Can I vibecode Wispr Flow?

Build me a system-wide AI dictation tool like Wispr Flow for macOS. Requirements:

- A background app with a global hotkey (hold-to-talk fn key or a chosen shortcut).
  While held: record the mic. On release: transcribe and paste.
- Transcribe with whisper.cpp locally (small or medium model), or the Groq/OpenAI
  Whisper API if a key exists in .env · pick per a config flag.
- Pipe the raw transcript through an LLM (key in .env) with a short prompt that
  removes filler words, fixes punctuation, and matches casing to dictation style.
- Insert the result at the current cursor position in whatever app has focus
  (simulate keystrokes or use the pasteboard + Cmd-V approach, restoring the
  previous clipboard afterwards).
- Show a tiny floating pill while recording so I know it's live.
- Menu bar toggle for on/off, launch at login, and a settings file for the hotkey.
- No accounts, no telemetry, works offline with the local model.
- README with the Accessibility/Input Monitoring permissions I need to grant.