🔧 Initial dev copy from live

static/login.js

@@ -0,0 +1,55 @@
+/* Login page — external script, no inline handlers.
+ * Loaded by the /login route. Reads data attributes from the form for
+ * i18n strings so the server does not need to inject JS literals.
+ */
+document.addEventListener('DOMContentLoaded', function () {
+  var form = document.getElementById('login-form');
+  var input = document.getElementById('pw');
+
+  if (!form || !input) return;
+
+  var invalidPw = form.getAttribute('data-invalid-pw') || 'Invalid password';
+  var connFailed = form.getAttribute('data-conn-failed') || 'Connection failed';
+
+  function showErr(msg) {
+    var err = document.getElementById('err');
+    if (err) { err.textContent = msg; err.style.display = 'block'; }
+  }
+
+  function hideErr() {
+    var err = document.getElementById('err');
+    if (err) { err.style.display = 'none'; }
+  }
+
+  async function doLogin(e) {
+    e.preventDefault();
+    var pw = input.value;
+    hideErr();
+    try {
+      var res = await fetch('api/auth/login', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ password: pw }),
+        credentials: 'include',
+      });
+      var data = {};
+      try { data = await res.json(); } catch (_) {}
+      if (res.ok && data.ok) {
+        window.location.href = './';
+      } else {
+        showErr(data.error || invalidPw);
+      }
+    } catch (ex) {
+      showErr(connFailed);
+    }
+  }
+
+  form.addEventListener('submit', doLogin);
+
+  input.addEventListener('keydown', function (e) {
+    if (e.key === 'Enter') {
+      e.preventDefault();
+      doLogin(e);
+    }
+  });
+});