Proyecto inicial, con fallitos de CSS. (Gracias Karim.)

backend/src/index.js

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+import express from 'express';
+import cors from 'cors';
+import jwt from 'jsonwebtoken';
+import bcrypt from 'bcryptjs';
+import sqlite3 from 'sqlite3';
+import { open } from 'sqlite';
+
+const app = express();
+app.use(cors());
+app.use(express.json());
+
+const JWT_SECRET = 'josemi_ultra_secret_123';
+let db;
+
+(async () => {
+    db = await open({ filename: './blog.db', driver: sqlite3.Database });
+    await db.exec(`
+        CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY AUTOINCREMENT, username TEXT UNIQUE, password TEXT);
+        CREATE TABLE IF NOT EXISTS posts (
+            id INTEGER PRIMARY KEY AUTOINCREMENT, title TEXT, slug TEXT UNIQUE, 
+            content TEXT, tags TEXT, url TEXT, type TEXT DEFAULT 'POST', created_at DATETIME DEFAULT CURRENT_TIMESTAMP
+        );
+    `);
+    const pass = await bcrypt.hash('josemivi', 10);
+    await db.run('INSERT OR IGNORE INTO users (username, password) VALUES (?, ?)', ['josemi', pass]);
+    console.log("✅ Backend Conectado");
+})();
+
+app.get('/posts', async (req, res) => {
+    const posts = await db.all('SELECT * FROM posts ORDER BY created_at DESC');
+    res.json(posts);
+});
+
+app.post('/posts/login', async (req, res) => {
+    const { username, password } = req.body;
+    const user = await db.get('SELECT * FROM users WHERE username = ?', [username]);
+    if (user && await bcrypt.compare(password, user.password)) {
+        const token = jwt.sign({ id: user.id }, JWT_SECRET);
+        res.json({ token });
+    } else { res.status(401).json({ error: 'Fallo' }); }
+});
+
+app.post('/posts', async (req, res) => {
+    const token = req.headers.authorization?.split(' ')[1];
+    if (!token) return res.status(401).json({ error: 'No token' });
+    const { title, slug, content, tags, url, type } = req.body;
+    try {
+        // Obligamos a que el slug no sea undefined
+        if(!slug) throw new Error("Slug requerido");
+        await db.run('INSERT INTO posts (title, slug, content, tags, url, type) VALUES (?, ?, ?, ?, ?, ?)', [title, slug, content, tags, url, type]);
+        res.json({ success: true });
+    } catch (e) { res.status(400).json({ error: 'Error al guardar' }); }
+});
+
+app.delete('/posts/:id', async (req, res) => {
+    const token = req.headers.authorization?.split(' ')[1];
+    if (!token) return res.status(401).json({ error: 'No autorizado' });
+    await db.run('DELETE FROM posts WHERE id = ?', [req.params.id]);
+    res.json({ success: true });
+});
+
+app.listen(9002, () => console.log('🚀 API en 9002'));