fix: replace invalid \U escapes in ZALGO regex with RegExp constructor

\U escapes are not valid in JavaScript/TypeScript regex literals.
Use new RegExp() constructor to avoid TS parser issues.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

services/discord-gateway/src/modules/ai-moderation/fastClassifier.ts

@@ -40,7 +40,9 @@ interface Pattern {
 // ── Zalgo / zero-width detection ─────────────────────────────────────────
 
 const ZALGO_RE =
-  /[̀-ͯ҃-҉ؐ-ًؚ-ٰٟۖ-ۜ۟-ۤۧ-۪ۨ-ܑۭܰ-݊ަ-ްँ-ः़ा-्॑-॔ॢ-ॣঁ-ঃ়া-ৄে-ৈো-্ৗৢ-ৣ৾ਁ-ਃ਼ਾ-ੂੇ-ੈੋ-੍ੑੰ-ੱੵઁ-ઃ઼ા-ૅે-ૉો-્ૢ-ૣૺ-૿ଁ-ଃ଼ା-ୄେ-ୈୋ-୍ୖ-ୗୢ-ୣஂா-ூெ-ைொ-்ௗఀ-ఃా-ౄె-ైొ-్ౕ-ౖౢ-ౣಁ-ಃ಼ಾ-ೄೆ-ೈೊ-್ೕ-ೖೢ-ೣഀ-ഃ഻-഼ാ-ൄെ-ൈൊ-്ൗൢ-ൣඁ-ඃ්ා-ුූෘ-ෟෲ-ෳัิ-ฺ็-๎ັິ-ູົ-ຼ່-Line truncated
+  new RegExp(
+  '[̀-ͯ҃-҉ؐ-ًؚ-ٰٟۖ-ۜ۟-ۤۧ-۪ۨ-ܑۭܰ-݊ަ-ްँ-ः़ा-्॑-॔ॢ-ॣঁ-ঃ়া-ৄে-ৈো-্ৗৢ-ৣ৾ਁ-ਃ਼ਾ-ੂੇ-ੈੋ-੍ੑੰ-ੱੵઁ-ઃ઼ા-ૅે-ૉો-્ૢ-ૣૺ-૿ଁ-ଃ଼ା-ୄେ-ୈୋ-୍ୖ-ୗୢ-ୣஂா-ூெ-ைொ-்ௗఀ-ఃా-ౄె-ైొ-్ౕ-ౖౢ-ౣಁ-ಃ಼ಾ-ೄೆ-ೈೊ-್ೕ-ೖೢ-ೣഀ-ഃ഻-഼ാ-ൄെ-ൈൊ-്ൗൢ-ൣඁ-ඃ්ා-ුූෘ-ෟෲ-ෳัิ-ฺ็-๎ັິ-ູົ-ຼ່-Line truncated
+);
 
 const ZERO_WIDTH_RE = /[​-‍⁠­؜]/;