refactor: migrate all code to use getGuildConfig() for guild settings

- Update all commands and events to fetch guild config once per execution
- Pass config to service methods that need it (ModerationService.issueWarning)
- Update terminal service to use guildSettingsService for persistence
- Remove direct imports of config for guild-specific settings

This consolidates configuration to database-backed guild settings,
eliminating the dual config system.

bot/commands/inventory/use.ts

@@ -6,7 +6,7 @@ import { createErrorEmbed } from "@lib/embeds";
 import { getItemUseResultEmbed } from "@/modules/inventory/inventory.view";
 import type { ItemUsageData } from "@shared/lib/types";
 import { UserError } from "@shared/lib/errors";
-import { config } from "@shared/lib/config";
+import { getGuildConfig } from "@shared/lib/config";
 
 export const use = createCommand({
     data: new SlashCommandBuilder()
@@ -21,6 +21,9 @@ export const use = createCommand({
     execute: async (interaction) => {
         await interaction.deferReply();
 
+        const guildConfig = await getGuildConfig(interaction.guildId!);
+        const colorRoles = guildConfig.colorRoles ?? [];
+
         const itemId = interaction.options.getNumber("item", true);
         const user = await userService.getOrCreateUser(interaction.user.id, interaction.user.username);
         if (!user) {
@@ -42,7 +45,7 @@ export const use = createCommand({
                                     await member.roles.add(effect.roleId);
                                 } else if (effect.type === 'COLOR_ROLE') {
                                     // Remove existing color roles
-                                    const rolesToRemove = config.colorRoles.filter(r => member.roles.cache.has(r));
+                                    const rolesToRemove = colorRoles.filter(r => member.roles.cache.has(r));
                                     if (rolesToRemove.length > 0) await member.roles.remove(rolesToRemove);
                                     await member.roles.add(effect.roleId);
                                 }