minimal fill-in-middle autocomplete for vscode

i found the existing llama.vscode to be completely impenetrable from a UX perspective. mortar is intended to pair with llama-swap and/or llama-server and has a very simple onboarding flow https://github.com/khimaros/mortar -- autocomplete only, no chat interface, no embeddings, no agentic mode. uses /infill but falls back to openai style completions if they aren't available. works very well with unsloth's qwen3-coder quants (`llama-server --fim-qwen-30b-default`) submitted by /u/xhimaros