v0.2.0-beta.5.1.9 - Gemini TTS Long Materialization Window

Gemini completed-audio materialization window

Trigger:

• controlled Batch A run 31597210578
• source v0.2.0-beta.5.1.8 / 87da695
• Atomic Habits Sulafat chunks succeeded
• Atomic Habits Schedar chunk 1 returned an accepted completed Interaction but exposed no audio through six same-ID GET polls

Fix:

• same-ID polling interval remains 5 seconds
• existing Interaction timeout remains 15 minutes
• completed/no-audio bound derives to 180 same-ID GET polls
• success-path deterministic proof returns audio on GET 12
• persistent no-audio remains fail-closed
• no duplicate generation POST after accepted Interaction ID
• generation POST hard cap remains 10
• content_blocked recovery POST hard budget remains 2
• response_format remains type=audio
• transcript and safety settings unchanged

Lifecycle:

• Issue #70
• PR #71
• final PR head: 4863683
• merge/release SHA: e52eea2
• PR CI: 31599995316
• main CI: 31601039576
• Pages deploy: 31601039609

Safety:

• no Batch A dispatch in this release step
• no media-dual-v0.2.0-beta.6 creation
• no episodes.json/player/Piper promotion