feat: ai问答

pages/wiki/chat/index.js

@@ -10,6 +10,7 @@ Page({
     _counter: 0,
     quotaRemaining: -1,
     quotaLimit: 0,
+    _pendingPrefill: '',
   },
 
   onLoad(options) {
@@ -23,8 +24,9 @@ Page({
         this.setData({ messages: msgs, _counter: 2 }, () => this.scrollToBottom());
       });
     } else if (options && options.prefillQuestion) {
-      const q = decodeURIComponent(options.prefillQuestion);
-      this.setData({ inputValue: q }, () => this.onSend());
+      // Only save the question; actual send waits for quota check in onShow
+      this._pendingPrefill = decodeURIComponent(options.prefillQuestion);
+      this.setData({ inputValue: this._pendingPrefill });
     }
   },
 
@@ -38,6 +40,16 @@ Page({
         quotaRemaining: res.remaining,
         quotaLimit: res.limit,
       });
+      // Auto-send prefill question only after quota is confirmed
+      if (this._pendingPrefill) {
+        const q = this._pendingPrefill;
+        this._pendingPrefill = '';
+        if (res.remaining > 0) {
+          this.onSend();
+        } else {
+          wx.showToast({ title: '今日问答次数已用完，明天再来吧', icon: 'none', duration: 2500 });
+        }
+      }
     }).catch(() => {});
   },