feat: add verify-deploy, check-env, and db-optimize helper scripts

scripts/check-env.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# Check if .env has all keys from .env.example
+cd "$(dirname "$0")/.."
+if [ ! -f .env ]; then echo ".env missing"; exit 1; fi
+if [ ! -f .env.example ]; then echo ".env.example missing, cannot compare."; exit 0; fi
+
+# Extract keys and compare
+env_keys=$(cut -d'=' -f1 .env | sort)
+ex_keys=$(cut -d'=' -f1 .env.example | sort)
+
+missing=$(comm -23 <(echo "$ex_keys") <(echo "$env_keys"))
+if [ -n "$missing" ]; then
+    echo "Missing env keys:"
+    echo "$missing"
+    exit 1
+fi
+echo "All env keys present."