feat(agent): render local interactive answers and fold completed process

src/features/workbench/hooks/agent-session-message-state.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { toAgentChatMessages, toAgentUiMessages } from "./agent-session-message-state";
+import { applySessionStreamEvent, toAgentChatMessages, toAgentUiMessages } from "./agent-session-message-state";
 
 describe("task context in persisted answers", () => {
   it("keeps the report reference of each answer when history is restored", () => {
@@ -44,3 +44,42 @@ describe("task context in persisted answers", () => {
     expect(messages[0]?.content).toBe("报告引用未记录。");
   });
 });
+
+describe("rich answer replay", () => {
+  const block = { version: "answer-ui@1", block_id: "reading", fallback_text: "演练读数", spec: { root: "metric", elements: { metric: { type: "Metric", props: { label: "压力", value: "0.3", unit: "MPa", source: "演练数据" }, children: [] } } } };
+  it("keeps text, component and summary in their original order across history restoration", () => {
+    const messages = toAgentUiMessages([{ id: "answer", role: "assistant", parts: [
+      { type: "text", text: "下面是演练数据。" },
+      { type: "data-answer_ui", id: "reading", data: block },
+      { type: "text", text: "需要现场核验。" },
+      { type: "data-final_answer", data: { content: "结论仍待确认。", ui_block_ids: ["reading"] } },
+    ] }]);
+    const restored = toAgentChatMessages(messages, {}, {})[0];
+    expect(restored.answerParts?.map((part) => part.type)).toEqual(["text", "answer-ui", "text"]);
+    expect(restored.content).toContain("演练读数");
+    expect(restored.answerParts).toContainEqual({ type: "text", text: "需要现场核验。" });
+    expect(restored.content).not.toContain("需要现场核验。");
+  });
+  it("updates a block once and appends later tokens after it without duplicating final text", () => {
+    let messages = toAgentUiMessages([{ id: "answer", role: "assistant", parts: [{ type: "text", text: "演练：" }] }]);
+    messages = applySessionStreamEvent(messages, { type: "answer_ui", data: block });
+    messages = applySessionStreamEvent(messages, { type: "answer_ui", data: { ...block, fallback_text: "新读数" } });
+    messages = applySessionStreamEvent(messages, { type: "token", data: { content: "仍待核验。", ui_block_ids: ["reading"] } });
+    messages = applySessionStreamEvent(messages, { type: "final_answer", data: { content: "仍待核验。", ui_block_ids: ["reading"] } });
+    const answer = toAgentChatMessages(messages, {}, {})[0];
+    expect(answer.answerParts?.map((part) => part.type)).toEqual(["text", "answer-ui", "text"]);
+    expect(answer.content.match(/新读数/g)).toHaveLength(1);
+    expect(answer.content.match(/仍待核验/g)).toHaveLength(1);
+  });
+  it("falls back to text when an old or malformed UI block cannot be rendered", () => {
+    const messages = toAgentUiMessages([{ id: "answer", role: "assistant", parts: [{ type: "data-answer_ui", data: { ...block, version: "unknown" } }] }]);
+    expect(toAgentChatMessages(messages, {}, {})[0].answerParts).toEqual([{ type: "text", text: "演练读数" }]);
+  });
+});
+
+it("keeps a malformed persisted data payload from crashing the conversation", () => {
+  for (const data of [null, undefined, "invalid"]) {
+    const messages = toAgentUiMessages([{ id: "answer", role: "assistant", parts: [{ type: "data-answer_ui", data }] }]);
+    expect(toAgentChatMessages(messages, {}, {})[0].content).toBe("这段结构化内容无法显示。");
+  }
+});