feat(rsvpSpeech): Implement RSVP speech response mode validation and adjust silence thresholds

[sajjad-mazaheri]

No description provided.

[Copilot]

🟢 Approval recommended

The changes are well-scoped, covered by new/updated tests (including validation snapshots), and the modified capture/controller behavior is exercised by targeted regressions.

Pull request overview

Adds RSVP-speech specific validation and refines RSVP speech capture behavior to better separate “start input” (microphone running) from “start capture” (emit gated PCM + begin utterance), while aligning provider silence/endpointing thresholds with RSVP needs.

Changes:

• Add a new experiment-table validation error when RSVP reading uses both responseSpokenBool and responseSpokenToExperimenterBool in the same enabled condition.
• Introduce startInput() to microphone capture and use it during RSVP speech preparation so input can run before stimulus onset without buffering/emitting pre-onset frames.
• Set RSVP-specific provider silence/endpointing thresholds (ElevenLabs VAD silence = 1.5s; Deepgram default endpointing = 1500ms), with tests asserting URL parameters.

File summaries

File	Description
preprocess/validateExperimentTable.ts	Adds checkRsvpSpeechResponseModes and registers it in TABLE_CHECKS.
components/speech/audioCapture.ts	Adds startInput() and updates start()/stop() to support pre-onset input without pre-onset emission.
components/rsvpSpeech/rsvpSpeechController.ts	Starts microphone input during prepare() and applies RSVP-specific silence/endpointing defaults in transcriber creation.
tests/validationGreenSnapshot.test.ts	Adds a per-check trigger scenario for RSVP speech response mode incompatibility.
tests/__snapshots__/validationGreenSnapshot.test.ts.snap	Updates snapshot to include the new validation output.
tests/rsvpSpeechCompiler.test.ts	New targeted validation tests for RSVP speech response mode rules across conditions/blocks/defaults.
tests/audioCapture.test.ts	Adds tests for startInput() gating semantics and lifecycle behavior.
tests/speechSession.test.ts	Adds a regression test ensuring presentation end doesn’t prematurely stop input or start final-result timeout behavior.
tests/rsvpSpeechController.test.ts	Expands controller tests for startInput() behavior and provider silence/endpointing configuration.

Review details

• Files reviewed: 9/9 changed files
• Comments generated: 0
• Review effort level: Lite

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