Improve active run timing and turn limits

src/session_store.py

@@ -9,6 +9,7 @@ from .agent_types import (
     AgentPermissions,
     AgentRuntimeConfig,
     BudgetConfig,
+    DEFAULT_MAX_TURNS,
     ModelConfig,
     ModelPricing,
     OutputSchemaConfig,
@@ -204,7 +205,7 @@ def deserialize_runtime_config(payload: JSONDict) -> AgentRuntimeConfig:
     output_schema_payload = payload.get('output_schema')
     return AgentRuntimeConfig(
         cwd=Path(str(payload['cwd'])).resolve(),
-        max_turns=int(payload.get('max_turns', 12)),
+        max_turns=int(payload.get('max_turns', DEFAULT_MAX_TURNS)),
         command_timeout_seconds=float(payload.get('command_timeout_seconds', 30.0)),
         max_output_chars=int(payload.get('max_output_chars', 12000)),
         stream_model_responses=bool(payload.get('stream_model_responses', False)),