fix(weixin_ilink): 换码阈值5s->60s——码未过期一律复用,防前端高频login-qr砍确认会话

plugins/channels/weixin_ilink/login_admin.go

@@ -133,13 +133,18 @@ func (a *Adapter) StartLogin(ctx context.Context) (LoginQR, error) {
 			a.log.Info("weixin_ilink: login in progress, reusing qrcode", "phase", sess.currentPhase())
 			return LoginQR{Qrcode: sess.qrcode, Image: sess.image}, nil
 		}
-		// A literal double-click within the reuse window: serve the same code.
-		if time.Since(sess.startedAt) < qrReuseWindow {
+		// Serve the same code while it is still fresh OR already scanned — always
+		// reuse, never swap, so an in-progress bind (which WeChat may be confirming
+		// right now) is never dropped. A frontend flooding login-qr calls therefore
+		// cannot cancel the session under the user's scan. Only a genuinely stale
+		// (>60s server TTL) and never-scanned code is re-minted.
+		if time.Since(sess.startedAt) < 60*time.Second {
+			a.log.Info("weixin_ilink: login in progress, reusing qrcode", "phase", sess.currentPhase())
 			return LoginQR{Qrcode: sess.qrcode, Image: sess.image}, nil
 		}
-		// Not scanned yet and past the reuse window: mint a fresh code, cancelling the
-		// old (unscanned) poll. failLogin guards a cancelled goroutine from clobbering
-		// the new session's state.
+		// Code stale (>60s) and never scanned: mint a fresh one, cancelling the old
+		// (expired, unscanned) poll. failLogin guards a cancelled goroutine from
+		// clobbering the new session's state.
 		a.log.Info("weixin_ilink: previous qrcode not scanned, minting a fresh one")
 		if sess.cancel != nil {
 			sess.cancel()

plugins/channels/weixin_ilink/login_reuse_test.go

@@ -75,7 +75,7 @@ func TestStartLogin_ScanedPastWindowReusesQR(t *testing.T) {
 	// could keep the QR. Then a refresh must still reuse it.
 	ad.loginMu.Lock()
 	if ad.loginSession != nil {
-		ad.loginSession.startedAt = time.Now().Add(-(qrReuseWindow + time.Second))
+		ad.loginSession.startedAt = time.Now().Add(-(60*time.Second + time.Second))
 	}
 	ad.loginMu.Unlock()
 
@@ -128,7 +128,7 @@ func TestStartLogin_WaitingPastWindowReMints(t *testing.T) {
 
 	ad.loginMu.Lock()
 	if ad.loginSession != nil {
-		ad.loginSession.startedAt = time.Now().Add(-(qrReuseWindow + time.Second))
+		ad.loginSession.startedAt = time.Now().Add(-(60*time.Second + time.Second))
 	}
 	ad.loginMu.Unlock()