Add session scoped runs and cancellation

src/agent_runtime.py

@@ -1060,6 +1060,30 @@ class LocalCodingAgent:
                         tool_result = update.result
                 if tool_result is None:
                     raise RuntimeError(f'Tool executor returned no final result for {tool_call.name}')
+                if (
+                    self.tool_context.cancel_event is not None
+                    and self.tool_context.cancel_event.is_set()
+                ):
+                    result = AgentRunResult(
+                        final_output='已取消当前请求。',
+                        turns=turn_index,
+                        tool_calls=tool_calls,
+                        transcript=session.transcript(),
+                        events=tuple(stream_events),
+                        usage=total_usage,
+                        total_cost_usd=total_cost_usd,
+                        stop_reason='cancelled',
+                        file_history=tuple(file_history),
+                        session_id=session_id,
+                        scratchpad_directory=(
+                            str(scratchpad_directory)
+                            if scratchpad_directory is not None
+                            else None
+                        ),
+                    )
+                    result = self._persist_session(session, result)
+                    self.last_run_result = result
+                    return result
                 if self.plugin_runtime is not None:
                     self.plugin_runtime.record_tool_result(
                         tool_call.name,