ISMIS Helper: cross-browser build, CI, PDF fixes, Chrome download fix

Squash merge of feat/ismis-helper into prod.

popup.js

@@ -0,0 +1,131 @@
+'use strict';
+
+// Cross-browser API namespace (see background.js). No-op in Firefox.
+if (typeof browser === 'undefined' || browser == null) {
+  var browser = (typeof chrome !== 'undefined' ? chrome : {});
+}
+
+const $ = (sel) => document.querySelector(sel);
+
+const MASTER_KEY = 'enabled';
+const PROFILES_KEY = 'profiles';
+
+let editingProfileId = null;
+
+// ---- Master toggle ----
+async function loadMaster() {
+  const { enabled } = await browser.storage.local.get(MASTER_KEY);
+  $('#masterToggle').checked = enabled !== false;
+  $('#masterLabel').textContent = enabled === false ? 'Disabled' : 'Enabled';
+}
+$('#masterToggle').addEventListener('change', async (e) => {
+  await browser.storage.local.set({ [MASTER_KEY]: e.target.checked });
+  $('#masterLabel').textContent = e.target.checked ? 'Enabled' : 'Disabled';
+});
+
+// ---- PDF settings: truncate long course descriptions (default ON) ----
+async function loadPdfSettings() {
+  const s = await browser.storage.local.get(['truncateDescription', 'showYearLevel', 'customYearLevel']);
+  $('#truncateToggle').checked = s.truncateDescription !== false;
+  $('#showYearToggle').checked = s.showYearLevel !== false;
+  $('#customYear').value = s.customYearLevel || '';
+}
+$('#truncateToggle').addEventListener('change', async (e) => {
+  await browser.storage.local.set({ truncateDescription: e.target.checked });
+});
+$('#showYearToggle').addEventListener('change', async (e) => {
+  await browser.storage.local.set({ showYearLevel: e.target.checked });
+});
+$('#customYear').addEventListener('change', async (e) => {
+  await browser.storage.local.set({ customYearLevel: e.target.value.trim() });
+});
+
+// ---- Profiles ----
+async function getProfiles() {
+  const { profiles } = await browser.storage.local.get(PROFILES_KEY);
+  return profiles || [];
+}
+async function saveProfiles(profiles) {
+  await browser.storage.local.set({ [PROFILES_KEY]: profiles });
+}
+
+function renderProfiles(profiles) {
+  const list = $('#profileList');
+  list.innerHTML = '';
+  for (const p of profiles) {
+    const li = document.createElement('li');
+    const name = document.createElement('div');
+    name.className = 'name';
+    name.innerHTML = '<strong>' + escapeHtml(p.name) + '</strong><br><span class="user">' + escapeHtml(p.username) + '</span>';
+    const toggle = document.createElement('input');
+    toggle.type = 'checkbox';
+    toggle.checked = !!p.enabled;
+    toggle.title = 'Enable/disable';
+    toggle.addEventListener('change', async () => {
+      if (toggle.checked) {
+        profiles.forEach((x) => { x.enabled = x.id === p.id; });
+      } else {
+        p.enabled = false;
+      }
+      await saveProfiles(profiles);
+      renderProfiles(await getProfiles());
+    });
+    const edit = document.createElement('button');
+    edit.className = 'btn';
+    edit.textContent = 'Edit';
+    edit.addEventListener('click', () => openProfileForm(p));
+    const del = document.createElement('button');
+    del.className = 'btn';
+    del.textContent = 'Delete';
+    del.addEventListener('click', async () => {
+      await saveProfiles(profiles.filter((x) => x.id !== p.id));
+      renderProfiles(await getProfiles());
+    });
+    li.append(toggle, name, edit, del);
+    list.appendChild(li);
+  }
+}
+
+function escapeHtml(s) {
+  return String(s).replace(/[&<>"']/g, (c) => ({
+    '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;'
+  }[c]));
+}
+
+function openProfileForm(p) {
+  editingProfileId = p ? p.id : null;
+  $('#pName').value = p ? p.name : '';
+  $('#pUsername').value = p ? p.username : '';
+  $('#pPassword').value = p ? p.password : '';
+  $('#pEnabled').checked = p ? !!p.enabled : true;
+  $('#profileForm').hidden = false;
+}
+$('#addProfile').addEventListener('click', () => openProfileForm(null));
+$('#cancelProfile').addEventListener('click', () => { $('#profileForm').hidden = true; });
+$('#saveProfile').addEventListener('click', async () => {
+  const profiles = await getProfiles();
+  const data = {
+    id: editingProfileId || Date.now().toString(),
+    name: $('#pName').value.trim(),
+    username: $('#pUsername').value.trim(),
+    password: $('#pPassword').value,
+    enabled: $('#pEnabled').checked
+  };
+  if (!data.name || !data.username) return;
+  if (editingProfileId) {
+    const i = profiles.findIndex((x) => x.id === editingProfileId);
+    if (i >= 0) profiles[i] = data;
+  } else {
+    profiles.push(data);
+  }
+  await saveProfiles(profiles);
+  $('#profileForm').hidden = true;
+  renderProfiles(profiles);
+});
+
+// ---- Init ----
+(async function init() {
+  await loadMaster();
+  await loadPdfSettings();
+  renderProfiles(await getProfiles());
+})();