fix(pages): adapt all pages to backend-aligned types

Replace removed fields with available data sources throughout UI:
- order pages: use service.title instead of consumer/player names
- chat: look up sender from session.participants, remove readonly
- community: simplify post cards, keep pinned icon
- post detail: keep pinned/linkedOrderId display
- shop rules: use string commissionValue
- dashboard: parse string amounts for income display
- dispute/review: remove initiator/avatar references

app/(order)/dispute/[id]/page.tsx

@@ -213,10 +213,8 @@ export default function DisputePage({ params }: { params: Promise<{ id: string }
   }
 
   if (existingDispute) {
-    const isInitiator = userId === existingDispute.initiatorId
     const canRespond =
       isParticipant &&
-      !isInitiator &&
       !existingDispute.respondentReason &&
       (existingDispute.status === "open" || existingDispute.status === "reviewing")
     const canAppeal =
@@ -246,7 +244,7 @@ export default function DisputePage({ params }: { params: Promise<{ id: string }
               <div className="flex items-center gap-2 text-sm">
                 <FileText className="h-4 w-4 text-muted-foreground" />
                 <span className="text-muted-foreground">发起人:</span>
-                {existingDispute.initiatorName}
+                发起方
               </div>
               <div className="flex items-center gap-2 text-sm">
                 <Clock className="h-4 w-4 text-muted-foreground" />
@@ -480,9 +478,7 @@ export default function DisputePage({ params }: { params: Promise<{ id: string }
             <AlertTriangle className="h-5 w-5 text-yellow-500" />
             发起争议
           </CardTitle>
-          <p className="text-sm text-muted-foreground">
-            {order.service.title} · {order.playerName}
-          </p>
+          <p className="text-sm text-muted-foreground">{order.service.title}</p>
         </CardHeader>
         <CardContent className="space-y-4">
           <div className="space-y-2">