chore: update nanobot to 0.1.4.post6

backend/app/core/llm_provider.py

@@ -0,0 +1,60 @@
+from typing import Optional, Dict
+
+from nanobot.providers.azure_openai_provider import AzureOpenAIProvider
+from nanobot.providers.openai_codex_provider import OpenAICodexProvider
+from nanobot.providers.openai_compat_provider import OpenAICompatProvider
+from nanobot.providers.registry import find_by_name
+
+
+def normalize_provider_name(provider: Optional[str]) -> Optional[str]:
+    if not provider:
+        return None
+    normalized = provider.strip().lower()
+    alias_map = {
+        "azure": "azure_openai",
+        "local": "vllm",
+    }
+    return alias_map.get(normalized, normalized)
+
+
+def build_llm_provider(
+    *,
+    model: str,
+    provider: Optional[str] = None,
+    api_key: Optional[str] = None,
+    api_base: Optional[str] = None,
+    extra_headers: Optional[Dict[str, str]] = None,
+):
+    provider_name = normalize_provider_name(provider)
+    spec = find_by_name(provider_name) if provider_name else None
+    backend = spec.backend if spec else "openai_compat"
+
+    if backend == "openai_codex" or model.startswith("openai-codex/"):
+        return OpenAICodexProvider(default_model=model)
+
+    if backend == "azure_openai":
+        if not api_key or not api_base:
+            raise ValueError("Azure OpenAI requires api_key and api_base.")
+        return AzureOpenAIProvider(
+            api_key=api_key,
+            api_base=api_base,
+            default_model=model,
+        )
+
+    if backend == "anthropic":
+        from nanobot.providers.anthropic_provider import AnthropicProvider
+
+        return AnthropicProvider(
+            api_key=api_key,
+            api_base=api_base,
+            default_model=model,
+            extra_headers=extra_headers,
+        )
+
+    return OpenAICompatProvider(
+        api_key=api_key,
+        api_base=api_base,
+        default_model=model,
+        extra_headers=extra_headers,
+        spec=spec,
+    )