Strix LLM Documentation and Config Changes (#315)

* feat: add to readme new keys

* feat: shoutout strix models, docs

* fix: mypy error

* fix: base api

* docs: update quickstart and models

* fixes: changes to docs

uniform api_key variable naming

* test: git commit hook

* nevermind it was nothing

* docs: Update default model to claude-sonnet-4.6 and improve Strix Router docs

- Replace gpt-5 and opus-4.6 defaults with claude-sonnet-4.6 across all docs and code
- Rewrite Strix Router (models.mdx) page with clearer structure and messaging
- Add Strix Router as recommended option in overview.mdx and quickstart prerequisites
- Update stale Claude 4.5 references to 4.6 in anthropic.mdx, openrouter.mdx, bug_report.md
- Fix install.sh links to point to models.strix.ai and correct docs URLs
- Update error message examples in main.py to use claude-sonnet-4-6

---------

Co-authored-by: 0xallam <ahmed39652003@gmail.com>

strix/config/config.py

@@ -5,6 +5,9 @@ from pathlib import Path
 from typing import Any
 
 
+STRIX_API_BASE = "https://models.strix.ai/api/v1"
+
+
 class Config:
     """Configuration Manager for Strix."""
 
@@ -177,3 +180,30 @@ def apply_saved_config(force: bool = False) -> dict[str, str]:
 
 def save_current_config() -> bool:
     return Config.save_current()
+
+
+def resolve_llm_config() -> tuple[str | None, str | None, str | None]:
+    """Resolve LLM model, api_key, and api_base based on STRIX_LLM prefix.
+
+    Returns:
+        tuple: (model_name, api_key, api_base)
+    """
+    model = Config.get("strix_llm")
+    if not model:
+        return None, None, None
+
+    api_key = Config.get("llm_api_key")
+
+    if model.startswith("strix/"):
+        model_name = "openai/" + model[6:]
+        api_base: str | None = STRIX_API_BASE
+    else:
+        model_name = model
+        api_base = (
+            Config.get("llm_api_base")
+            or Config.get("openai_api_base")
+            or Config.get("litellm_base_url")
+            or Config.get("ollama_api_base")
+        )
+
+    return model_name, api_key, api_base