feat: initialize Svelte frontend with Vite and TypeScript

- Added package.json for project configuration and dependencies.
- Included images for the application (teh-jokur.png and vite.svg).
- Created main application structure with App.svelte, CounterCard.svelte, and AddCounterCard.svelte components.
- Implemented functionality for adding, editing, incrementing, and decrementing counters.
- Added clickOutside utility for handling outside clicks in editing mode.
- Configured TypeScript with appropriate tsconfig files for app and node.
- Set up Vite configuration for building the application.
- Added global styles in app.css for consistent UI design.

backend/index.js

@@ -0,0 +1,108 @@
+const express = require('express');
+const sqlite3 = require('sqlite3').verbose();
+const cors = require('cors');
+const path = require('path');
+const multer = require('multer');
+const fs = require('fs');
+
+const app = express();
+const dbPath = path.join(__dirname, 'db.sqlite');
+const db = new sqlite3.Database(dbPath);
+const upload = multer({ dest: path.join(__dirname, 'uploads/') });
+
+app.use(cors());
+app.use(express.json());
+app.use('/uploads', express.static(path.join(__dirname, 'uploads')));
+
+// Initialize database and ensure counters table exists
+db.serialize(() => {
+  db.run(`CREATE TABLE IF NOT EXISTS counters (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    value INTEGER NOT NULL DEFAULT 0,
+    name TEXT NOT NULL DEFAULT 'Counter',
+    image TEXT
+  )`);
+});
+
+// Get all counters
+app.get('/api/counters', (req, res) => {
+  db.all('SELECT * FROM counters', (err, rows) => {
+    if (err) return res.status(500).json({ error: err.message });
+    // Ensure id and value are numbers
+    const counters = rows.map(row => ({
+      ...row,
+      id: Number(row.id),
+      value: Number(row.value)
+    }));
+    res.json(counters);
+  });
+});
+
+
+// Create a new counter with image
+app.post('/api/counters', upload.single('image'), (req, res) => {
+  const { name = 'Counter', value = 0 } = req.body;
+  const image = req.file ? `/uploads/${req.file.filename}` : null;
+  db.run('INSERT INTO counters (name, value, image) VALUES (?, ?, ?)', [name, value, image], function (err) {
+    if (err) return res.status(500).json({ error: err.message });
+    res.json({ id: Number(this.lastID), name, value: Number(value), image });
+  });
+});
+
+// Update a counter (now supports image upload)
+app.put('/api/counters/:id', upload.single('image'), (req, res) => {
+  const { name, value } = req.body;
+  const id = req.params.id;
+  let image = null;
+
+  // If a new image is uploaded, get its path
+  if (req.file) {
+    image = `/uploads/${req.file.filename}`;
+    // Optionally, delete the old image file
+    db.get('SELECT image FROM counters WHERE id = ?', [id], (err, row) => {
+      if (row && row.image) {
+        const oldImagePath = path.join(__dirname, '..', row.image);
+        fs.unlink(oldImagePath, () => { }); // Ignore errors
+      }
+    });
+  }
+
+  // Build dynamic SQL and params
+  let fields = [];
+  let params = [];
+  if (name !== undefined) { fields.push('name = ?'); params.push(name); }
+  if (value !== undefined) { fields.push('value = ?'); params.push(value); }
+  if (image !== null) { fields.push('image = ?'); params.push(image); }
+  if (fields.length === 0) return res.status(400).json({ error: 'No valid fields to update.' });
+
+  params.push(id);
+  const sql = `UPDATE counters SET ${fields.join(', ')} WHERE id = ?`;
+
+  db.run(sql, params, function (err) {
+    if (err) return res.status(500).json({ error: err.message });
+    res.json({ updated: this.changes });
+  });
+});
+
+// Delete a counter
+app.delete('/api/counters/:id', (req, res) => {
+  db.run('DELETE FROM counters WHERE id = ?', [req.params.id], function (err) {
+    if (err) return res.status(500).json({ error: err.message });
+    res.json({ deleted: this.changes });
+  });
+});
+
+// Serve static frontend files
+const clientBuildPath = path.join(__dirname, '..', 'frontend', 'dist');
+app.use(express.static(clientBuildPath));
+
+// For SPA: serve index.html for any unknown route (after API and uploads)
+// app.get('*', (req, res) => {
+//   if (req.path.startsWith('/api') || req.path.startsWith('/uploads')) return res.status(404).end();
+//   res.sendFile(path.join(clientBuildPath, 'index.html'));
+// });
+
+const PORT = 3000;
+app.listen(PORT, () => {
+  console.log(`API server running on http://localhost:${PORT}`);
+});