.module_name, .remove = outline.cleanup, .is_active = outline.isActive } else .{},

src/transform44/transform44.zig

@@ -0,0 +1,41 @@
+//! transform44 — hook for transformMatrix4x4 (0x714260)
+//!
+//! transformMatrix4x4 is the main per-frame bone transform engine for M2 models.
+//! 17703 bytes, processes bone entries (0x118 bytes each, array at model+0x90).
+
+const std = @import("std");
+const hook = @import("zhook");
+const logging = @import("../logging.zig");
+const mod_mutex = @import("../mutex.zig");
+
+pub const module_name: [*:0]const u8 = "transform44";
+
+var g_mutex: ?*anyopaque = null;
+var g_is_hook_owner: bool = false;
+var log: logging.Logger = .{};
+
+pub fn isActive() bool {
+    return g_is_hook_owner;
+}
+
+// =============================================================================
+// Install / remove
+// =============================================================================
+
+pub fn installHooks() void {
+    const result = mod_mutex.acquire(module_name);
+    g_mutex = result.handle;
+    g_is_hook_owner = result.is_owner;
+    if (!g_is_hook_owner) return;
+
+    log = logging.Logger.open(module_name, .both);
+    log.print("transform44 module loaded\n");
+}
+
+pub fn removeHooks() void {
+    if (g_is_hook_owner) {
+        log.close();
+        mod_mutex.release(&g_mutex);
+    }
+    g_is_hook_owner = false;
+}