fix: 状态镜像防冲掉——服务端按 key 合并，客户端读不到宿主就不写

01_content/src/client/index.tsx

@@ -12,7 +12,7 @@ import { previewFromEvents, previewFromNodes, readSessionPreview, presetApiOf, m
 import { photoStore, kindOf } from './photoStore'
 import { DEFAULT_BG_SVG, b64ToBlob } from './defaultBg'
 import { WAVE_BG_B64 } from './waveBg'
-import { loadHostState, queueHostSave, markHydrated, flushHostSave } from './hostState'
+import { loadHostState, queueHostSave, markHydrated, staysReadOnly, flushHostSave } from './hostState'
 
 /**
  * dsh-worktable 客户端（v2）：侧边栏底部「工作台」区块。
@@ -1433,8 +1433,15 @@ function WorktableSection(props: any) {
   useEffect(() => {
     let cancelled = false
     void (async () => {
-      const host = await loadHostState()
+      const res = await loadHostState()
       if (cancelled) return
+      if (!res.reachable) {
+        // 读不到就不写：宁可本次只在本地，也不拿空状态覆盖宿主镜像
+        staysReadOnly()
+        console.warn('[dsh-worktable] 宿主状态暂不可读，本次会话不写镜像')
+        return
+      }
+      const host = res.state
       let localAt = 0
       try { localAt = Number(localStorage.getItem(SAVED_AT_KEY) ?? '0') || 0 } catch {}
       const hostAt = typeof host?.updatedAt === 'number' ? host.updatedAt : 0
@@ -1442,7 +1449,7 @@ function WorktableSection(props: any) {
         if (host.projects) persistProjects(normalizeProjects(host.projects))
         if (host.view) persistView(normalizeView(host.view))
       }
-      markHydrated()
+      markHydrated(host ? { projects: host.projects, view: host.view } : {})
       if (hostAt <= localAt) flushHostSave()
     })()
     const flush = () => flushHostSave()