Refactor LLM configuration to remove llamacpp support

- Removed references to llamacpp from configuration files, scripts, and documentation, streamlining the LLM setup process to focus solely on Ollama.
- Updated environment variables and paths to eliminate llamacpp-related entries, ensuring clarity in the configuration.
- Adjusted CLI commands and help messages to reflect the removal of llamacpp, enhancing user experience and reducing confusion.
- Revised documentation to provide clear guidance on using Ollama exclusively, including updates to setup instructions and runtime options.

docs/architecture.md

@@ -19,7 +19,7 @@
 │    SwarmUI : 127.0.0.1:7801                                   │
 │    idle-killer: очередь / hold / LLM busy → delete this server │
 │    app cred: DELETE/GET только этот server_id (fail closed)   │
-│    optional: Ollama :11434 / llama.cpp :8080 (туннель 17811/12)│
+│    optional: Ollama :11434 (туннель 17811)                    │
 │                                                               │
 │  boot volume (network)     ОС + NVIDIA + SwarmUI нативно + snapshot │
 │  data volume (network)     Models, Output, Data, workflows     │
@@ -49,7 +49,7 @@
 | `notify` | Toast/звук при backend Idle |
 | `tunnel` | sshtunnel + Nova EXPIRED watchdog |
 | `local_watchdog` | Опциональный локальный тик → stop при unclean exit |
-| `llm_runtime` / `setup_wizard` | Opt-in Ollama/llama.cpp + `ollama-models.yaml` / `llamacpp-models.yaml` |
+| `llm_runtime` / `setup_wizard` | Opt-in Ollama + `ollama-models.yaml` |
 | `idle_killer` / `hold` | systemd на VM + hold-файл |
 | `ready` / `snapshot` | Idle backend + boot snapshot |
 | `access_card` | URL / MCP panel после ready |