Load current terminal session tail

platform_web/components/ServerManagementTerminalDrawer.test.tsx

@@ -99,6 +99,21 @@ describe("ServerManagementTerminalDrawer", () => {
     expect(systemLine?.querySelector("time")?.textContent).toBe(formatTerminalServerTime(serverTime));
   });
 
+  it("loads the current session tail when stream metadata arrives", async () => {
+    const stream = logStream("stdout-current", "session-current", "process.stdout");
+    stream.latestSeq = 42;
+    apiMocks.queryLogStream.mockResolvedValue({ logStreamId: stream.id, entries: [logEntry(41, "tail before drawer opened"), logEntry(42, "latest stored output")], nextSeq: 42, latestSeq: 42 });
+    await renderDrawer();
+
+    await emitSession("session-current");
+    await emitStream(stream);
+    await flushPromises();
+
+    expect(container?.textContent).toContain("tail before drawer opened");
+    expect(container?.textContent).toContain("latest stored output");
+    expect(apiMocks.queryLogStream).toHaveBeenCalledWith({ logStreamId: stream.id, afterSeq: 0, limit: 500 });
+  });
+
   it("renders an empty current session without accepting unrelated or sessionless logs", async () => {
     await renderDrawer();
 
@@ -153,7 +168,9 @@ describe("ServerManagementTerminalDrawer", () => {
     const oldStream = logStream("stdout-old", "session-old", "process.stdout", "2026-08-01T00:00:00Z");
     oldStream.latestSeq = 900;
     apiMocks.listLogStreams.mockResolvedValue({ items: [oldStream], count: 1 });
-    apiMocks.queryLogStream.mockResolvedValue({ logStreamId: oldStream.id, entries: [logEntry(1, "selected historical output", "2026-08-01T00:00:01Z")], nextSeq: 1, latestSeq: 1 });
+    apiMocks.queryLogStream.mockImplementation((request: { logStreamId: string }) => Promise.resolve(request.logStreamId === oldStream.id
+      ? { logStreamId: oldStream.id, entries: [logEntry(1, "selected historical output", "2026-08-01T00:00:01Z")], nextSeq: 1, latestSeq: 1 }
+      : { logStreamId: request.logStreamId, entries: [], nextSeq: 0, latestSeq: 0 }));
     await renderDrawer();
     await emitSession("session-current");
     await emitStream(logStream("stdout-current", "session-current", "process.stdout"));

platform_web/components/ServerManagementTerminalDrawer.tsx

@@ -102,6 +102,7 @@ export function ServerManagementTerminalDrawer({ open, serverId, serverName, plu
   const initialHistoryPendingRef = useRef(false);
   const liveSessionRef = useRef<string | null | undefined>(undefined);
   const historyRequestRef = useRef(0);
+  const liveTailLoadedRef = useRef(new Map<string, number>());
   const quickCommands = useMemo(() => terminalQuickCommandsForPlugin(pluginId), [pluginId]);
   const supportsCommands = quickCommands.length > 0;
 
@@ -124,6 +125,22 @@ export function ServerManagementTerminalDrawer({ open, serverId, serverName, plu
     });
   }, []);
 
+  const loadLiveStreamTail = useCallback((stream: LogStreamResponse) => {
+    const latestSeq = Number(stream.latestSeq);
+    if (!Number.isFinite(latestSeq) || latestSeq <= 0) return;
+    const loadedThrough = liveTailLoadedRef.current.get(stream.id) ?? 0;
+    if (loadedThrough >= latestSeq) return;
+    liveTailLoadedRef.current.set(stream.id, latestSeq);
+    void platformApiClient.queryLogStream({ logStreamId: stream.id, afterSeq: Math.max(0, latestSeq - terminalHistoryWindow), limit: terminalHistoryWindow }).then((response) => {
+      if (!eventBelongsToLiveSession(stream.logSessionId, liveSessionRef.current)) return;
+      appendLines(response.entries.map((entry) => terminalLineFromLog({ ...stream, latestSeq: response.latestSeq }, entry)));
+      lockTerminalFollow();
+    }).catch((error) => {
+      if (!eventBelongsToLiveSession(stream.logSessionId, liveSessionRef.current)) return;
+      appendLines([terminalSystemLine("warn", `当前会话尾部日志读取失败，等待后续实时输出：${error instanceof Error ? error.message : "未知错误"}`, "SYSTEM", `tail-error-${stream.id}`, serverTimeRef.current)]);
+    });
+  }, [appendLines, lockTerminalFollow]);
+
   useEffect(() => {
     if (!open) return;
     setStreams({ status: "loading" });
@@ -137,6 +154,7 @@ export function ServerManagementTerminalDrawer({ open, serverId, serverName, plu
     setHistoryLines({ status: "idle" });
     setSelectedHistoryStreamId("");
     liveSessionRef.current = undefined;
+    liveTailLoadedRef.current.clear();
     serverTimeRef.current = undefined;
     historyRequestRef.current += 1;
     initialHistoryPendingRef.current = true;
@@ -180,6 +198,7 @@ export function ServerManagementTerminalDrawer({ open, serverId, serverName, plu
       if (!stream || !eventBelongsToLiveSession(stream.logSessionId, liveSessionRef.current)) return;
       ready = true;
       setStreams((current) => ({ status: "ready", data: mergeLogStreams(current.status === "ready" ? current.data : [], stream) }));
+      loadLiveStreamTail(stream);
     });
     events.addEventListener("ready", () => {
       ready = true;
@@ -198,7 +217,7 @@ export function ServerManagementTerminalDrawer({ open, serverId, serverName, plu
       if (!ready) setStreams({ status: "error", reason: "实时日志推送连接失败" });
     };
     return () => events.close();
-  }, [appendLines, lockTerminalFollow, open, serverId]);
+  }, [appendLines, loadLiveStreamTail, lockTerminalFollow, open, serverId]);
 
   useEffect(() => {
     if (!open || !historyOpen) return;