docs: add concurrent lines details and voice latency guide#982

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tasker/DEVREL-578-concurrent-lines-latency-docs

Commits on Mar 19, 2026

docs: add concurrent lines details and voice latency optimization guide

Vapi Tasker
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claude
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fix: upgrade fern python SDK generator to fix mypy errors in preview-python CI

Vapi Tasker
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claude
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fix: use fern python SDK generator v4.55.5 compatible with CLI v3.62.0

Vapi Tasker
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claude
committed