Can AI replace Fireflies.ai?

Build me a searchable call transcript archive to replace Fireflies.ai. Requirements:

- A Node pipeline plus a local web app (Express + better-sqlite3, localhost).
- Ingest: watch ~/Recordings/ with chokidar, or `calls add <file>`. Transcribe
  locally with whisper.cpp, or Deepgram/OpenAI Whisper if a key is in .env.
- Summarize each call with an LLM (key in .env): overview, action items with
  owners, questions asked, next steps. Store summary and full transcript in
  SQLite.
- Search page: FTS5 keyword search across every transcript ever, results show
  matching lines with timestamps and link into the full transcript.
- Topic tracker: topics.json holds keywords (competitor names, pricing, churn);
  a page lists every call where each topic came up, newest first.
- Export any call to Markdown in ~/Calls/notes/YYYY-MM-DD-<name>.md.
- No accounts, no telemetry; audio stays local unless I opt into a hosted API.
- Out of scope: a bot that joins Zoom/Meet/Teams, calendar routing, CRM sync,
  and team sharing. I supply the recordings myself.
- README: dependencies, optional keys, and how to record call audio on my OS.