refactor(chat): rely on server message limits

src/stores/chat/chat-state.ts

@@ -18,23 +18,12 @@ export interface ChatState {
    * - 非 VIP / 游客：固定 false，走 HTTP
    */
   wsConnected: boolean;
-  /** 游客剩余配额（次/天）—— 仅游客业务展示用
-   */
-  guestRemainingQuota: number;
-  /** 游客总配额（仅游客展示用） */
-  guestTotalQuota: number;
-  quotaExceededTrigger: number;
   paywallTriggered: boolean;
   paywallReason: "daily_limit" | "photo_paywall" | null;
   paywallDetail: { usedToday: number; limit: number } | null;
   isLoadingMore: boolean;
   hasMore: boolean;
   historyOffset: number;
-  /** 游客配额加载完成标志（仅 guestSession 期间） —— default false
-   * - guestSession.initializing 走 always barrier：`quotaLoaded && historyLoaded` 才进 ready
-   * - user sessions 永不为 true（不调 loadQuota）—— OK，不影响 barrier
-   */
-  quotaLoaded: boolean;
   /** history 加载完成标志（initial load —— local → network → save 跑完）
    * - guestSession.initializing / user sessions initializing 走 always barrier
    * - 不被 `loadMoreHistoryActor` 设置（翻页是另一码事）
@@ -46,15 +35,11 @@ export const initialState: ChatState = {
   messages: [],
   isReplyingAI: false,
   wsConnected: false,
-  guestRemainingQuota: 0,
-  guestTotalQuota: 0,
-  quotaExceededTrigger: 0,
   paywallTriggered: false,
   paywallReason: null,
   paywallDetail: null,
   isLoadingMore: false,
   hasMore: true,
   historyOffset: 0,
-  quotaLoaded: false,
   historyLoaded: false,
 };