fix(tts): correct Discord snowflake regex and getSource typo

- Mention/emoji regexes used [(0-9)]{18}; '(' and ')' inside a character
  class are literal so this matched the bracket chars themselves and
  hard-fixed the ID length to 18. Discord snowflakes are 17-20 digits
  (older 2015-2017 accounts are 17, 2024+ trend toward 19-20). Switch
  to \\d{17,20} and capture the ID for member lookup.
- Tighten emoji regex name segment from .* (greedy, eats across emojis)
  to [^:]+ so adjacent emojis no longer collapse into one match.
- Rename getSorce -> getSource.

src/classes/TTSClient.ts

@@ -62,7 +62,7 @@ export class TTSClient {
     }
 
     text = this.textEditor(channel.guild, text);
-    const buf = await this.getSorce(text);
+    const buf = await this.getSource(text);
     if (!buf) return;
 
     const session = this.getSession(channel.guild, voiceChannel);
@@ -91,7 +91,7 @@ export class TTSClient {
   }
 
 
-  private async getSorce(text: string): Promise<Buffer | null> {
+  private async getSource(text: string): Promise<Buffer | null> {
     const parts = text.split(signature.regex);
     const bufferList: Buffer[] = [];
 
@@ -119,11 +119,11 @@ export class TTSClient {
     if (text.length === 0) return "파일";
     return text
       .replace(URL_RE, (u) => labelForUrl(u) ?? u)
-      .replace(/\<\@\!?[(0-9)]{18}\>/g, (t) => {
-        const member = guild.members.cache.get(t.replace(/[^0-9]/g,""));
+      .replace(/<@!?(\d{17,20})>/g, (_t, id: string) => {
+        const member = guild.members.cache.get(id);
         return member?.nickname ?? member?.user.username ?? "유저";
       })
-      .replace(/\<a?\:.*\:[(0-9)]{18}\>/g, () => {
+      .replace(/<a?:[^:]+:\d{17,20}>/g, () => {
         return "이모티콘";
       });
   }