feat(agent): sandbox conversation analysis

src/runtime/toolOutputStaging.ts

@@ -0,0 +1,47 @@
+import { config } from "../config.js";
+import { type RuntimeSessionContext } from "./sessionContext.js";
+import { stageConversationText } from "./conversationWorkspace.js";
+
+export type ToolDataFilePayload = {
+  bytes: number;
+  content_type: string;
+  file_path: string;
+};
+
+export const stageLargeToolOutput = async (
+  context: RuntimeSessionContext,
+  content: string,
+  options: {
+    contentType: string;
+    extension: string;
+    force?: boolean;
+    prefix: string;
+  },
+): Promise<ToolDataFilePayload | null> => {
+  if (!options.force && Buffer.byteLength(content) <= config.MAX_INLINE_RESULT_BYTES) {
+    return null;
+  }
+  if (!context.workspaceDirectory) {
+    throw new Error(
+      "large tool output requires a conversation workspace; create a new conversation",
+    );
+  }
+  const staged = await stageConversationText(
+    context.workspaceDirectory,
+    config.RESULT_REF_IMPORT_DIR,
+    content,
+    options,
+  );
+  return {
+    bytes: staged.bytes,
+    content_type: staged.contentType,
+    file_path: staged.filePath,
+  };
+};
+
+export const buildLargeCliResult = (dataFile: ToolDataFilePayload) => ({
+  ok: true,
+  schema_version: "tjwater-cli/v1",
+  summary: "CLI 结果已保存到当前对话工作区",
+  data_file: dataFile,
+});