fix(athena): remove dead temperature/permission fields from council launch pipeline

LaunchInput.temperature and LaunchInput.permission were accepted and
passed through the council orchestrator but never forwarded to the
actual promptAsync API call (SDK doesn't support per-request temperature
or permission). Remove the dead fields, the unused AthenaConfig
interface, and update tests/docs/schema accordingly.

src/tools/athena-council/council-launcher.ts

@@ -12,8 +12,6 @@ export function createCouncilLauncher(manager: BackgroundManager): CouncilLaunch
         parentMessageID: input.parentMessageID,
         parentAgent: input.parentAgent,
         model: input.model,
-        temperature: input.temperature,
-        permission: input.permission,
       })
     },
   }