Update extensions and documentation for LLM integration and CLI enhancements

- Added support for a new extension, `swarm-assistent`, in `extensions.example.yaml` with a requirement for `ollama`.
- Enhanced the README.md to clarify the setup process and provide a quick start guide for using extensions.
- Updated documentation in `llm.md` to reflect the opt-in nature of LLM support and provide clearer instructions for enabling it.
- Improved the `autocomplete.md` to detail the automatic setup of word lists during the initial launch.
- Revised `cli.md` to include new commands and options related to LLM runtime handling and extension management.
- Enhanced the `spike-notes.md` to guide users through the first live run with a focus on LLM integration.

docs/autocomplete.md

@@ -2,7 +2,9 @@
 
 Официальная инструкция: [docs/Features/Autocompletions.md](https://github.com/mcmonkeyprojects/SwarmUI/blob/master/docs/Features/Autocompletions.md).
 
-Нужен word-list (`.csv` / `.txt`) в `Data/Autocompletions` и выбранный источник в настройках пользователя. Без файла в UI нечего выбирать.
+**По умолчанию включено** (`AUTOCOMPLETE_ENABLED=true`): на bootstrap CLI качает `danbooru.csv` и прописывает источник в Settings **до** первого старта SwarmUI. Ничего руками делать не нужно.
+
+Выключить: `AUTOCOMPLETE_ENABLED=false` в `.env`.
 
 ## Поведение gpu-rent