Compress hallucinated XTTS silence

compose.yaml

@@ -700,6 +700,9 @@ services:
       # Short sentence-sized requests avoid long generated silences and
       # truncated weather/status summaries with Annmarie Nele.
       XTTS_CHUNK_CHARS: "60"
+      # XTTS occasionally inserts multi-second silence inside a phrase.
+      XTTS_INTERNAL_SILENCE_TRIGGER_MS: "650"
+      XTTS_INTERNAL_SILENCE_KEEP_MS: "220"
       PIPER_TIMEOUT: "120"
     networks: [frontend]
     depends_on: