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

Made-with: Cursor

world/town/objects/iron_sword.toml

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+name = "Standard Iron Sword"
+description = "A well-balanced, albeit unadorned, iron longsword. Standard issue for the town guard."
+room = "town:armory"
+slot = "main_hand"
+kind = "weapon"
+
+[stats]
+attack = 10