feat: better private channel detection, bot version debugging (#7680)

Signed-off-by: The-Best-Codes <106822363+The-Best-Codes@users.noreply.github.com>

services/ask-ai-bot/utils/discord/server-context.ts

@@ -1,5 +1,10 @@
 import type { Guild, TextChannel } from "discord.js";
-import { ChannelType } from "discord.js";
+import { ChannelType, PermissionFlagsBits } from "discord.js";
+
+function isPublicChannel(ch: TextChannel, guild: Guild): boolean {
+  const everyoneOverwrite = ch.permissionOverwrites.cache.get(guild.id);
+  return !everyoneOverwrite?.deny.has(PermissionFlagsBits.ViewChannel);
+}
 
 export async function buildServerContext(guild: Guild): Promise<string> {
   try {
@@ -8,7 +13,9 @@ export async function buildServerContext(guild: Guild): Promise<string> {
     const textChannels = Array.from(channels.values())
       .filter(
         (ch): ch is TextChannel =>
-          ch?.type === ChannelType.GuildText && ch !== null && ch.viewable,
+          ch?.type === ChannelType.GuildText &&
+          ch !== null &&
+          isPublicChannel(ch, guild),
       )
       .sort((a, b) => (a.position ?? 0) - (b.position ?? 0));