feat: add environment variable password protection and integrate it into the password gate component.

lib/actions/auth.ts

@@ -0,0 +1,17 @@
+'use server';
+
+/**
+ * Verifies if the provided password matches the ACCESS_PASSWORD environment variable.
+ */
+export async function verifyEnvPassword(password: string): Promise<boolean> {
+    const accessPassword = process.env.ACCESS_PASSWORD;
+    if (!accessPassword) return false;
+    return password === accessPassword;
+}
+
+/**
+ * Checks if a password is required by checking the presence of ACCESS_PASSWORD in the environment.
+ */
+export async function isEnvPasswordRequired(): Promise<boolean> {
+    return !!process.env.ACCESS_PASSWORD;
+}