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

Made-with: Cursor

world/town/rooms/city_wall_east.toml

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+name = "Eastern Wall Walk"
+description = """\
+A stone walkway atop the city's eastern wall. From here, you can see the dense treeline of the Whispering Woods to the south and the sprawling farmlands to the east."""
+
+[exits]
+west = "town:gate"