Intent

Ship Slice 3 hardening: reduce false Talk Mode interruptions caused by speaker bleed when output is on built-in device audio.

Changes

• gate shouldInterrupt(...) by current audio output route
• disable speech-interrupt barge-in when output route is built-in speaker or built-in receiver
• keep barge-in enabled for isolated routes (headphones/Bluetooth/USB/CarPlay/AirPlay)
• add changelog attribution

Scope Guardrails

• no background lifecycle changes
• no VoIP entitlement changes
• no chat.push behavior changes

Attribution

• extracted from the background voice hardening intent in feat(ios): background voice mode with improved TTS handling #17319
• Thanks @zeulewan

Validation

• pnpm check

Greptile Summary

Adds audio route detection to gate Talk Mode barge-in behavior, preventing false interruptions when TTS output plays through built-in speaker/receiver (which can cause feedback loops). Barge-in remains enabled for isolated audio outputs like headphones, Bluetooth, and CarPlay.

Confidence Score: 5/5

• Safe to merge - focused hardening change with clear scope and no breaking changes
• Clean implementation of audio route-based gating for speech interrupts. Logic is straightforward, uses standard AVFoundation APIs correctly, includes clear comments, and has proper CHANGELOG attribution. No security concerns, no breaking changes, and aligns with the stated scope guardrails.
• No files require special attention

_{Last reviewed commit: 637de5d}