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

Made-with: Cursor

world/whispering_woods/rooms/forest_entrance.toml

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+name = "Forest Entrance"
+description = """\
+The well-maintained cobblestone of Thornwall yields to a winding dirt \
+path that disappears into the dense, dark eaves of the forest. The air \
+is cooler here, smelling of damp earth and pine needles. The city \
+gates loom to the north."""
+
+[exits]
+north = "town:gate"
+south = "whispering_woods:ancient_oak"