fix: ensure emotive ack rotation and prebaked ack caching apply outside v2 queue eligibility

services/ai_voice_runtime_service/app.py

@@ -822,11 +822,14 @@ def _media_registration_from_row(row: VoiceAISessionRow, *, queue_code: str | No
         voice_v2_partial_asr=bool(voice_v2_for_session and _voice_v2_partial_asr_enabled()),
         voice_v2_duplex=bool(voice_v2_for_session and _voice_v2_duplex_enabled()),
         voice_v2_streaming_asr_backend=streaming_backend,
-        voice_v2_prebaked_ack=bool(voice_v2_for_session and _voice_v2_prebaked_ack_enabled()),
-        # Deliberately NOT gated on voice_v2_for_session: phrase-variant rotation only
-        # needs a text pool + live TTS, not the v2 duplex/partial-ASR pipeline, so calls
-        # outside the v2 queue allowlist still get varied fillers instead of always the
-        # single fixed "Секунду." fallback string.
+        # voice_v2_prebaked_ack and voice_v2_emotive_ack are deliberately NOT gated on
+        # voice_v2_for_session: filler-ack synthesis/caching and phrase-variant rotation
+        # only need a text pool + the ack bank, not the v2 duplex/partial-ASR pipeline.
+        # Without this, calls outside the v2 queue allowlist would synthesize every
+        # filler live via ElevenLabs before it could play — adding real TTS round-trip
+        # time to the one phrase whose whole job is to hide that latency — and would
+        # always get the single fixed "Секунду." fallback string instead of rotating.
+        voice_v2_prebaked_ack=bool(_voice_v2_prebaked_ack_enabled()),
         voice_v2_emotive_ack=bool(_voice_v2_emotive_ack_enabled()),
         voice_v2_emotive_ack_ru_only=bool(_voice_v2_emotive_ack_ru_only()),
     )