feat: upgrade TypeScript to 5.7.3 with vue-tsc 2.2.12 compatibility and synchronized lockfiles

backend/backend.ts

@@ -5,8 +5,7 @@
 import bcrypt from 'bcryptjs';
 import * as jwt from 'jsonwebtoken';
 import * as dotenv from 'dotenv';
-// @ts-expect-error Types exist???
-import { Send } from "express-serve-static-core";
+// TypedResponse interface with proper Express typing
 import cors from 'cors';
 import rateLimit from 'express-rate-limit';
 import { generateSlug } from "random-word-slugs";
@@ -70,7 +69,7 @@
 }
 
 export interface TypedResponse<ResBody> extends Express.Response {
-  json: Send<ResBody, this>;
+  json: (body: ResBody) => this;
 }
 
 // *************************************************
@@ -157,7 +156,7 @@
 });
 
 // Login Endpoint
-app.post('/login', async (req: TypedRequestBody<{ username: string; password: string }>, res: TypedResponse<{ token: string }>) => {
+app.post('/login', async (req: TypedRequestBody<{ username: string; password: string }>, res: TypedResponse<{ token: string } | { message: string } | { message: string; error: any }>) => {
   try {
     const { username, password } = req.body;
     const user = await User.findOne({ username });
@@ -195,7 +194,7 @@
 });
 
 // Save Data Endpoint
 app.post('/save', authenticate, async (req: AuthenticatedRequest & TypedRequestBody<{ data: any }>, res: Express.Response) => {
   try {
     const { username } = req.user as jwt.JwtPayload & { username: string };
     const factoryData: Factory[] = req.body;
@@ -245,7 +244,7 @@
 });
 
 // Load Data Endpoint
 app.get('/load', authenticate, async (req: AuthenticatedRequest & TypedRequestBody<{ data: any }>, res: Express.Response) => {
   try {
     const { username } = req.user as jwt.JwtPayload & { username: string };
 
@@ -260,7 +259,7 @@
 });
 
 // Share link create endpoint
 app.post('/share', optionalAuthenticate, shareRateLimit, async (req: AuthenticatedRequest & TypedRequestBody<{ data: any }>, res: Express.Response) => {
   try {
     const { username } = req.user as jwt.JwtPayload & { username: string };
     const factoryData = req.body;