feat: implement database reset and demo population scripts with tests

package.json

@@ -9,8 +9,11 @@
     "configure": "node scripts/configure.mjs",
     "db:setup": "tsx scripts/setup.ts",
     "db:seed": "tsx scripts/seed-demo.ts",
+    "db:clear": "tsx scripts/reset-instance.ts clear",
+    "db:reset": "tsx scripts/reset-instance.ts demo",
     "test": "tsx --test tests/unit.test.ts",
     "test:db": "tsx --test tests/database.test.ts",
+    "test:reset": "tsx --test tests/reset.test.ts",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {