diff --git a/app/(dashboard)/dashboard/page.tsx b/app/(dashboard)/dashboard/page.tsx
index 270c100..f2a9fdc 100644
--- a/app/(dashboard)/dashboard/page.tsx
+++ b/app/(dashboard)/dashboard/page.tsx
@@ -5,7 +5,7 @@ import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
 import { EmptyState } from "@/components/ui/empty-state"
 import { Progress } from "@/components/ui/progress"
 import { StatusBadge, type StatusBadgeProps } from "@/components/ui/status-badge"
-import { listOrders, listPlayers, listServices, listShops } from "@/lib/api"
+import { getShopIncomeStats, listOrders, listPlayers, listServices, listShops } from "@/lib/api"
 import { statusLabels } from "@/lib/constants"
 import type { Player, PlayerService, Shop } from "@/lib/types"
 import { useAuthStore } from "@/store/auth"
@@ -40,6 +40,7 @@ export default function DashboardPage() {
   const [shop, setShop] = useState<Shop | null>(null)
   const [services, setServices] = useState<PlayerService[]>([])
   const [orders, setOrders] = useState<Awaited<ReturnType<typeof listOrders>>>([])
+  const [monthlyIncome, setMonthlyIncome] = useState<string>("0")
   const recentOrders = orders.slice(0, 3)
 
   useEffect(() => {
@@ -88,6 +89,29 @@ export default function DashboardPage() {
     }
   }, [orderRole])
 
+  useEffect(() => {
+    if (!shop) {
+      setMonthlyIncome("0")
+      return
+    }
+
+    let cancelled = false
+
+    getShopIncomeStats(shop.id)
+      .then((stats) => {
+        if (cancelled) return
+        setMonthlyIncome(stats.monthlyIncome)
+      })
+      .catch(() => {
+        if (cancelled) return
+        setMonthlyIncome("0")
+      })
+
+    return () => {
+      cancelled = true
+    }
+  }, [shop])
+
   const totalOrders = isOwner ? (shop?.totalOrders ?? 0) : (player?.totalOrders ?? 0)
   const rating = isOwner ? (shop?.rating ?? 0) : (player?.rating ?? 0)
   const playerCount = shop?.playerCount ?? 0
@@ -149,7 +173,7 @@ export default function DashboardPage() {
             )}
           </CardHeader>
           <CardContent>
-            <div className="text-2xl font-bold">{isOwner ? "——" : serviceCount}</div>
+            <div className="text-2xl font-bold">{isOwner ? `¥${monthlyIncome}` : serviceCount}</div>
           </CardContent>
         </Card>
       </div>
diff --git a/app/(order)/chat/[id]/page.tsx b/app/(order)/chat/[id]/page.tsx
index e1e4e39..0a8a206 100644
--- a/app/(order)/chat/[id]/page.tsx
+++ b/app/(order)/chat/[id]/page.tsx
@@ -27,15 +27,28 @@ export default function ChatDetailPage({ params }: { params: Promise<{ id: strin
     messages,
     error,
     createDM,
+    joinSession,
     leaveSession,
     sendTextMessage,
     sendImageMessage,
   } = useChatSocket()
 
+  const cacheKey = user?.id ? `chat:dm:${user.id}:${targetUserId}` : null
+
   useEffect(() => {
-    if (!connected) return
-    createDM(targetUserId)
-  }, [connected, createDM, targetUserId])
+    if (!connected || !cacheKey) return
+    const cached = window.localStorage.getItem(cacheKey)
+    if (cached) {
+      joinSession(cached)
+    } else {
+      createDM(targetUserId)
+    }
+  }, [connected, cacheKey, createDM, joinSession, targetUserId])
+
+  useEffect(() => {
+    if (!sessionId || !cacheKey) return
+    window.localStorage.setItem(cacheKey, sessionId)
+  }, [sessionId, cacheKey])
 
   useEffect(
     () => () => {
diff --git a/lib/types.ts b/lib/types.ts
index 5d6b00d..577468b 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -168,7 +168,7 @@ export interface Post {
   content: string
   images: string[]
   tags: string[]
-  linkedOrderId?: number
+  linkedOrderId?: SnowflakeId
   pinned: boolean
   likeCount: number
   commentCount: number
diff --git a/store/auth.ts b/store/auth.ts
index f00e2ea..4b5ddd8 100644
--- a/store/auth.ts
+++ b/store/auth.ts
@@ -22,6 +22,7 @@ interface PersistedAuth {
   currentRole: UserRole
   verifiedRoles: UserRole[]
   verificationStatus: Partial<Record<UserRole, VerificationStatus>>
+  notificationPrefs: NotificationPrefs
   themePreference: ThemePreference
 }
 
@@ -50,6 +51,7 @@ function persistCurrent(state: AuthState) {
     currentRole: state.currentRole,
     verifiedRoles: state.verifiedRoles,
     verificationStatus: state.verificationStatus,
+    notificationPrefs: state.notificationPrefs,
     themePreference: state.themePreference,
   })
 }
@@ -95,13 +97,15 @@ export const useAuthStore = create<AuthState>((set, get) => ({
       persistCurrent(get())
     }
   },
-  setNotificationPref: (type, enabled) =>
+  setNotificationPref: (type, enabled) => {
     set((state) => ({
       notificationPrefs: {
         ...state.notificationPrefs,
         [type]: enabled,
       },
-    })),
+    }))
+    persistCurrent(get())
+  },
   setThemePreference: (theme) => {
     set({ themePreference: theme })
     persistCurrent(get())
@@ -138,6 +142,7 @@ export const useAuthStore = create<AuthState>((set, get) => ({
         currentRole: user.role,
         verifiedRoles: nextVerifiedRoles,
         verificationStatus: nextVerificationStatus,
+        notificationPrefs: state.notificationPrefs,
         themePreference: nextTheme,
       })
 
@@ -160,7 +165,7 @@ export const useAuthStore = create<AuthState>((set, get) => ({
       verifiedRoles: ["consumer"],
       verificationStatus: { consumer: "approved" },
       verificationReasons: {},
-      notificationPrefs: defaultNotificationPrefs,
+  notificationPrefs: persisted?.notificationPrefs ?? defaultNotificationPrefs,
       themePreference: "system",
       user: null,
     })