chore: remove debug code and restore phone authorization as required

- Remove debug register page entry and console.log from login
- Remove phone skip option, phone authorization is mandatory
- Restore incomplete registration check (no phone → redirect to register)

miniprogram/pages/register/register.wxss

@@ -84,27 +84,11 @@
   border: none;
 }
 
-.phone-actions {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-top: 12rpx;
-  padding: 0 8rpx;
-}
-
 .phone-hint {
   font-size: 24rpx;
   color: #999999;
-}
-
-.phone-skip {
-  font-size: 24rpx;
-  color: #E6508C;
-}
-
-.phone-skipped {
-  background: #f5f5f5;
-  border-color: #d9d9d9;
+  text-align: center;
+  margin-top: 12rpx;
 }
 
 .phone-done {