fix: preserve interaction replies across chat recovery

.opencode/tools/ask_user.ts

@@ -0,0 +1,18 @@
+import { tool } from "../tool.js";
+import { interactionQuestionsSchema } from "../../src/chat/interaction-request-contract.js";
+import { hostQuestionBridge } from "../host-question-policy.js";
+
+export default tool({
+  description: "向用户提出最多三个澄清问题。先完成其他工具，再单独调用；问题由宿主持久保存，调用成功后本轮结束，等待用户回答。不要猜测答案，不要继续调用工具，不代替业务审批。选项使用稳定 id；支持单选、多选和自定义文字。",
+  args: { questions: tool.schema.array(tool.schema.object({
+    question_id: tool.schema.string().min(1).max(128), title: tool.schema.string().min(1).max(200), body: tool.schema.string().min(1).max(2000),
+    options: tool.schema.array(tool.schema.object({ id: tool.schema.string().min(1).max(128), label: tool.schema.string().min(1).max(200) }).strict()).max(12),
+    mode: tool.schema.enum(["single", "multiple"]), allow_custom: tool.schema.boolean(), required: tool.schema.boolean(),
+  }).strict()).min(1).max(3) },
+  async execute(args, context) {
+    if (!context.callID) throw new Error("Question requires a trusted tool call ID");
+    return JSON.stringify(await hostQuestionBridge("create", {
+      session_id: context.sessionID, call_id: context.callID, tool: "ask_user", questions: interactionQuestionsSchema.parse(args.questions),
+    }, context.signal));
+  },
+});