Refactor Discord channel resource management and update imports

- Consolidated channel type definitions by moving them to discord-channel-types.ts for better organization.
- Removed redundant DASHBOARD_CHANNEL_TYPES and updated exports to streamline channel handling in the application.
- Enhanced type safety by utilizing the ChannelKind type in the discord-channel-select component.

apps/webui/src/lib/discord-guild-resources.ts

@@ -1,28 +1,11 @@
 import type { DiscordChannelOption, DiscordRoleOption } from '@nexumi/shared';
+import { DASHBOARD_CHANNEL_TYPES } from './discord-channel-types';
 import { env } from './env';
 import { redis } from './redis';
 
 const DISCORD_API_BASE = 'https://discord.com/api/v10';
 const CACHE_TTL_SECONDS = 60;
 
-/** Channel types useful in the dashboard (text, voice, category, forum, …). */
-const DASHBOARD_CHANNEL_TYPES = new Set([
-  0, // GUILD_TEXT
-  2, // GUILD_VOICE
-  4, // GUILD_CATEGORY
-  5, // GUILD_ANNOUNCEMENT
-  13, // GUILD_STAGE_VOICE
-  15, // GUILD_FORUM
-  16 // GUILD_MEDIA
-]);
-
-export const CHANNEL_TYPES = {
-  text: [0, 5, 15, 16],
-  voice: [2, 13],
-  category: [4],
-  messageable: [0, 5, 15, 16]
-} as const;
-
 async function discordBotFetch<T>(path: string): Promise<T> {
   const response = await fetch(`${DISCORD_API_BASE}${path}`, {
     headers: { Authorization: `Bot ${env.BOT_TOKEN}` },
@@ -94,12 +77,4 @@ export async function listGuildRolesForDashboard(guildId: string): Promise<Disco
   return options;
 }
 
-export function channelPrefix(type: number): string {
-  if (type === 2 || type === 13) {
-    return '🔊 ';
-  }
-  if (type === 4) {
-    return '📁 ';
-  }
-  return '#';
-}
+export { CHANNEL_TYPES, channelPrefix, type ChannelKind } from './discord-channel-types';