chore: align Node 26.7.0 toolchain

package.json

@@ -3,19 +3,20 @@
 	"private": true,
 	"type": "module",
 	"engines": {
-		"node": ">=26"
+		"node": ">=26.7.0 <27"
 	},
 	"packageManager": "[email protected]",
 	"scripts": {
 		"dev": "next dev",
 		"build": "next build",
 		"start": "next start",
+		"toolchain:check": "node scripts/check-node-toolchain.mjs",
 		"lint": "biome check .",
 		"biome:lint": "biome check .",
 		"format": "biome format --write .",
 		"knip": "knip --include files,dependencies,devDependencies,unlisted,binaries",
 		"jobs:worker": "tsx scripts/jobs-worker.ts",
-		"test": "DATABASE_URL=mysql://root:root@localhost:3306/test vitest run",
+		"test": "vitest run",
 		"typecheck": "tsc --noEmit",
 		"db:generate": "drizzle-kit generate",
 		"db:migrate": "tsx scripts/apply-migrations.ts",