Show HN: Interview assistant that's invisible during screen sharing (vedgupta.in)

Realtime Interview Copilot: Desktop Edition is a native Electron app that provides a live AI “copilot” during interviews—listening to system audio, transcribing questions in real time with Deepgram, and generating context-aware replies via Google Generative AI. Its headline feature is a window that becomes invisible during screen sharing (Zoom/Meet/Teams) while remaining functional locally, so you can see prompts and summon a floating “Ask AI” box (K) without exposing it to interviewers. Two interaction modes—Copilot (detailed responses) and Summarizer (quick notes)—are toggled with C/S, and you can save response history to build a personal library. Technically it’s React/Next.js + TypeScript frontend wrapped in Electron, backed by Cloudflare Workers; it captures audio through loopback drivers (BlackHole on macOS, VB‑Audio on Windows, PulseAudio/PipeWire on Linux). The project is open source (73 stars) and cross-platform but currently best-tested on macOS. Significance: it lowers interview friction by producing low-latency, role-tailored answers and in-session help, which can boost performance and learning. Important implications include deployment/latency trade-offs, the requirement for system-level audio routing, and ethical/ToS considerations—use for coaching and practice, not deception.