Add Brainwasher GO tracking and Repair Bot reagent override

Add gameobject entry-ID tracking (go_entry) for Goblin Brainwashing
Device (1000333) with INV_Gizmo_01 icon. Extend TypeMapping to 3-way
enum (npc_flag, go_type, go_entry). Override Field Repair Bot 75B
(50041) to match reagent vendor filters despite having no subname.

src/main.zig

@@ -906,6 +906,7 @@ fn logoutDetour() callconv(sc) void {
 
     // Reset per-session state - only on real logout/disconnect, not /reload.
     if (build_opts.worldmarkers) markers.onShutdown();
+    if (build_opts.minimapicons) minimapicons.onShutdown();
     if (build_opts.logsessions) logsessions.onShutdown();
 
     // Clean up world objects BEFORE game teardown - modules with