Add world boss window (AVA2 uitrack world-boss tab, read-only)

mt_boss lists the server's timed boss regens from the MTF1 "bosses"
query: alive/max, countdown, map-local position and period, paged by 8,
with per-boss spawn reminders that only fire on a fresh alive snapshot.
Teleport is left out.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/platform/ScriptLib/PythonBoot.cpp

@@ -1003,6 +1003,7 @@ namespace PythonBoot
 #include "PickupScript.inc"
 #include "DisplayScript.inc"
 #include "ChannelScript.inc"
+#include "BossScript.inc"
 
 static void install_script_module(const char* c_szModule, const char* c_szScript)
 {
@@ -1080,6 +1081,7 @@ bool RunMainScript(const char* lpCmdLine, std::string* error)
 		install_script_module("mt_pickup", c_szPickupScript);
 		install_script_module("mt_display", c_szDisplayScript);
 		install_script_module("mt_channel", c_szChannelScript);
+		install_script_module("mt_boss", c_szBossScript);
 		if (g_touch_input)
 			install_script_module("mt_mobile_hud", c_szMobileHUDScript);
 	}