feat(editor): add --gen-village-pack composite

Third composite pack (after --gen-camp-pack and
--gen-blacksmith-pack), emitting a 7-primitive village-square
scene into <outDir>:

  • house — main dwelling
  • outhouse — privy beside it
  • chimney — for the house roof piece
  • hitching-post — at the hitching rail
  • well — village square centerpiece
  • signpost — pointing the way out of town
  • haystack — from the nearby farm

Together these form a recognizable rural-village hub when
arranged in a zone. Uses the existing emitMeshPack helper —
the new pack is just an 8-line declarative table.

All 7 outputs validate clean (--validate-wom PASSED across
the board). Composite-pack catalogue now: camp + blacksmith
+ village.

tools/editor/cli_arg_required.cpp

@@ -57,7 +57,7 @@ const char* const kArgRequired[] = {
     "--gen-mesh-training-dummy", "--gen-mesh-hitching-post",
     "--gen-mesh-outhouse", "--gen-mesh-forge",
     "--gen-mesh-archery-target", "--gen-mesh-gravel-pile",
-    "--gen-camp-pack", "--gen-blacksmith-pack",
+    "--gen-camp-pack", "--gen-blacksmith-pack", "--gen-village-pack",
     "--gen-mesh-table", "--gen-mesh-lamppost", "--gen-mesh-bed",
     "--gen-mesh-ladder", "--gen-mesh-well", "--gen-mesh-signpost",
     "--gen-mesh-mailbox", "--gen-mesh-tombstone", "--gen-mesh-crate",