feat: add deployment guide, backup functionality, and cron jobs for automated backups

backup-db.mjs

@@ -0,0 +1,40 @@
+import Database from "better-sqlite3";
+import fs from "fs";
+import path from "path";
+
+const dbPath = "data/database.sqlite";
+const backupDir = "backups";
+
+// Ensure backup directory exists
+if (!fs.existsSync(backupDir)) {
+    fs.mkdirSync(backupDir);
+}
+
+// Generate timestamp for backup filename
+const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
+const backupPath = path.join(backupDir, `backup-${timestamp}.sqlite`);
+
+// Create backup by copying the database file
+fs.copyFileSync(dbPath, backupPath);
+
+console.log(`✅ Backup created: ${backupPath}`);
+
+// Cleanup: keep only last 30 backups
+const files = fs.readdirSync(backupDir)
+    .filter(f => f.startsWith('backup-'))
+    .map(f => ({
+        name: f,
+        path: path.join(backupDir, f),
+        mtime: fs.statSync(path.join(backupDir, f)).mtime
+    }))
+    .sort((a, b) => b.mtime - a.mtime); // Sort by modification time, newest first
+
+if (files.length > 30) {
+    const toDelete = files.slice(30);
+    toDelete.forEach(f => {
+        fs.unlinkSync(f.path);
+        console.log(`🗑️ Deleted old backup: ${f.name}`);
+    });
+}
+
+console.log(`📁 Total backups kept: ${Math.min(files.length, 30)}`);