Refactor MigrationTool and data handling to support student list migration. Update index.vue and settings.vue to streamline configuration loading and improve data provider integration. Remove deprecated local and server storage providers for cleaner architecture.

src/utils/dataProvider.js

@@ -15,25 +15,27 @@ export const formatError = (message, code = "UNKNOWN_ERROR") => ({
 // Main data provider with simplified API
 export default {
   // Provider API methods
-  loadData: async (key, date) => {
+  loadData: async (key) => {
     const provider = getSetting("server.provider");
-    const useServer = provider === "kv-server" || provider === "classworkscloud";
+    const useServer =
+      provider === "kv-server" || provider === "classworkscloud";
 
     if (useServer) {
-      return kvProvider.server.loadData(key, date);
+      return kvProvider.server.loadData(key);
     } else {
-      return kvProvider.local.loadData(date);
+      return kvProvider.local.loadData(key);
     }
   },
 
-  saveData: async (key, data, date) => {
+  saveData: async (key, data) => {
     const provider = getSetting("server.provider");
-    const useServer = provider === "kv-server" || provider === "classworkscloud";
+    const useServer =
+      provider === "kv-server" || provider === "classworkscloud";
 
     if (useServer) {
-      return kvProvider.server.saveData(key, data, date);
+      return kvProvider.server.saveData(key, data);
     } else {
-      return kvProvider.local.saveData(data, date);
+      return kvProvider.local.saveData(key, data);
     }
   },
 };