Add world content: warden class, druids guild, sylvan race, town expansion, whispering_woods region

Made-with: Cursor

world/town/rooms/inn_upstairs.toml

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+name = "Inn Upstairs"
+description = """\
+A narrow hallway lined with heavy wooden doors. The floorboards creak underfoot, and the muffled sounds of the tavern below seep through the floor. Several doors are shut tight, but one stands slightly ajar."""
+
+[exits]
+down = "town:tavern"