fix(web): agent check default model fallback; ensure browser session before desktop iframe (FIX-5)

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/components/browser/desktop-view.tsx

@@ -132,22 +132,29 @@ function DesktopView({
   });
 
   // INT-3(VER-3b):桌面 iframe 直连 Selkies,不经过截图 / 操作接口,不会触发服务端的被动重连 →
-  // 打开桌面时先调一次幂等的 reconnect(上游上下文还在时服务端什么都不做),失败再走自动重连
+  // 打开桌面时先调一次幂等的 reconnect(上游上下文还在时服务端什么都不做),失败再走自动重连。
+  // FIX-5(VER-4):先等这次确认结束再连桌面画面,不再先连上黑屏、等 5 秒黑屏检测才重连
   const ensure = useBrowserReconnect(site.id);
   const { mutate: ensureMutate } = ensure;
   const sid = s && s.controller !== "closed" ? s.id : null;
   const ensured = useRef<string | null>(null);
+  const [ensuredSid, setEnsuredSid] = useState<string | null>(null);
   useEffect(() => {
     if (!sid || ensured.current === sid) return;
     ensured.current = sid;
-    ensureMutate(sid, { onError: () => setStuck(true) });
+    ensureMutate(sid, {
+      onError: () => setStuck(true),
+      onSettled: () => setEnsuredSid(sid),
+    });
   }, [sid, ensureMutate]);
+  /** 会话已确认(或已关闭):可以连桌面画面 */
+  const ready = !sid || ensuredSid === sid;
 
   // 画面加载失败或黑屏超过 5 秒:每个会话自动重连一次(之后靠「重新连接」按钮)
   const blankTried = useRef<string | null>(null);
   // biome-ignore lint/correctness/useExhaustiveDependencies: reloadKey 变化 = 新一轮加载,重新计时
   useEffect(() => {
-    if (!sid || blankTried.current === sid) return;
+    if (!sid || !ready || blankTried.current === sid) return;
     const t = setTimeout(() => {
       if (loaded && !desktopBlank(frame.current)) return;
       blankTried.current = sid;
@@ -155,7 +162,7 @@ function DesktopView({
       setStuck(true);
     }, BLANK_TIMEOUT_MS);
     return () => clearTimeout(t);
-  }, [sid, loaded, reloadKey]);
+  }, [sid, ready, loaded, reloadKey]);
   // 别处(Agent 操作、截图)触发的重连成功后也重建桌面连接
   const reconnectedAt = s?.reconnect?.status === "ok" ? s.reconnect.at : null;
   const prevReconnect = useRef(reconnectedAt);
@@ -187,8 +194,9 @@ function DesktopView({
   const waiting = waitingText(s.waitingReason);
   const cred = credentialBadge(s.credential);
   const leaseHolder = s.lease ? holderName(s.lease.holder) : null;
-  const conn: { tone: StatusTone; text: string } =
-    rc.state.phase === "reconnecting"
+  const conn: { tone: StatusTone; text: string } = !ready
+    ? { tone: "neutral", text: "正在确认浏览器会话" }
+    : rc.state.phase === "reconnecting"
       ? { tone: "warning", text: "正在重新连接" }
       : rc.state.phase === "failed"
         ? { tone: "destructive", text: "连接中断" }
@@ -278,6 +286,7 @@ function DesktopView({
             <ReconnectPanel state={rc.state} onRetry={rc.retry} />
           </div>
         ) : null}
+        {ready ? (
           <iframe
             key={reloadKey}
             ref={frame}
@@ -287,6 +296,17 @@ function DesktopView({
             allow="clipboard-read; clipboard-write; fullscreen; keyboard-map"
             className="block aspect-[1280/900] w-full border-0 bg-scrim"
           />
+        ) : (
+          <div
+            role="status"
+            className="grid aspect-[1280/900] w-full place-items-center bg-scrim text-caption text-muted-foreground"
+          >
+            <span className="flex items-center gap-2">
+              <LoaderCircle className="h-4 w-4 animate-spin" />
+              正在确认浏览器会话…
+            </span>
+          </div>
+        )}
       </div>
     </div>
   );

apps/web/app/components/schedules/agent-check-card.tsx

@@ -31,7 +31,12 @@ const plainSummary = (t: string) =>
 const capTitle = (id: string) => CAPABILITY_CATALOG[id as KnownCapabilityId]?.title ?? id;
 
 /** 默认上游(巡检没有单独的上游设置,跟随 Agent 设置里的默认上游) */
-export type DefaultUpstream = { name: string; model: string | null } | null;
+export type DefaultUpstream = {
+  name: string;
+  /** 上游的默认模型;上游没填时是模型目录的第一个(modelFromCatalog) */
+  model: string | null;
+  modelFromCatalog?: boolean;
+} | null;
 
 const modelsTitle = (models: { provider: string | null; model: string; count: number }[]) =>
   models.map((m) => `${m.provider ? `${m.provider} · ` : ""}${m.model}:${m.count} 次`).join("\n");
@@ -152,9 +157,16 @@ export function AgentCheckCard({
               ) : null}
             </span>
           ) : upstream ? (
-            <span className="break-words">
-              默认上游 {upstream.name}
-              {upstream.model ? ` · ${upstream.model}` : ""}
+            <span
+              className="break-words"
+              title={
+                upstream.modelFromCatalog
+                  ? "上游没有指定默认模型，运行时使用模型目录里的第一个"
+                  : "还没有运行记录，按默认上游显示"
+              }
+            >
+              默认上游 {upstream.name} · {upstream.model ?? "模型未指定"}
+              {upstream.modelFromCatalog ? <span className="text-muted-foreground">（目录首个）</span> : null}
             </span>
           ) : (
             <span className="text-muted-foreground">未配置 Agent 上游</span>

apps/web/app/components/schedules/schedule-board.tsx

@@ -3,7 +3,7 @@ import { SCHEDULE_CHANGED_EVENT, type ScheduledJob } from "@umt/contracts";
 import { AlertTriangle, Bot, CalendarClock, CircleCheck, Coins, LoaderCircle, Plus, XCircle } from "lucide-react";
 import { type ReactNode, useEffect, useRef, useState } from "react";
 import { useLocation } from "react-router";
-import { usePiUpstreams } from "~/api/pi.ts";
+import { usePiUpstreamModels, usePiUpstreams } from "~/api/pi.ts";
 import { useScheduleBoard } from "~/api/schedules.ts";
 import { EmptyState, ErrorState, LoadingState } from "~/components/console/empty-state.tsx";
 import { StatTile } from "~/components/console/stat-tile.tsx";
@@ -96,7 +96,16 @@ export function PlanBoard({ highlightJob }: { highlightJob?: string }) {
   const autoJobs = items.filter((j) => j.kind === "task");
   const checks = items.filter((j) => j.kind === "agent_check");
   const def = upstreams.data?.items.find((u) => u.isDefault);
-  const upstream: DefaultUpstream = def ? { name: def.name, model: def.defaultModel ?? null } : null;
+  // 上游没填默认模型时,运行时用模型目录的第一个(packages/agent pi/upstream.ts pickModel),这里同样取目录首个
+  const catalog = usePiUpstreamModels(def && !def.defaultModel ? def.id : null);
+  const catalogModel = catalog.data?.models[0]?.id ?? null;
+  const upstream: DefaultUpstream = def
+    ? {
+        name: def.name,
+        model: def.defaultModel ?? catalogModel,
+        modelFromCatalog: !def.defaultModel && !!catalogModel,
+      }
+    : null;
   const s = planStats(items);
   const val = (n: number) => (board.isPending ? "…" : board.isError ? "—" : n);
 

docs/runbook/browser.md

@@ -268,7 +268,7 @@ pixelflux + labwc Wayland 桌面 + Selkies 2.0 Web 客户端)+ camofox 1.17.0 **
 | 初始化 | `init-umt-desktop` | 由 `CAMOFOX_ACCESS_KEY` 派生 Selkies 控制 / 只读口令;覆盖 labwc autostart;把 `/root/.camofox` 交给 `abc` |
 | 反代 | `apps/server/src/modules/desktop` | `/api/v1/browser/desktop/{sessionId}/*` → 容器 `:3000`(静态客户端 + `api/websockets`);只接受控制台会话 |
 | 前端 | `apps/web/app/components/browser/desktop-view.tsx` | 原站视图 Tab:桌面可用且是安全上下文 → 桌面模式;否则截图模式并说明原因;可手动切换 |
-| 自愈(INT-3) | 同上 | 打开桌面先调一次幂等 `POST /browser/sessions/{id}/reconnect`(iframe 直连 Selkies 不触发被动重连);画面 5 秒未加载或视频流未出帧 → 每个会话自动重连一次并重建桌面连接,之后靠「重新连接」按钮 |
+| 自愈(INT-3 / FIX-5) | 同上 | 打开桌面先调一次幂等 `POST /browser/sessions/{id}/reconnect`(iframe 直连 Selkies 不触发被动重连),等它返回后才加载桌面 iframe(期间显示「正在确认浏览器会话…」,FIX-5 起不再先连上黑屏);画面 5 秒未加载或视频流未出帧 → 每个会话自动重连一次并重建桌面连接,之后靠「重新连接」按钮 |
 | HTTPS | compose `caddy`(profile `tls`)+ `docker/browser-desktop/Caddyfile` | 可选;已有反代终结 TLS 时不用 |
 
 窗口:无标题栏、最大化铺满 1280×900(`BROWSER_DESKTOP_WIDTH/HEIGHT`),`HARDEN_DESKTOP` 去掉终端 / sudo / xdg-open,