fix: sandbox strips standard io, use Mods.lua.io (DMF engine backup); pcall the load-time dump

AutoMark/scripts/mods/AutoMark/utils/utils.lua

@@ -77,8 +77,9 @@ function mod:dump_breeds()
             table.concat(tags, ","))
     end
 
+    -- the mod sandbox strips the standard io library, go through DMF's engine backup
     local path = "./../mods/AutoMark/breed_dump.txt"
-    local file, err = io.open(path, "w")
+    local file, err = Mods.lua.io.open(path, "w")
     if file then
         file:write(table.concat(lines, "\n"))
         file:close()
@@ -88,4 +89,8 @@ function mod:dump_breeds()
     end
 end
 
-mod:dump_breeds()
+-- never let the dev dump break mod load
+local ok, err = pcall(mod.dump_breeds, mod)
+if not ok then
+    mod:echo("breed dump error:", tostring(err))
+end