fix: delay meet twilio intro speech

docs/plugins/google-meet.md

@@ -1411,6 +1411,9 @@ participant:
   the PIN.
 - Increase the leading pauses in `--dtmf-sequence` if Meet answers slowly, for
   example `wwww123456#`.
+- If the participant joins but you miss the first spoken line, increase
+  `plugins.entries.google-meet.config.voiceCall.postDtmfSpeechDelayMs` so the
+  intro is spoken after Meet finishes admitting the phone participant.
 
 If webhooks do not arrive, debug the Voice Call plugin first: the provider must
 reach `plugins.entries.voice-call.config.publicUrl` or the configured tunnel.

docs/plugins/voice-call.md

@@ -766,6 +766,11 @@ If Voice Call is green but the Meet participant never joins, check the Meet
 dial-in number, PIN, and `--dtmf-sequence`. The phone call can be healthy while
 the meeting rejects or ignores an incorrect DTMF sequence.
 
+Google Meet starts Voice Call silently, sends DTMF, then asks Voice Call to
+speak the intro after `voiceCall.postDtmfSpeechDelayMs`. Increase that delay in
+the Google Meet plugin config if the first line is spoken before Meet admits the
+phone participant.
+
 ### Realtime call has no speech
 
 Confirm only one audio mode is enabled. `realtime.enabled` and