fix: brick by brick and model placement work the way the client expects

Mapped from the 1.10.64 client and live captures (docs/BuildWorkflow.md).

Model placement (PropertyManagementComponent):
- A brick built model placed from the inventory spawned at the world origin
  with no rotation and without PlaceModelResponse/PreCreate, and was saved
  to properties_contents with ugc_id 0; it is now placed where the client
  put it, keeps its UGID and blueprint and is saved with them.
- Picking up, putting away and taking apart a brick built model gave it to
  MODELS_IN_BBB and then deleted it; every way off the property now puts it
  in MODELS (carried when picked up), as live, with its blueprint config.
  Taking a premade model apart no longer deletes it either.
- Placing and removing a model saves the property at once, so a crash or a
  disconnect before PropertyEditorEnd does not lose it.
- DoneArrangingWithItem only answers when something new is picked (not when
  leaving), with the subject as build area; SetBuildModeConfirmed's
  warnVisitors matches live.

Brick by brick (BrickByBrick):
- BBBLoadItemRequest moves the model to MODELS_IN_BBB keeping its id and
  fails cleanly when the player has no such model.
- MoveInventoryBatch moves bricks between BRICKS and BRICKS_IN_BBB (it was
  not handled, so the client and server disagreed until a relog).
- BBBSaveRequest uses up the opened models, places the new ones through the
  property, returns the bricks (or uses them with bbb_consume_bricks=1),
  clears the autosave and sends RequeryPropertyModels. Every save makes new
  ugc rows (is_optimized 0, so the UGC server processes them).
- Quick save: SetBBBAutosave is stored per character (bbb_autosave).
- UnUseBBBModel puts a model back on the property where it was when it came
  from there, otherwise back in MODELS.
- Leaving brick mode without a save, a disconnect or a crash: the autosave
  is rebuilt into models (RebuildBBBAutosaveMsg) or the opened models go
  back to MODELS. MODELS_IN_BBB is saved with the character now and loads
  into MODELS, BRICKS_IN_BBB into BRICKS.

Fixes #1632
Fixes #159
Fixes #1565

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

dDashboardServer/routes/SettingsCatalog.cpp

@@ -144,6 +144,7 @@ namespace {
 		c.Add(Format(Text(SHARED, "dump_folder", "Crash dump folder", "Where crash logs go. Empty turns them off.", "", true), eFormat::PATH));
 		c.Add(Bool(WORLD, "generate_dump", "Crash dumps from world servers", "Write a dump when a world server crashes (needs the crash dump folder).", false, true));
 		c.Add(Bool(WORLD, "save_lxfmls", "Save model files", "Save players' models (LXFML) to disk before they are split, for debugging.", false));
+		c.Add(Bool(WORLD, "bbb_consume_bricks", "Brick building uses bricks", "Saving a brick by brick model uses up the bricks in it, as live did. Off: the bricks go back to the backpack.", false));
 		c.Add(Bool(SHARED, "dont_generate_dcf", "Don't build the chat filter file", "Skip compiling the chat word list to a file.", false, true));
 
 		c.AddSection("Chat web API", "A small HTTP API on the chat server, on localhost only.");