Add scenic application flow aligned with Android.

Implement scenic apply models, API, upload, UI, and tests; wire entry from permission apply pages and include related permission/scenic selection UI fixes.

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/Features/Home/ViewModels/PermissionApplyViewModel.swift

@@ -163,9 +163,23 @@ final class PermissionApplyViewModel {
             .flatMap(\.scenic)
     }
 
+    func clearRoleSelection() {
+        selectedRoleId = nil
+        selectedRoleName = ""
+        selectedScenicIds = []
+        selectedScenicNames = []
+        availableScenics = []
+        availableRoles = availableRoles.map { role in
+            var copy = role
+            copy.isSelected = false
+            return copy
+        }
+        notifyStateChange()
+    }
+
     func submit(api: HomeAPI) async {
         guard let roleId = selectedRoleId else {
-            onShowMessage?("请先选择角色")
+            onShowMessage?("请选择角色")
             return
         }
         let newScenicIds = selectedScenicIds.filter { id in