fix: restore auth and research variant

src/agentci/config.py

@@ -37,6 +37,7 @@ class Settings(BaseSettings):
     implement_model: str = "openai/gpt-5.6-sol"
     implement_variant: str | None = None
     research_model: str = "openai/gpt-5.6-luna"
+    research_variant: str = "high"
     plan_review_rounds: int = Field(default=4, ge=1, le=20)
     implement_review_rounds: int = Field(default=3, ge=1, le=20)
     turn_timeout_seconds: int = Field(default=3600, ge=60)

src/agentci/container.py

@@ -59,7 +59,7 @@ async def build_container(settings: Settings) -> Container:
         required_models=(
             (settings.plan_model, settings.plan_variant),
             (settings.implement_model, settings.implement_variant),
-            (settings.research_model, None),
+            (settings.research_model, settings.research_variant),
         ),
         timeout_seconds=settings.turn_timeout_seconds,
     )