I Wasn't Expecting RAG to Be This Useful! (RAG+FIM in Neovim)

Improve Copilot Predictions with Repo Level RAG for Automatic Context in copilot like predictions (FIM) and chat completions (i.e. AskRewrite)

My setup includes a three stage pipeline that triggers on every keystroke:
1. match relevant code (chunks/docs)
2. re-rank (score)
3. FIM/Chat

Using Qwen3-Embedder-0.6B and Qwen3-Reranker-0.6B... tiny, powerful models!