Create .env.example

Author: TheComputationalCore

.env.example

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+# ----------------------------------------------------
+# Database Environment Variables (rename this to .env)
+# ----------------------------------------------------
+
+# JDBC MySQL connection URL
+DB_URL=jdbc:mysql://localhost:3306/testdbone
+
+# Database username
+DB_USER=root
+
+# Database password
+DB_PASS=yourpassword
+
+# ----------------------------------------------------
+# Usage:
+#   Rename `.env.example` → `.env`
+#   Update DB_USER and DB_PASS with your actual values
+#   Export variables before running:
+#
+#   Linux/macOS:
+#       export DB_URL="jdbc:mysql://localhost:3306/testdbone"
+#       export DB_USER="root"
+#       export DB_PASS="yourpassword"
+#
+#   Windows (PowerShell):
+#       setx DB_URL "jdbc:mysql://localhost:3306/testdbone"
+#       setx DB_USER "root"
+#       setx DB_PASS "yourpassword"
+#
+# ----------------------------------------------------