ClassroomCopilot/app: React 18 + TypeScript + TLDraw 3.6 frontend for Classroom Copilot — whiteboard, transcription panel, timetable, and graph views - app

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kcar 0345258247 fix: transcription getUserMedia called before enumerateDevices

The old startTranscription() called enumerateDevices() first to find a
device ID, then getUserMedia. Without microphone permission, enumerateDevices()
returns devices with deviceId="" (empty string, falsy). This caused the
!this.selectedDeviceId check to bail out early, never calling getUserMedia,
never prompting the user for mic permission, and never creating the WebSocket.

Result: user clicks Start Recording → isRecording=true → button changes to
Stop Recording → but no mic prompt, no WebSocket, no transcription.

Fix: call getUserMedia directly (with optional echoCancellation/noiseSuppression
if no device pre-selected). getUserMedia triggers the browser permission prompt
automatically. Device selection is still honoured via exact deviceId constraint
when one has been explicitly chosen.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-05-21 19:32:43 +00:00

docs

feat(timetable): add frontend routes and comprehensive documentation

2026-02-26 03:27:28 +00:00

public

Initial commit

2025-07-11 13:21:49 +00:00

src

fix: transcription getUserMedia called before enumerateDevices

2026-05-21 19:32:43 +00:00

.env.development

feat(timetable): add page components, services, stores and types