Update world data with dialogue, currency, and shop inventories

PLANNED.md

@@ -1,6 +1,8 @@
-# Planned Features
+## Completed
 
-Tracking document for features and content planned for the MUD server. No implementation order implied unless noted. Grouped by difficulty (effort / scope).
+- **Shops / economy** — NPCs that buy and sell; currency and pricing.
+- **Enhanced NPC Interactions** — Keyword-based dialogue system.
+- **Aggressive NPC AI** — NPCs with Aggressive attitude now correctly initiate combat.
 
 ## Easy
 
@@ -18,7 +20,6 @@ New state, commands, or mechanics with bounded scope.
 
 - **Weather** — Weather system (e.g., rain, snow, fog) affecting areas or atmosphere; scope TBD.
 - **Day/night or time of day** — Time cycle affecting room descriptions, spawns, or NPC behavior; lighter than full weather.
-- **Shops / economy** — NPCs that buy and sell; currency and pricing (new fields/tables, trade commands).
 - **Quests or objectives** — Simple “kill X” / “bring Y” goals; quest state in DB and hooks in combat/loot/NPCs.
 - **Player parties** — Group formation, shared objectives, party-only chat or visibility; new state and commands.
 - **PvP** — Player-vs-player combat; consent/flagging, safe zones, and balance TBD.