Update configuration and documentation for LLM support and local watchdog

- Added `ollama-models.yaml` to .gitignore and implemented logic to copy it in gpu-rent.ps1 and gpu-rent.sh.
- Enhanced env.example to include new variables for LLM runtime options and local watchdog configuration.
- Updated CLI commands to support LLM options during setup and execution, including new flags for Ollama and llama.cpp.
- Improved documentation in cli.md and README.md to reflect changes in LLM integration and local watchdog functionality.
- Adjusted architecture and decisions documentation to clarify the role of LLMs and local watchdog in the system.

src/gpu_rent/ux.py

@@ -39,7 +39,9 @@ def cost_and_risk_lines(cfg: Config, *, spot: bool, flavor_name: str) -> list[st
         f"{cfg.idle_minutes} мин пустой очереди → delete compute. Отложить: gpu-rent hold",
         "preemptible: хостер может усыпить (~24 ч окно) → EXPIRED; tunnel сам unshelve, "
         "или gpu-rent up",
-        "Ctrl+C на tunnel GPU не гасит — только gpu-rent stop или idle-killer",
+        "Ctrl+C на tunnel GPU не гасит — только gpu-rent stop или idle-killer. "
+        "Опционально: gpu-rent watchdog install — аварийное закрытие окна/ребут "
+        "после grace тоже stop (Ctrl+C по-прежнему detach)",
     ]