Phonetic run threshold 5 → 12: a plate spellout ("Foxtrot Alpha Uniform Lima
Kilo...") produces 6–8 consecutive phonetic words, triggering false positives
and blocking intelligence extraction on legitimate calls. 12 is safely above
any real spellout (~8 max) while still catching the full-alphabet hallucination
(26 words). Also writes skip_reason="garbage_transcript" to the call doc and
surfaces it in the admin correlation debug endpoint.
Logan
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