refactor: extract Discord.js code from shared services into bot layer

Move terminal.service.ts and prune.service.ts entirely to bot/modules/
since they are Discord-specific. Split lootdrop.service.ts: pure logic
(activity tracking, DB ops, claim) stays in shared/, Discord operations
(message sending, channel interactions) move to bot/modules/economy/
lootdrop.handler.ts. Move effect registry/handlers/types from bot/ to
shared/modules/inventory/ since they contain no Discord.js imports and
are needed by inventory.service.ts in shared.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

bot/modules/system/scheduler.ts

@@ -1,5 +1,5 @@
 import { temporaryRoleService } from "@shared/modules/system/temp-role.service";
-import { terminalService } from "@shared/modules/terminal/terminal.service";
+import { terminalService } from "./terminal.service";
 
 export const schedulerService = {
     start: () => {