feat: Theme Of The Month

src/background.ts

@@ -9,6 +9,21 @@ import {
   runCloudSettingsPoll,
 } from "./background/cloudSettingsAutoSync";
 
+/**
+ * Session-only dev-mode override of the content API base.
+ *
+ * Stored in a module-level variable (not `chrome.storage`) so it is wiped
+ * automatically when the browser/service-worker process restarts. Content
+ * scripts re-sync this on every page load via `setDevApiBase` so the value
+ * survives transient service-worker terminations within the same browser
+ * session.
+ */
+const DEFAULT_API_BASE = "https://betterseqta.org";
+let DEV_API_BASE: string | null = null;
+function apiBase(): string {
+  return DEV_API_BASE ?? DEFAULT_API_BASE;
+}
+
 function reloadSeqtaPages() {
   const result = browser.tabs.query({});
   function open(tabs: any) {
@@ -29,7 +44,7 @@ type MessageSender = { (response?: unknown): void };
 
 function handleFetchThemes(request: any, sendResponse: MessageSender): boolean {
   const { token } = request;
-  const apiUrl = `https://betterseqta.org/api/themes?type=betterseqta&limit=100&nocache=${Date.now()}`;
+  const apiUrl = `${apiBase()}/api/themes?type=betterseqta&limit=100&nocache=${Date.now()}`;
   const githubUrl = `https://raw.githubusercontent.com/BetterSEQTA/BetterSEQTA-Themes/main/store/themes.json?nocache=${Date.now()}`;
   const headers: Record<string, string> = {};
   if (token) headers["Authorization"] = `Bearer ${token}`;
@@ -57,7 +72,7 @@ function handleFetchThemeDetails(request: any, sendResponse: MessageSender): boo
   }
   const headers: Record<string, string> = {};
   if (token) headers["Authorization"] = `Bearer ${token}`;
-  fetch(`https://betterseqta.org/api/themes/${themeId}`, { cache: "no-store", headers })
+  fetch(`${apiBase()}/api/themes/${themeId}`, { cache: "no-store", headers })
     .then((r) => r.json())
     .then(sendResponse)
     .catch((err) => {
@@ -283,7 +298,7 @@ function handleCloudFavorite(request: any, sendResponse: MessageSender): boolean
     return false;
   }
   const isFavorite = action === "favorite";
-  fetch(`https://betterseqta.org/api/themes/${themeId}/favorite`, {
+  fetch(`${apiBase()}/api/themes/${themeId}/favorite`, {
     method: isFavorite ? "POST" : "DELETE",
     headers: { Authorization: `Bearer ${token}` },
   })
@@ -310,8 +325,19 @@ function isSeqtaOrigin(origin: string): boolean {
   }
 }
 
+function handleSetDevApiBase(request: any): boolean {
+  const url = typeof request?.url === "string" ? request.url.trim() : null;
+  if (url && /^https?:\/\//.test(url)) {
+    DEV_API_BASE = url.replace(/\/$/, "");
+  } else {
+    DEV_API_BASE = null;
+  }
+  return false;
+}
+
 const MESSAGE_HANDLERS: Record<string, MessageHandler> = {
   reloadTabs: () => reloadSeqtaPages(),
+  setDevApiBase: handleSetDevApiBase,
   extensionPages: (req) => {
     browser.tabs.query({}).then((tabs) => {
       for (const tab of tabs) {

src/css/injected.scss

@@ -3726,6 +3726,59 @@ div.day-empty {
   color: var(--text-primary);
 }
 
+.whatsnewHeader.themeOfTheMonthHeader {
+  height: auto;
+  min-height: unset;
+}
+.whatsnewHeader.themeOfTheMonthHeader h1 {
+  line-height: 1.2;
+}
+.themeOfTheMonthSubtitle {
+  margin: 0.25rem 0 0;
+  font-size: 0.95rem;
+  font-weight: 500;
+  letter-spacing: 0.01em;
+  text-transform: uppercase;
+  color: color-mix(in srgb, var(--text-primary) 65%, transparent);
+}
+.themeOfTheMonthFooter {
+  display: flex;
+  justify-content: center;
+  padding: 1rem 0;
+}
+.themeOfTheMonthViewButton {
+  appearance: none;
+  border: none;
+  cursor: pointer;
+  padding: 0.65rem 1.25rem;
+  border-radius: 9999px;
+  font-size: 1rem;
+  font-weight: 600;
+  letter-spacing: 0.01em;
+  background: var(--better-pri, #6366f1);
+  color: white;
+  transition: transform 0.15s ease, filter 0.15s ease;
+}
+.themeOfTheMonthViewButton:hover {
+  filter: brightness(1.1);
+  transform: scale(1.03);
+}
+.themeOfTheMonthViewButton:active {
+  transform: scale(0.98);
+}
+
+.bsplus-theme-highlight {
+  animation: bsplusThemeHighlightPulse 1.4s ease-in-out 2;
+}
+@keyframes bsplusThemeHighlightPulse {
+  0%, 100% {
+    box-shadow: 0 0 0 0 color-mix(in srgb, var(--better-pri, #6366f1) 0%, transparent);
+  }
+  50% {
+    box-shadow: 0 0 0 6px color-mix(in srgb, var(--better-pri, #6366f1) 60%, transparent);
+  }
+}
+
 .popup-media-fullscreenable {
   cursor: pointer;
   transition: opacity 0.2s ease-in-out, transform 0.2s ease-in-out;

src/interface/pages/settings/general.svelte

@@ -15,8 +15,34 @@
   import CloudHeader from "@/interface/components/store/CloudHeader.svelte"
   import { cloudAuth } from "@/seqta/utils/CloudAuth"
   import { showPrivacyNotification } from "@/seqta/utils/Openers/OpenPrivacyNotification"
+  import { showThemeOfTheMonthPopupNow } from "@/seqta/utils/Openers/OpenThemeOfTheMonthPopup"
   import { closeExtensionPopup } from "@/seqta/utils/Closers/closeExtensionPopup"
   import { getSnapshotForUpload } from "@/seqta/utils/cloudSettingsSync"
+  import { getStoredOverride, setApiBase } from "@/seqta/utils/DevApiBase"
+
+  let devApiBaseInput = $state<string>(getStoredOverride() ?? "")
+  let devApiBaseActive = $state<string | null>(getStoredOverride())
+
+  function applyDevApiBase() {
+    const trimmed = devApiBaseInput.trim()
+    if (trimmed === "") {
+      setApiBase(null)
+      devApiBaseActive = null
+      return
+    }
+    if (!/^https?:\/\//.test(trimmed)) {
+      alert("Please enter a full URL starting with http:// or https://")
+      return
+    }
+    setApiBase(trimmed)
+    devApiBaseActive = trimmed.replace(/\/$/, "")
+  }
+
+  function clearDevApiBase() {
+    devApiBaseInput = ""
+    setApiBase(null)
+    devApiBaseActive = null
+  }
 
   import { getAllPluginSettings } from "@/plugins"
   import type { BooleanSetting, StringSetting, NumberSetting, SelectSetting, ButtonSetting, HotkeySetting, ComponentSetting } from "@/plugins/core/types"
@@ -483,6 +509,22 @@
           />
         </div>
       </div>
+      <div class="flex justify-between items-center px-4 py-3">
+        <div class="pr-4">
+          <h2 class="text-sm font-bold">Show Theme of the Month</h2>
+          <p class="text-xs">Fetch and show the current month's popup now (ignores dismissed state)</p>
+        </div>
+        <div>
+          <Button
+            onClick={async () => {
+              closeExtensionPopup();
+              await new Promise((resolve) => setTimeout(resolve, 100));
+              await showThemeOfTheMonthPopupNow();
+            }}
+            text="Show Now"
+          />
+        </div>
+      </div>
       <div class="flex justify-between items-center px-4 py-3">
         <div class="pr-4">
           <h2 class="text-sm font-bold">Export cloud settings JSON</h2>
@@ -492,6 +534,31 @@
           <Button onClick={exportCloudSettingsJsonToFile} text="Export to file" />
         </div>
       </div>
+      <div class="flex flex-col gap-2 px-4 py-3">
+        <div class="flex justify-between items-start gap-3">
+          <div class="pr-4">
+            <h2 class="text-sm font-bold">API Base URL (session only)</h2>
+            <p class="text-xs">Override the content API host for this browser session. Cleared on restart. Affects themes, theme of the month, and other server-driven content.</p>
+            {#if devApiBaseActive}
+              <p class="text-xs mt-1 text-amber-600 dark:text-amber-400">
+                Override active: <span class="font-mono">{devApiBaseActive}</span>
+              </p>
+            {/if}
+          </div>
+        </div>
+        <div class="flex gap-2 items-center">
+          <input
+            type="text"
+            placeholder="https://betterseqta.org"
+            bind:value={devApiBaseInput}
+            class="flex-1 px-2 py-1 text-xs rounded border bg-white dark:bg-zinc-800 border-zinc-300 dark:border-zinc-700 text-zinc-900 dark:text-zinc-100"
+          />
+          <Button onClick={applyDevApiBase} text="Apply" />
+          {#if devApiBaseActive}
+            <Button onClick={clearDevApiBase} text="Clear" />
+          {/if}
+        </div>
+      </div>
     </div>
   {/if}
 </div>

src/interface/pages/store.svelte

@@ -18,6 +18,7 @@
   import Backgrounds from '../components/store/Backgrounds.svelte'
   import { cloudAuth } from '@/seqta/utils/CloudAuth'
   import SignInToFavoriteModal from '../components/SignInToFavoriteModal.svelte'
+  import { consumePendingHighlightThemeId } from '@/seqta/utils/openThemeStoreWithHighlight'
 
   const themeManager = ThemeManager.getInstance();
   let cloudLoggedIn = $state(cloudAuth.state.isLoggedIn);
@@ -122,13 +123,39 @@
     }
   };
 
+  function focusThemeById(themeId: string) {
+    const match = themes.find((t) => t.id === themeId)
+      ?? themes.find((t) => t.flavours?.some((f) => f.id === themeId));
+    if (match) {
+      activeTab = 'themes';
+      searchTerm = '';
+      displayTheme = match;
+    }
+  }
+
+  function onHighlightThemeEvent(e: Event) {
+    const detail = (e as CustomEvent).detail;
+    if (detail?.themeId && typeof detail.themeId === 'string') {
+      focusThemeById(detail.themeId);
+    }
+  }
+
   // On mount
   onMount(async () => {
+    window.addEventListener('bsplus:highlight-theme', onHighlightThemeEvent);
+
     await fetchThemes();
     await fetchCurrentThemes();
     
     darkMode = (await browser.storage.local.get('DarkMode')).DarkMode === 'true';
     darkMode = $settingsState.DarkMode;
+
+    const pending = consumePendingHighlightThemeId();
+    if (pending) focusThemeById(pending);
+
+    return () => {
+      window.removeEventListener('bsplus:highlight-theme', onHighlightThemeEvent);
+    };
   });
 
   // Filter themes (list is already featured-first, then newest; filter preserves order)

src/plugins/built-in/themes/theme-manager.ts

@@ -11,6 +11,7 @@ import { settingsState } from "@/seqta/utils/listeners/SettingsState";
 import debounce from "@/seqta/utils/debounce";
 import { themeUpdates } from "@/interface/hooks/ThemeUpdates";
 import { cloudAuth } from "@/seqta/utils/CloudAuth";
+import { getApiBase } from "@/seqta/utils/DevApiBase";
 import { updateAllColors } from "@/seqta/ui/colors/Manager";
 import {
   clearCustomThemeAdaptiveCssVariables,
@@ -545,7 +546,10 @@ export class ThemeManager {
     }
   }
 
-  private readonly THEME_API_BASE = 'https://betterseqta.org/api';
+  /** Use a getter so dev-mode session-only base URL overrides take effect immediately. */
+  private get THEME_API_BASE(): string {
+    return `${getApiBase()}/api`;
+  }
   private readonly GITHUB_THEMES_BASE = 'https://raw.githubusercontent.com/BetterSEQTA/BetterSEQTA-Themes/main/store/themes';
 
   /**

src/plugins/monofile.ts

@@ -105,7 +105,7 @@ export async function finishLoad() {
     console.error("Error during loading cleanup:", err);
   }
 
-  runStartupPopupQueue();
+  void runStartupPopupQueue();
 }
 
 export function GetCSSElement(file: string) {

src/seqta/utils/DevApiBase.ts

@@ -0,0 +1,65 @@
+import browser from "webextension-polyfill";
+
+const DEFAULT_BASE = "https://betterseqta.org";
+const KEY = "bsplus_dev_api_base";
+
+/**
+ * Returns the current content-API base URL.
+ *
+ * Reads from `sessionStorage` so a developer can temporarily override the
+ * server for testing. The value is cleared when the browser session ends,
+ * leaving production traffic unaffected for normal users.
+ */
+export function getApiBase(): string {
+  try {
+    if (typeof sessionStorage === "undefined") return DEFAULT_BASE;
+    const v = sessionStorage.getItem(KEY);
+    if (v && /^https?:\/\//.test(v)) return v.replace(/\/$/, "");
+  } catch {
+    // sessionStorage may throw in some restricted contexts; fall back silently.
+  }
+  return DEFAULT_BASE;
+}
+
+/**
+ * Persist a session-scoped override and broadcast it to the background script
+ * so its `fetch` calls hit the same host.
+ *
+ * Pass `null` to clear the override.
+ */
+export function setApiBase(url: string | null): void {
+  try {
+    if (!url) {
+      sessionStorage.removeItem(KEY);
+    } else {
+      sessionStorage.setItem(KEY, url.replace(/\/$/, ""));
+    }
+  } catch {
+    // ignore
+  }
+  void browser.runtime
+    .sendMessage({ type: "setDevApiBase", url: url || null })
+    .catch(() => {});
+}
+
+/** Returns the override URL if one is currently set in this session. */
+export function getStoredOverride(): string | null {
+  try {
+    if (typeof sessionStorage === "undefined") return null;
+    return sessionStorage.getItem(KEY);
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Send the current session override to the background script.
+ * Call this early in page load so the background context stays in sync after
+ * service-worker restarts.
+ */
+export function syncApiBaseToBackground(): void {
+  const override = getStoredOverride();
+  void browser.runtime
+    .sendMessage({ type: "setDevApiBase", url: override })
+    .catch(() => {});
+}

src/seqta/utils/Openers/OpenThemeOfTheMonthPopup.ts

@@ -0,0 +1,210 @@
+import browser from "webextension-polyfill";
+import stringToHTML from "../stringToHTML";
+import { settingsState } from "../listeners/SettingsState";
+import { openPopup, closePopup } from "./PopupManager";
+import { getApiBase } from "../DevApiBase";
+import { openThemeStoreWithHighlight } from "../openThemeStoreWithHighlight";
+import { cloudAuth } from "../CloudAuth";
+
+/**
+ * Server response shape from `/api/theme-of-the-month/current`.
+ * Hero image is resolved client-side via the theme store API when `theme_id` is set.
+ */
+export interface ThemeOfTheMonthEntry {
+  id: string;
+  month: string;
+  title: string;
+  description: string;
+  cover_image: string | null;
+  theme_id: string | null;
+  theme: { id: string; name: string; slug: string } | null;
+  created_at: number;
+  updated_at: number;
+}
+
+/**
+ * Fetches the current month's Theme of the Month entry from the API.
+ * Returns `null` when no entry is configured for this month, or when the
+ * request fails (we never want a network problem to block other startup
+ * popups).
+ */
+export async function fetchThemeOfTheMonth(): Promise<ThemeOfTheMonthEntry | null> {
+  try {
+    const res = await fetch(`${getApiBase()}/api/theme-of-the-month/current`, {
+      cache: "no-store",
+    });
+    if (!res.ok) return null;
+    const text = await res.text();
+    if (!text) return null;
+    const data = JSON.parse(text);
+    if (!data || typeof data !== "object" || !data.id) return null;
+    return data as ThemeOfTheMonthEntry;
+  } catch (err) {
+    console.warn("[ThemeOfTheMonth] Failed to fetch current entry:", err);
+    return null;
+  }
+}
+
+/** True when we have a new monthly entry the user hasn't dismissed yet. */
+export function shouldShowThemeOfTheMonth(entry: ThemeOfTheMonthEntry | null): boolean {
+  if (!entry) return false;
+  return settingsState.themeOfTheMonthLastSeenId !== entry.id;
+}
+
+function escapeHTML(str: string): string {
+  return str
+    .replace(/&/g, "&amp;")
+    .replace(/</g, "&lt;")
+    .replace(/>/g, "&gt;")
+    .replace(/"/g, "&quot;")
+    .replace(/'/g, "&#39;");
+}
+
+function formatMonthLabel(month: string): string {
+  const [yyyy, mm] = month.split("-");
+  if (!yyyy || !mm) return month;
+  const date = new Date(parseInt(yyyy, 10), parseInt(mm, 10) - 1, 1);
+  return date.toLocaleDateString("en-US", { year: "numeric", month: "long" });
+}
+
+/** Same priority as the theme store: marquee, then cover/banner. */
+function heroUrlFromStoreTheme(theme: {
+  marqueeImage?: string | null;
+  coverImage?: string | null;
+}): string | null {
+  const url = (theme.marqueeImage || theme.coverImage || "").trim();
+  return url || null;
+}
+
+/**
+ * Loads hero image for a store theme via the background script (same path as
+ * {@link ThemeSelector} / theme store detail fetches).
+ */
+export async function fetchThemeStoreHeroImage(themeId: string): Promise<string | null> {
+  try {
+    const token = await cloudAuth.getStoredToken();
+    const res = (await browser.runtime.sendMessage({
+      type: "fetchThemeDetails",
+      themeId,
+      token: token ?? undefined,
+    })) as { success?: boolean; data?: { theme?: { marqueeImage?: string; coverImage?: string } } };
+
+    if (!res?.success || !res?.data?.theme) return null;
+    return heroUrlFromStoreTheme(res.data.theme);
+  } catch (err) {
+    console.warn("[ThemeOfTheMonth] Failed to fetch theme store image:", err);
+    return null;
+  }
+}
+
+/** Linked theme store image, else optional admin-uploaded cover. */
+async function resolvePopupHeroImageUrl(entry: ThemeOfTheMonthEntry): Promise<string | null> {
+  const themeId = entry.theme_id ?? entry.theme?.id;
+  if (themeId) {
+    const fromStore = await fetchThemeStoreHeroImage(themeId);
+    if (fromStore) return fromStore;
+  }
+  const fallback = entry.cover_image?.trim();
+  return fallback || null;
+}
+
+function createHeroImageContainer(imageUrl: string, alt: string): HTMLElement {
+  const container = document.createElement("div");
+  container.classList.add("whatsnewImgContainer");
+
+  const img = document.createElement("img");
+  img.src = imageUrl;
+  img.alt = alt;
+  img.classList.add("whatsnewImg");
+  container.appendChild(img);
+
+  return container;
+}
+
+/**
+ * Renders the Theme of the Month announcement popup.
+ */
+export async function OpenThemeOfTheMonthPopup(
+  entry: ThemeOfTheMonthEntry,
+  onDismissed?: () => void,
+) {
+  if (document.getElementById("whatsnewbk")) {
+    onDismissed?.();
+    return;
+  }
+
+  const monthLabel = formatMonthLabel(entry.month);
+
+  const header = stringToHTML(
+    /* html */ `
+    <div class="whatsnewHeader themeOfTheMonthHeader">
+      <h1>${escapeHTML(entry.title)}</h1>
+      <p class="themeOfTheMonthSubtitle">Theme of the Month · ${escapeHTML(monthLabel)}</p>
+    </div>`,
+  ).firstChild as HTMLElement;
+
+  const heroUrl = await resolvePopupHeroImageUrl(entry);
+  const imageContainer = heroUrl ? createHeroImageContainer(heroUrl, entry.title) : null;
+
+  const descriptionHTML = escapeHTML(entry.description).replace(/\n/g, "<br />");
+  const text = stringToHTML(/* html */ `
+    <div class="whatsnewTextContainer themeOfTheMonthDescription" style="height: 50%; overflow-y: auto; font-size: 1.2rem; line-height: 1.6;">
+      <p>${descriptionHTML}</p>
+    </div>
+  `).firstChild as HTMLElement;
+
+  let footer: HTMLElement | null = null;
+  const linkedThemeId = entry.theme_id ?? entry.theme?.id;
+  const linkedThemeName = entry.theme?.name;
+  if (linkedThemeId && linkedThemeName) {
+    footer = document.createElement("div");
+    footer.classList.add("whatsnewFooter", "themeOfTheMonthFooter");
+
+    const viewBtn = document.createElement("button");
+    viewBtn.type = "button";
+    viewBtn.classList.add("themeOfTheMonthViewButton");
+    viewBtn.textContent = `View "${linkedThemeName}" in the Theme Store`;
+    viewBtn.addEventListener("click", () => {
+      void closePopup();
+      openThemeStoreWithHighlight(linkedThemeId);
+    });
+
+    footer.appendChild(viewBtn);
+  }
+
+  settingsState.themeOfTheMonthLastSeenId = entry.id;
+
+  const content: (Node | null)[] = [];
+  if (imageContainer) content.push(imageContainer);
+  content.push(text);
+  if (footer) content.push(footer);
+
+  openPopup({
+    header,
+    content,
+    afterClose: onDismissed,
+  });
+}
+
+/**
+ * Dev helper: fetch the current month's entry and show the popup immediately,
+ * even if the user has already dismissed it this month.
+ */
+export async function showThemeOfTheMonthPopupNow(): Promise<void> {
+  const entry = await fetchThemeOfTheMonth();
+  if (!entry) {
+    alert(
+      "No Theme of the Month entry for the current month (UTC). Create one in the website admin, or check your dev API base URL.",
+    );
+    return;
+  }
+
+  settingsState.themeOfTheMonthLastSeenId = undefined;
+
+  if (document.getElementById("whatsnewbk")) {
+    await closePopup();
+    await new Promise((resolve) => setTimeout(resolve, 150));
+  }
+
+  await OpenThemeOfTheMonthPopup(entry);
+}

src/seqta/utils/Openers/StartupPopupQueue.ts

@@ -4,20 +4,40 @@ import {
   shouldShowEngageParentsAnnouncement,
   showEngageParentsToast,
 } from "./OpenEngageParentsAnnouncement";
+import {
+  fetchThemeOfTheMonth,
+  OpenThemeOfTheMonthPopup,
+  shouldShowThemeOfTheMonth,
+} from "./OpenThemeOfTheMonthPopup";
+import { syncApiBaseToBackground } from "../DevApiBase";
 
 type QueueStep = (goNext: () => void) => void;
 
 /**
  * Runs startup modals in order: What's New (if the extension just updated),
- * then shows the SEQTA Engage toast (once, non-blocking).
+ * Theme of the Month (when a new monthly entry hasn't been seen), then shows
+ * the SEQTA Engage toast (once, non-blocking).
  */
-export function runStartupPopupQueue() {
+export async function runStartupPopupQueue() {
+  // Make sure the background script knows about any dev-mode API override
+  // before we start firing requests.
+  syncApiBaseToBackground();
+
   const steps: QueueStep[] = [];
 
   if (settingsState.justupdated) {
     steps.push((goNext) => OpenWhatsNewPopup(goNext));
   }
 
+  // Fetch the Theme of the Month before queueing so we don't show an empty
+  // popup if the network or server is unavailable.
+  const themeOfTheMonth = await fetchThemeOfTheMonth();
+  if (shouldShowThemeOfTheMonth(themeOfTheMonth)) {
+    steps.push((goNext) => {
+      void OpenThemeOfTheMonthPopup(themeOfTheMonth!, goNext);
+    });
+  }
+
   function runNext() {
     const step = steps.shift();
     if (step) step(runNext);

src/seqta/utils/openThemeStoreWithHighlight.ts

@@ -0,0 +1,39 @@
+import { OpenStorePage } from "@/seqta/ui/renderStore";
+
+/**
+ * Module-level handoff for "open the theme store and highlight this theme".
+ *
+ * The store page is mounted lazily inside a Shadow DOM the first time it
+ * opens, so a `CustomEvent` listener would have to be wired up before mount
+ * (causing a race). Using a shared cell keeps the producer (popup button) and
+ * consumer (store `onMount`) decoupled without that timing constraint.
+ *
+ * The store reads & clears this on mount via {@link consumePendingHighlightThemeId}.
+ */
+let pendingHighlightThemeId: string | null = null;
+
+/** Read and clear the pending theme id (called by the store on mount). */
+export function consumePendingHighlightThemeId(): string | null {
+  const id = pendingHighlightThemeId;
+  pendingHighlightThemeId = null;
+  return id;
+}
+
+/**
+ * Opens the theme store and asks it to focus / highlight the given theme.
+ * If the store is already mounted we dispatch a DOM event so it can react
+ * without remounting; otherwise the store consumes the pending id on mount.
+ */
+export function openThemeStoreWithHighlight(themeId: string): void {
+  pendingHighlightThemeId = themeId;
+
+  const existing = document.getElementById("store");
+  if (existing) {
+    window.dispatchEvent(
+      new CustomEvent("bsplus:highlight-theme", { detail: { themeId } }),
+    );
+    return;
+  }
+
+  OpenStorePage();
+}

src/types/storage.ts

@@ -36,6 +36,8 @@ export interface SettingsState {
   engageParentsAnnouncementShown?: boolean;
   /** One-time announcement: BS Cloud automatic settings sync (last in startup popup queue). */
   bsCloudAutoSyncAnnouncementShown?: boolean;
+  /** ID of the last Theme of the Month entry shown to the user (shows once per new entry). */
+  themeOfTheMonthLastSeenId?: string;
   timeFormat?: string;
   animations: boolean;
   defaultPage: string;