fix(chat): only expose final agent response

.opencode/agents/instruction.md

@@ -2,10 +2,14 @@
 description: TJWater Agent，用于供水网络分析和操作员工作流
 mode: primary
 model: deepseek/deepseek-v4-flash
-temperature: 0.2
 ---
 你是 TJWater 供水管网分析 Agent，运用水力专业知识，回复用户时使用简体中文，内容要求简洁准确。
 
+## 回复要求
+
+- 工具执行期间不输出过程说明，全部完成后只回复最终结果
+- 直接给出结论、关键数据和可执行建议，默认仅展示最重要的 Top 5；数据不足或任务失败时简要说明影响和下一步
+
 ## 工作流生命周期
 
 Skills 树是**动态生长的**——工作流不是预置的，而是从实际任务中沉淀出来的：

src/routes/chatStream.ts

@@ -111,24 +111,40 @@ const toRuntimeModel = (model?: SupportedModel) => {
   };
 };
 
-const emitFallbackMessage = async (
+const emitFinalMessage = async (
   runtime: OpencodeRuntimeAdapter,
   sessionId: string,
   clientSessionId: string,
+  currentAssistantMessageIds: Set<string>,
+  assistantTextParts: Map<string, Map<string, string>>,
   write: (event: string, data: Record<string, unknown>) => void,
 ) => {
+  let text = [...currentAssistantMessageIds]
+    .reverse()
+    .map((messageId) => [...(assistantTextParts.get(messageId)?.values() ?? [])].join(""))
+    .find((content) => content.length > 0) ?? "";
+
+  if (!text) {
     const messages = await runtime.messages(sessionId);
     const assistantMessage = [...messages]
       .reverse()
-    .find((message) => message.info.role === "assistant");
+      .find(
-  const parts = assistantMessage?.parts ?? [];
+        (message) =>
-  const text = collectTextContent(parts);
+          message.info.role === "assistant" &&
+          (currentAssistantMessageIds.size === 0 ||
+            currentAssistantMessageIds.has(message.info.id)),
+      );
+    text = collectTextContent(assistantMessage?.parts ?? []);
+  }
+
   if (text) {
     write("token", {
       session_id: clientSessionId,
       content: text,
     });
+    return true;
   }
+  return false;
 };
 
 export const streamPromptResponse = async ({
@@ -156,15 +172,14 @@ export const streamPromptResponse = async ({
   const emittedToolParts = new Set<string>();
   const emittedQuestionToolParts = new Set<string>();
   const emittedQuestionRequestIds = new Set<string>();
+  const currentAssistantMessageIds = new Set<string>();
+  const assistantTextParts = new Map<string, Map<string, string>>();
   const partTypes = new Map<string, Part["type"]>();
-  const pendingPartTextDeltas = new Map<string, string[]>();
+  const pendingTextDeltas = new Map<string, string[]>();
-  const reasoningDeltas = new Map<string, string[]>();
   const reasoningStatuses = new Map<string, "running" | "completed">();
   const toolStatuses = new Map<string, string>();
   let firstSessionEventLogged = false;
   let firstNonStatusEventLogged = false;
-  let firstTokenLogged = false;
-  let firstReasoningLogged = false;
   let firstToolEventLogged = false;
   let lastSessionStatus: string | null = null;
   let lastSessionStatusMessage: string | null = null;
@@ -626,45 +641,26 @@ export const streamPromptResponse = async ({
       if (event.type === "message.updated") {
         if (event.properties.info.role === "assistant") {
           sawResponseActivity = true;
+          currentAssistantMessageIds.add(event.properties.info.id);
         }
         continue;
       }
 
       if (event.type === "message.part.delta" && event.properties.field === "text") {
         sawResponseActivity = true;
+        currentAssistantMessageIds.add(event.properties.messageID);
         const partType = partTypes.get(event.properties.partID);
         if (partType === "text") {
-          if (!firstTokenLogged) {
+          const messageParts = assistantTextParts.get(event.properties.messageID) ?? new Map();
-            firstTokenLogged = true;
+          messageParts.set(
-            logDevelopmentDebug("first response token emitted", {
+            event.properties.partID,
-              ...debugContext,
+            `${messageParts.get(event.properties.partID) ?? ""}${event.properties.delta}`,
-              partId: event.properties.partID,
+          );
-              elapsedMs: Math.max(0, Date.now() - requestStartedAt),
+          assistantTextParts.set(event.properties.messageID, messageParts);
-              sincePromptDispatchMs: Math.max(0, Date.now() - promptStartedAt),
-            });
-          }
-          emittedText = true;
-          write("token", {
-            session_id: clientSessionId,
-            content: event.properties.delta,
-          });
-        } else if (partType === "reasoning") {
-          if (!firstReasoningLogged) {
-            firstReasoningLogged = true;
-            logDevelopmentDebug("first reasoning delta received", {
-              ...debugContext,
-              partId: event.properties.partID,
-              elapsedMs: Math.max(0, Date.now() - requestStartedAt),
-              sincePromptDispatchMs: Math.max(0, Date.now() - promptStartedAt),
-            });
-          }
-          const pending = reasoningDeltas.get(event.properties.partID) ?? [];
-          pending.push(event.properties.delta);
-          reasoningDeltas.set(event.properties.partID, pending);
         } else if (!partType) {
-          const pending = pendingPartTextDeltas.get(event.properties.partID) ?? [];
+          const pending = pendingTextDeltas.get(event.properties.partID) ?? [];
           pending.push(event.properties.delta);
-          pendingPartTextDeltas.set(event.properties.partID, pending);
+          pendingTextDeltas.set(event.properties.partID, pending);
         }
         continue;
       }
@@ -673,23 +669,19 @@ export const streamPromptResponse = async ({
         sawResponseActivity = true;
         const part = event.properties.part;
         partTypes.set(part.id, part.type);
+        if (part.type === "text" || part.type === "reasoning" || part.type === "tool") {
+          currentAssistantMessageIds.add(part.messageID);
+        }
         if (part.type === "text") {
-          const pending = pendingPartTextDeltas.get(part.id) ?? [];
+          const pendingText = (pendingTextDeltas.get(part.id) ?? []).join("");
-          pendingPartTextDeltas.delete(part.id);
+          pendingTextDeltas.delete(part.id);
-          for (const content of pending) {
+          const messageParts = assistantTextParts.get(part.messageID) ?? new Map();
-            emittedText = true;
+          messageParts.set(part.id, part.text || pendingText);
-            write("token", {
+          assistantTextParts.set(part.messageID, messageParts);
-              session_id: clientSessionId,
+        } else {
-              content,
+          pendingTextDeltas.delete(part.id);
-            });
         }
-        } else if (part.type === "reasoning") {
+        if (part.type === "reasoning") {
-          const pending = pendingPartTextDeltas.get(part.id) ?? [];
-          if (pending.length > 0) {
-            const existing = reasoningDeltas.get(part.id) ?? [];
-            reasoningDeltas.set(part.id, existing.concat(pending));
-          }
-          pendingPartTextDeltas.delete(part.id);
           const reasoningStatus = part.time.end ? "completed" : "running";
           if (reasoningStatuses.get(part.id) !== reasoningStatus) {
             reasoningStatuses.set(part.id, reasoningStatus);
@@ -697,14 +689,10 @@ export const streamPromptResponse = async ({
               ...debugContext,
               partId: part.id,
               status: reasoningStatus,
-              chunkCount: (reasoningDeltas.get(part.id) ?? []).length,
               elapsedMs: Math.max(0, Date.now() - requestStartedAt),
             });
           }
-          const reasoningDetail = buildReasoningProgressDetail(
+          const reasoningDetail = buildReasoningProgressDetail(part.time.end);
-            reasoningDeltas.get(part.id) ?? [],
-            part.time.end,
-          );
           emitProgress({
             id: part.id,
             phase: "planning",
@@ -784,9 +772,6 @@ export const streamPromptResponse = async ({
             detail: buildToolProgressDetail(
               part.tool,
               part.state.status,
-              toolParams,
-              reason,
-              part.state.status === "error" ? part.state.error : undefined,
             ),
           });
           if (
@@ -932,13 +917,14 @@ export const streamPromptResponse = async ({
     }
 
     await promptPromise;
-    if (!emittedText) {
+    emittedText = await emitFinalMessage(
-      logDevelopmentDebug("no streamed text emitted, falling back to messages()", {
+      runtime,
-        ...debugContext,
+      sessionId,
-        elapsedMs: Math.max(0, Date.now() - requestStartedAt),
+      clientSessionId,
-      });
+      currentAssistantMessageIds,
-      await emitFallbackMessage(runtime, sessionId, clientSessionId, write);
+      assistantTextParts,
-    }
+      write,
+    );
     emitProgress({
       id: "request-received",
       phase: "start",

src/routes/chatStreamEvents.ts

@@ -356,43 +356,6 @@ export const normalizeToolStatus = (status: string) => {
   return "running";
 };
 
-const formatProgressValue = (value: unknown): string => {
-  if (typeof value === "string") {
-    return value.length > 120 ? `${value.slice(0, 117)}...` : value;
-  }
-  if (
-    typeof value === "number" ||
-    typeof value === "boolean" ||
-    value === null ||
-    value === undefined
-  ) {
-    return String(value);
-  }
-  try {
-    const serialized = JSON.stringify(value);
-    return serialized.length > 120 ? `${serialized.slice(0, 117)}...` : serialized;
-  } catch {
-    return "[unserializable]";
-  }
-};
-
-const normalizeProgressText = (chunks: string[]) =>
-  chunks.join("").replace(/\s+/g, " ").trim();
-
-const truncateProgressText = (text: string, maxLength: number) =>
-  text.length > maxLength ? `${text.slice(0, maxLength - 3)}...` : text;
-
-const summarizeToolParams = (params: Record<string, unknown>) => {
-  const ignoredKeys = new Set(["reason", "request_reason", "why", "purpose", "rationale"]);
-  const summary = Object.entries(params)
-    .filter(([key]) => !ignoredKeys.has(key))
-    .slice(0, 4)
-    .map(([key, value]) => `${key}=${formatProgressValue(value)}`)
-    .join(", ");
-
-  return summary || "无附加参数";
-};
-
 export const buildSessionStatusDetail = (status: { type: string; message?: string }) => {
   if (status.type === "retry") {
     return status.message
@@ -413,42 +376,25 @@ export const buildSessionStatusDetail = (status: { type: string; message?: strin
 };
 
 export const buildReasoningProgressDetail = (
-  chunks: string[],
   ended?: string | number | Date | null,
-) => {
+) => ended ? "分析步骤已整理完成。" : "Agent 正在分析问题。";
-  const reasoningText = truncateProgressText(normalizeProgressText(chunks), 800);
-  if (ended) {
-    return reasoningText
-      ? `推理过程：${reasoningText}`
-      : "当前推理阶段已完成，Agent 将继续输出答案或进入工具执行。";
-  }
-  return reasoningText
-    ? `正在推理：${reasoningText}`
-    : "Agent 正在拆解问题、梳理执行步骤并判断是否需要调用工具。";
-};
 
 export const buildToolProgressDetail = (
   tool: string,
   status: string,
-  params: Record<string, unknown>,
-  reason: string,
-  error?: string,
 ) => {
   const toolName = toolLabels[tool] ?? tool;
-  const reasonText = reason ? `；调用原因：${reason}` : "";
-  const paramsText = `；关键参数：${summarizeToolParams(params)}`;
 
   if (status === "error") {
-    const errorText = error ? `；错误：${error}` : "";
+    return `${toolName} 调用失败。`;
-    return `${toolName} 调用失败${reasonText}${paramsText}${errorText}`;
   }
   if (status === "completed") {
-    return `${toolName} 已执行完成${reasonText}${paramsText}`;
+    return `${toolName} 已执行完成。`;
   }
   if (status === "pending") {
-    return `${toolName} 已进入待执行状态${reasonText}${paramsText}`;
+    return `${toolName} 等待执行。`;
   }
-  return `${toolName} 正在执行${reasonText}${paramsText}`;
+  return `${toolName} 正在执行。`;
 };
 
 export const getToolProgressTitle = (tool: string, status: string) => {

tests/routes/chatStream.test.ts

@@ -15,6 +15,240 @@ const createEventStream = (events: unknown[]) => ({
 });
 
 describe("streamPromptResponse", () => {
+  it("emits only the final assistant text after tool-driven intermediate messages", async () => {
+    const runtime = {
+      subscribeEvents: async () =>
+        createEventStream([
+          {
+            type: "message.part.delta",
+            properties: {
+              sessionID: "runtime-session-1",
+              messageID: "assistant-intermediate",
+              partID: "text-part-intermediate",
+              field: "text",
+              delta: "正在加载工作流并尝试分页参数。",
+            },
+          },
+          {
+            type: "message.part.updated",
+            properties: {
+              sessionID: "runtime-session-1",
+              part: {
+                id: "text-part-intermediate",
+                sessionID: "runtime-session-1",
+                messageID: "assistant-intermediate",
+                type: "text",
+                text: "正在加载工作流并尝试分页参数。",
+                time: { start: 1, end: 2 },
+              },
+              time: 2,
+            },
+          },
+          {
+            type: "message.part.delta",
+            properties: {
+              sessionID: "runtime-session-1",
+              messageID: "assistant-final",
+              partID: "text-part-final",
+              field: "text",
+              delta: "共识别 56 条瓶颈管段，建议优先改造 Top 5。",
+            },
+          },
+          {
+            type: "message.part.updated",
+            properties: {
+              sessionID: "runtime-session-1",
+              part: {
+                id: "text-part-final",
+                sessionID: "runtime-session-1",
+                messageID: "assistant-final",
+                type: "text",
+                text: "共识别 56 条瓶颈管段，建议优先改造 Top 5。",
+                time: { start: 3, end: 4 },
+              },
+              time: 4,
+            },
+          },
+          {
+            type: "session.idle",
+            properties: { sessionID: "runtime-session-1" },
+          },
+        ]),
+      prompt: async () => undefined,
+      messages: async () => [
+        {
+          info: { id: "assistant-intermediate", role: "assistant" },
+          parts: [
+            {
+              id: "text-part-intermediate",
+              sessionID: "runtime-session-1",
+              messageID: "assistant-intermediate",
+              type: "text",
+              text: "正在加载工作流并尝试分页参数。",
+            },
+          ],
+        },
+        {
+          info: { id: "assistant-final", role: "assistant" },
+          parts: [
+            {
+              id: "text-part-final",
+              sessionID: "runtime-session-1",
+              messageID: "assistant-final",
+              type: "text",
+              text: "共识别 56 条瓶颈管段，建议优先改造 Top 5。",
+            },
+          ],
+        },
+      ],
+    } as unknown as OpencodeRuntimeAdapter;
+    const events: Array<{ event: string; data: Record<string, unknown> }> = [];
+
+    await streamPromptResponse({
+      runtime,
+      sessionId: "runtime-session-1",
+      clientSessionId: "client-session-1",
+      message: "分析管网瓶颈",
+      write: (event, data) => events.push({ event, data }),
+    });
+
+    expect(
+      events
+        .filter((item) => item.event === "token")
+        .map((item) => item.data.content)
+        .join(""),
+    ).toBe("共识别 56 条瓶颈管段，建议优先改造 Top 5。");
+  });
+
+  it("uses the final text event cache when the messages lookup fails", async () => {
+    const runtime = {
+      subscribeEvents: async () =>
+        createEventStream([
+          {
+            type: "message.part.updated",
+            properties: {
+              sessionID: "runtime-session-1",
+              part: {
+                id: "text-part-final",
+                sessionID: "runtime-session-1",
+                messageID: "assistant-final",
+                type: "text",
+                text: "最终分析结果。",
+                time: { start: 1, end: 2 },
+              },
+              time: 2,
+            },
+          },
+          {
+            type: "session.idle",
+            properties: { sessionID: "runtime-session-1" },
+          },
+        ]),
+      prompt: async () => undefined,
+      messages: async () => {
+        throw new Error("transient messages lookup failure");
+      },
+    } as unknown as OpencodeRuntimeAdapter;
+    const events: Array<{ event: string; data: Record<string, unknown> }> = [];
+
+    const result = await streamPromptResponse({
+      runtime,
+      sessionId: "runtime-session-1",
+      clientSessionId: "client-session-1",
+      message: "分析管网瓶颈",
+      write: (event, data) => events.push({ event, data }),
+    });
+
+    expect(result.failed).toBe(false);
+    expect(
+      events
+        .filter((item) => item.event === "token")
+        .map((item) => item.data.content)
+        .join(""),
+    ).toBe("最终分析结果。");
+  });
+
+  it("keeps reasoning, tool parameters, and raw errors out of progress details", async () => {
+    const runtime = {
+      subscribeEvents: async () =>
+        createEventStream([
+          {
+            type: "message.part.updated",
+            properties: {
+              sessionID: "runtime-session-1",
+              part: {
+                id: "reasoning-part-1",
+                sessionID: "runtime-session-1",
+                messageID: "assistant-1",
+                type: "reasoning",
+                text: "内部推理：尝试 limit=5000 并读取临时路径。",
+                time: { start: 1, end: 2 },
+              },
+              time: 2,
+            },
+          },
+          {
+            type: "message.part.delta",
+            properties: {
+              sessionID: "runtime-session-1",
+              messageID: "assistant-1",
+              partID: "reasoning-part-1",
+              field: "text",
+              delta: "内部推理：尝试 limit=5000 并读取临时路径。",
+            },
+          },
+          {
+            type: "message.part.updated",
+            properties: {
+              sessionID: "runtime-session-1",
+              part: {
+                id: "tool-part-1",
+                sessionID: "runtime-session-1",
+                messageID: "assistant-1",
+                type: "tool",
+                callID: "call-1",
+                tool: "tjwater_cli",
+                state: {
+                  status: "error",
+                  input: {
+                    command: "network get-all-pipes-properties --limit 5000",
+                    reason: "尝试突破分页限制",
+                  },
+                  error: "HTTP_422 raw backend payload with trace_id=secret-trace",
+                  time: { start: 1, end: 2 },
+                },
+              },
+              time: 2,
+            },
+          },
+          {
+            type: "session.idle",
+            properties: { sessionID: "runtime-session-1" },
+          },
+        ]),
+      prompt: async () => undefined,
+      messages: async () => [],
+    } as unknown as OpencodeRuntimeAdapter;
+    const events: Array<{ event: string; data: Record<string, unknown> }> = [];
+
+    await streamPromptResponse({
+      runtime,
+      sessionId: "runtime-session-1",
+      clientSessionId: "client-session-1",
+      message: "分析管网瓶颈",
+      write: (event, data) => events.push({ event, data }),
+    });
+
+    const reasoningProgress = events.find(
+      (item) => item.event === "progress" && item.data.id === "reasoning-part-1",
+    );
+    const toolProgress = events.find(
+      (item) => item.event === "progress" && item.data.id === "tool-part-1",
+    );
+    expect(reasoningProgress?.data.detail).toBe("分析步骤已整理完成。");
+    expect(toolProgress?.data.detail).toBe("tjwater_cli 调用失败。");
+  });
+
   it("forwards opencode permission requests as SSE payloads", async () => {
     const runtime = {
       subscribeEvents: async () =>