feat(python): voice-agents v1 — interruption-handling

[github-actions]

Adds the interruption-handling recipe for voice-agents v1 (python).

Demonstrates configuring a voice agent with custom endpointing (300ms),
utterance end detection (1200ms), and VAD events to handle user barge-in
(interruptions) gracefully. When the user starts speaking while the agent
is talking, the agent stops its current audio and transitions back to listening.

Key settings shown:

• endpointing=300 — fast silence detection for responsive turn-taking
• utterance_end_ms=1200 — wait 1.2s of silence before finalizing utterance
• vad_events=True — enable voice activity detection events
• UserStartedSpeaking event handling for barge-in behavior

Closes #520

[claude]

@deepgram/devrel — VP escalation: PR #525 has no CI checks triggered after 24 hours. Workflow dispatch returns 403 — cannot re-trigger lead-test.

State: labels=[type:samples, language:python], no statusCheckRollup, created 2026-04-19.

[claude]

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[claude]

@deepgram/devrel — VP escalation: PR #525 has been stuck for ~48 hours. Tests failed on 2026-04-19 and no fix workflow has been triggered. Re-trigger of lead-test.yml failed (HTTP 403). Manual review needed.

State: labels=[type:samples, language:python], checks=FAILURE, mergeable=MERGEABLE

[claude]

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[claude]

VP check (2026-04-24 16:37 UTC): PR still stuck. Previously escalated to @deepgram/devrel. No action taken — awaiting manual review or workflow trigger (GITHUB_TOKEN lacks permission to trigger workflows).

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[claude]

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State: type:samples label, zero checks, last updated 2026-05-05

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