diff --git a/js/newsletter.js b/js/newsletter.js
deleted file mode 100644
index 6a0b5cd..0000000
--- a/js/newsletter.js
+++ /dev/null
@@ -1,128 +0,0 @@
-/**
- * Newsletter signup — posts the visitor's email to a configured serverless
- * endpoint. No credential is ever sent: the serverless function authenticates
- * with an API token it reads from platform env/secrets at deploy time.
- *
- * Pure-ish by design (no DOM, injectable fetch), so every behaviour is unit
- * testable in Node; the browser wiring at the bottom is guarded accordingly.
- */
-import { NEWSLETTER_ENDPOINT } from "./newsletter-config.js";
-
-/** User-safe message shown when the signup cannot be completed. */
-export const NEWSLETTER_ERROR_MESSAGE =
-  "Sorry, the newsletter signup isn't available right now. Please try again later.";
-
-/** Confirmation message shown after a successful signup. */
-export const NEWSLETTER_SUCCESS_MESSAGE = "Thanks for subscribing!";
-
-/** Simple email shape check; the HTML5 `type="email"` input is the primary gate. */
-export function isValidEmail(value) {
-  return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(String(value).trim());
-}
-
-/**
- * Read the trimmed email value from a form.
- * Works with a real DOM form and with the minimal fake form used in tests.
- *
- * @param {{querySelectorAll(selector: string): ArrayLike<{name: string, value: string}>}} form
- * @returns {string}
- */
-export function readFormEmail(form) {
-  for (const el of form.querySelectorAll("[name]")) {
-    if (el.name === "email") return el.value.trim();
-  }
-  return "";
-}
-
-/**
- * POST the email to the serverless endpoint with no credential in the request
- * — no auth header, no token in the body or URL. The serverless function reads
- * its API token from platform env/secrets, never from the client. A clearly
- * invalid email fails fast with a user-safe error and no network call. Any
- * non-2xx response and any network failure map to the same generic message, so
- * the endpoint internals, any status code, and any raw response body are never
- * surfaced to the visitor.
- *
- * @param {string} email
- * @param {{endpoint?: string, fetchImpl?: typeof fetch}} [options]
- * @returns {Promise<{ok: boolean, message: string}>}
- */
-export async function submitNewsletterSignup(
-  email,
-  { endpoint = NEWSLETTER_ENDPOINT, fetchImpl = fetch } = {},
-) {
-  if (!isValidEmail(email)) {
-    return { ok: false, message: NEWSLETTER_ERROR_MESSAGE };
-  }
-
-  let response;
-  try {
-    response = await fetchImpl(endpoint, {
-      method: "POST",
-      headers: {
-        "Content-Type": "application/json",
-      },
-      body: JSON.stringify({ email }),
-    });
-  } catch {
-    return { ok: false, message: NEWSLETTER_ERROR_MESSAGE };
-  }
-
-  if (!response.ok) {
-    return { ok: false, message: NEWSLETTER_ERROR_MESSAGE };
-  }
-  return { ok: true, message: NEWSLETTER_SUCCESS_MESSAGE };
-}
-
-/**
- * Handle a newsletter form submit: validate the email, POST it, and surface
- * the result (confirmation or user-safe error) through `setStatus`.
- *
- * @param {HTMLFormElement} form
- * @param {{endpoint?: string, fetchImpl?: typeof fetch, setStatus?: (message: string, kind: "success"|"error") => void}} [options]
- * @returns {Promise<{ok: boolean, message: string}>}
- */
-export async function handleNewsletterSubmit(
-  form,
-  {
-    endpoint = NEWSLETTER_ENDPOINT,
-    fetchImpl = fetch,
-    setStatus = defaultSetStatus,
-  } = {},
-) {
-  const email = readFormEmail(form);
-  if (!isValidEmail(email)) {
-    setStatus(NEWSLETTER_ERROR_MESSAGE, "error");
-    return { ok: false, message: NEWSLETTER_ERROR_MESSAGE };
-  }
-
-  const result = await submitNewsletterSignup(email, { endpoint, fetchImpl });
-  setStatus(result.message, result.ok ? "success" : "error");
-  return result;
-}
-
-/** Default status renderer — puts the message into `#newsletter-status`. */
-function defaultSetStatus(message, kind) {
-  const el = document.getElementById("newsletter-status");
-  if (el) {
-    el.textContent = message;
-    el.dataset.kind = kind;
-  }
-}
-
-/**
- * Wire the submit handler onto a newsletter form.
- * @param {HTMLFormElement} form
- */
-export function initNewsletterForm(form, options = {}) {
-  form.addEventListener("submit", (event) => {
-    event.preventDefault();
-    handleNewsletterSubmit(form, options);
-  });
-}
-
-// Browser-only wiring — guarded so this module stays importable in Node tests.
-if (typeof window !== "undefined" && typeof document !== "undefined") {
-  const form = document.getElementById("newsletter-form");
-  if (form) initNewsletterForm(form);
-}