feat: add OPENAI_BASE_URL to configuration and update model provider to use base URL

backend/.env.example

@@ -62,6 +62,7 @@ TASKIQ_RESULT_BACKEND=redis://localhost:6379/1
 
 # === AI Agent (pydantic_ai, openai) ===
 OPENAI_API_KEY=
+OPENAI_BASE_URL="http://localhost:8011/v1"
 AI_MODEL=gpt-5.5
 AI_TEMPERATURE=0.7
 AI_THINKING_ENABLED=false

backend/app/agents/assistant.py

@@ -34,9 +34,12 @@ logger = logging.getLogger(__name__)
 
 def _build_model(model_name: str):
     """OpenAI-only deployment."""
+    provider_kwargs: dict[str, Any] = {"api_key": settings.OPENAI_API_KEY}
+    if settings.OPENAI_BASE_URL:
+        provider_kwargs["base_url"] = settings.OPENAI_BASE_URL
     return OpenAIResponsesModel(
         model_name or settings.AI_MODEL,
-        provider=OpenAIProvider(api_key=settings.OPENAI_API_KEY),
+        provider=OpenAIProvider(**provider_kwargs),
     )
 
 

backend/app/core/config.py

@@ -143,6 +143,7 @@ class Settings(BaseSettings):
 
     # === AI Agent (pydantic_ai, openai) ===
     OPENAI_API_KEY: str = ""
+    OPENAI_BASE_URL: str = ""
     AI_MODEL: str = "gpt-5.5"
     AI_TEMPERATURE: float = 0.7
     AI_THINKING_ENABLED: bool = False