strip anthropic references from example config

README.md

@@ -160,33 +160,19 @@ a text input at the bottom and a status bar.
 
 ```json5
 {
-    // Backend credentials
-    anthropic: {
-        api_key: "sk-...",
-    },
-    deepinfra: {
+    your_host: {
         api_key: "...",
         base_url: "http://localhost:8000/v1",  // vLLM endpoint
     },
-    openrouter: {
-        api_key: "sk-or-...",
-        base_url: "https://openrouter.ai/api/v1",
-    },
 
     // Named models — switch with /model
     models: {
         "27b": {
-            backend: "deepinfra",
+            backend: "your_host",
             model_id: "Qwen/Qwen3.5-27B",
             prompt_file: "POC.md",       // system prompt file
             context_window: 262144,
         },
-        opus: {
-            backend: "anthropic",
-            model_id: "claude-opus-4-6",
-            prompt_file: "CLAUDE.md",
-            context_window: 200000,
-        },
     },
     default_model: "27b",
 
@@ -221,14 +207,6 @@ a text input at the bottom and a status bar.
 }
 ```
 
-### Backends
-
-- **deepinfra** — any OpenAI-compatible completions API (vLLM, llama.cpp, etc.)
-- **anthropic** — Anthropic's API
-- **openrouter** — OpenRouter
-
-The `deepinfra` name is historical; it works with any base URL.
-
 ### Context groups
 
 Context groups define what gets loaded into the context window at session start.