refac: rewrite a lil in rust

.gitignore

@@ -10,6 +10,11 @@ bun.lock
 src/public/resources/pdfjs/pdf.worker.min.mjs
 src/public/resources/pdfjs/pdf.legacy.min.mjs
 
+# Rust / wasm
+/target/
+# wasm-pack output (regenerate with `npm run build:wasm`)
+src/wasm/pkg/
+
 # Build
 extension.zip
 build/

Cargo.lock

@@ -0,0 +1,246 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "base64"
+version = "0.22.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
+name = "betterseqta-wasm"
+version = "0.1.0"
+dependencies = [
+ "base64",
+ "csscolorparser",
+ "percent-encoding",
+ "regex",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "bumpalo"
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+
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+
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+ "phf",
+]
+
+[[package]]
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+
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+
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+ "phf_macros",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
+dependencies = [
+ "phf_shared",
+ "rand",
+]
+
+[[package]]
+name = "phf_macros"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f84ac04429c13a7ff43785d75ad27569f2951ce0ffd30a3321230db2fc727216"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67eabc2ef2a60eb7faa00097bd1ffdb5bd28e62bf39990626a582201b7a754e5"
+dependencies = [
+ "siphasher",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rand"
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+checksum = "5ca0ecfa931c29007047d1bc58e623ab12e5590e8c7cc53200d5202b69266d8a"
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+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+
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+name = "regex"
+version = "1.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e10754a14b9137dd7b1e3e5b0493cc9171fdd105e0ab477f51b72e7f3ac0e276"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+checksum = "8ee5873ec9cce0195efcb7a4e9507a04cd49aec9c83d0389df45b1ef7ba2e649"
+
+[[package]]
+name = "syn"
+version = "2.0.117"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.120"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df52b6d9b87e0c74c9edfa1eb2d9bf85e5d63515474513aa50fa181b3c4f5db1"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.120"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78b1041f495fb322e64aca85f5756b2172e35cd459376e67f2a6c9dffcedb103"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.120"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9dcd0ff20416988a18ac686d4d4d0f6aae9ebf08a389ff5d29012b05af2a1b41"
+dependencies = [
+ "bumpalo",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.120"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49757b3c82ebf16c57d69365a142940b384176c24df52a087fb748e2085359ea"
+dependencies = [
+ "unicode-ident",
+]

Cargo.toml

@@ -0,0 +1,3 @@
+[workspace]
+resolver = "2"
+members = ["wasm/betterseqta-wasm"]

package.json

@@ -1,11 +1,17 @@
 {
   "name": "betterseqtaplus",
-  "version": "3.6.5",
+  "version": "3.6.4",
   "type": "module",
   "description": "Enhance SEQTA Learn's usability and aesthetics! A fork of BetterSEQTA to continue development and add heaps more features!",
   "browserslist": "> 0.5%, last 2 versions, not dead",
   "scripts": {
     "postinstall": "node scripts/copy-pdfjs-assets.mjs",
+    "build:wasm": "npx --yes wasm-pack@0.13.1 build wasm/betterseqta-wasm --target web --out-dir ../../src/wasm/pkg --release && node scripts/rm-wasm-pkg-gitignore.mjs",
+    "prebuild": "npm run build:wasm",
+    "prebuild:chrome": "npm run build:wasm",
+    "prebuild:firefox": "npm run build:wasm",
+    "prebuild:safari": "npm run build:wasm",
+    "prebuild:dev": "npm run build:wasm",
     "autoaudit": "npm audit && npm audit fix && npm run build",
     "dev": "cross-env MODE=chrome vite dev",
     "dev:firefox": "cross-env MODE=firefox vite build --watch",

scripts/rm-wasm-pkg-gitignore.mjs

@@ -0,0 +1,10 @@
+import { unlinkSync } from "node:fs";
+import { join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const root = join(fileURLToPath(new URL("..", import.meta.url)));
+try {
+  unlinkSync(join(root, "src", "wasm", "pkg", ".gitignore"));
+} catch {
+  /* ignore */
+}

src/SEQTA.ts

@@ -10,6 +10,12 @@ import * as plugins from "@/plugins";
 import { main } from "@/seqta/main";
 import { delay } from "./seqta/utils/delay";
 import { initializeHideSensitiveToggle } from "@/seqta/utils/hideSensitiveToggle";
+import {
+  childTextHasSeqtaCopyright,
+  initBetterseqtaWasm,
+  isBetterseqtaWasmReady,
+  titleIsSeqtaLearnOrEngage,
+} from "@/wasm/init";
 
 function registerFetchSeqtaAppLinkListener() {
   browser.runtime.onMessage.addListener((request, _sender, sendResponse) => {
@@ -35,27 +41,67 @@ function registerFetchSeqtaAppLinkListener() {
   });
 }
 
+function scheduleDeferredPluginInitialization() {
+  const start = () => {
+    void plugins.initializePlugins().catch((error) => {
+      console.error("[BetterSEQTA+] Deferred plugin initialization failed:", error);
+    });
+  };
+
+  if (typeof window !== "undefined" && "requestIdleCallback" in window) {
+    const idle = window.requestIdleCallback as (
+      callback: IdleRequestCallback,
+      options?: IdleRequestOptions,
+    ) => number;
+    idle(() => start(), { timeout: 1200 });
+    return;
+  }
+
+  // Fallback for browsers without requestIdleCallback.
+  setTimeout(start, 0);
+}
+
 export let MenuOptionsOpen = false;
 
 var IsSEQTAPage = false;
 let hasSEQTAText = false;
 
+function childTextLooksLikeSeqtaCopyright(text: string): boolean {
+  return text.includes("Copyright (c) SEQTA Software");
+}
+
+function titleLooksLikeSeqtaLearnOrEngage(title: string): boolean {
+  return title.includes("SEQTA Learn") || title.includes("SEQTA Engage");
+}
+
 // This check is placed outside of the document load event due to issues with EP (https://github.com/BetterSEQTA/BetterSEQTA-Plus/issues/84)
 if (document.childNodes[1]) {
+  void bootstrap();
+}
+
+async function bootstrap() {
+  try {
+    await initBetterseqtaWasm();
+  } catch (e) {
+    console.warn("[BetterSEQTA+] WASM init failed, using JS fallbacks:", e);
+  }
+
+  const childText = document.childNodes[1]?.textContent;
   hasSEQTAText =
-    document.childNodes[1].textContent?.includes(
+    typeof childText === "string" &&
-      "Copyright (c) SEQTA Software",
+    (isBetterseqtaWasmReady()
-    ) ?? false;
+      ? childTextHasSeqtaCopyright(childText)
-  init();
+      : childTextLooksLikeSeqtaCopyright(childText));
+
+  await init();
 }
 
 async function init() {
-  if (
+  const titleOk = isBetterseqtaWasmReady()
-    hasSEQTAText &&
+    ? titleIsSeqtaLearnOrEngage(document.title)
-    (document.title.includes("SEQTA Learn") ||
+    : titleLooksLikeSeqtaLearnOrEngage(document.title);
-      document.title.includes("SEQTA Engage")) &&
+
-    !IsSEQTAPage
+  if (hasSEQTAText && titleOk && !IsSEQTAPage) {
-  ) {
     IsSEQTAPage = true;
     console.info("[BetterSEQTA+] Verified SEQTA Page");
 
@@ -107,7 +153,7 @@ async function init() {
       plugins.Monofile();
 
       if (settingsState.onoff) {
-        await plugins.initializePlugins();
+        scheduleDeferredPluginInitialization();
       }
 
       if (settingsState.devMode) {

src/background.ts

@@ -9,21 +9,6 @@ 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) {
@@ -44,7 +29,7 @@ type MessageSender = { (response?: unknown): void };
 
 function handleFetchThemes(request: any, sendResponse: MessageSender): boolean {
   const { token } = request;
-  const apiUrl = `${apiBase()}/api/themes?type=betterseqta&limit=100&nocache=${Date.now()}`;
+  const apiUrl = `https://betterseqta.org/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}`;
@@ -72,7 +57,7 @@ function handleFetchThemeDetails(request: any, sendResponse: MessageSender): boo
   }
   const headers: Record<string, string> = {};
   if (token) headers["Authorization"] = `Bearer ${token}`;
-  fetch(`${apiBase()}/api/themes/${themeId}`, { cache: "no-store", headers })
+  fetch(`https://betterseqta.org/api/themes/${themeId}`, { cache: "no-store", headers })
     .then((r) => r.json())
     .then(sendResponse)
     .catch((err) => {
@@ -298,7 +283,7 @@ function handleCloudFavorite(request: any, sendResponse: MessageSender): boolean
     return false;
   }
   const isFavorite = action === "favorite";
-  fetch(`${apiBase()}/api/themes/${themeId}/favorite`, {
+  fetch(`https://betterseqta.org/api/themes/${themeId}/favorite`, {
     method: isFavorite ? "POST" : "DELETE",
     headers: { Authorization: `Bearer ${token}` },
   })
@@ -325,19 +310,8 @@ 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) {
@@ -495,7 +469,6 @@ function getDefaultValues(): SettingsState {
     adaptiveThemeColour: false,
     adaptiveThemeGradient: false,
     adaptiveThemeColourTransition: true,
-    themeOfTheMonthDisabled: false,
     autoCloudSettingsSync: true,
   };
 }

src/css/injected.scss

@@ -3726,150 +3726,6 @@ div.day-empty {
   color: var(--text-primary);
 }
 
-.themeOfTheMonthCard {
-  position: fixed;
-  right: max(18px, env(safe-area-inset-right));
-  bottom: max(18px, env(safe-area-inset-bottom));
-  z-index: 48;
-  width: min(360px, calc(100vw - 36px));
-  overflow: visible;
-  border: 1px solid color-mix(in srgb, var(--text-primary) 12%, transparent);
-  border-radius: 20px;
-  background: var(--background-primary);
-  color: var(--text-primary);
-  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.35);
-  animation: themeOfTheMonthCardIn 0.24s ease-out;
-}
-.themeOfTheMonthCard::before {
-  content: "";
-  position: absolute;
-  inset: 0;
-  z-index: -1;
-  overflow: hidden;
-  border-radius: inherit;
-  background: inherit;
-}
-.themeOfTheMonthCardClosing {
-  pointer-events: none;
-  animation: themeOfTheMonthCardOut 0.18s ease-in forwards;
-}
-.themeOfTheMonthCardClose {
-  position: absolute !important;
-  top: 4px !important;
-  right: 4px !important;
-  z-index: 2;
-  width: 32px;
-  height: 32px;
-  border: 1px solid rgba(255, 255, 255, 0.22);
-  border-radius: 16px !important;
-  background: rgba(0, 0, 0, 0.42);
-  color: white;
-  cursor: pointer;
-  font-size: 1.35rem;
-  line-height: 1;
-}
-.themeOfTheMonthCardImage {
-  display: block;
-  width: 100%;
-  height: 150px;
-  margin: 0;
-  border-radius: 20px 20px 0 0;
-  object-fit: cover;
-}
-.themeOfTheMonthCardBody {
-  padding: 14px 16px 16px;
-}
-.themeOfTheMonthCardEyebrow {
-  margin: 0 0 6px;
-  font-size: 0.72rem;
-  font-weight: 700;
-  letter-spacing: 0.08em;
-  text-transform: uppercase;
-  color: color-mix(in srgb, var(--better-pri, #6366f1) 82%, var(--text-primary) 18%);
-}
-.themeOfTheMonthCard h2 {
-  margin: 0;
-  font-size: 1.2rem;
-  line-height: 1.2;
-}
-.themeOfTheMonthCardDescription {
-  display: -webkit-box;
-  margin: 8px 0 14px;
-  overflow: hidden;
-  -webkit-box-orient: vertical;
-  -webkit-line-clamp: 3;
-  font-size: 0.92rem;
-  line-height: 1.45;
-  color: color-mix(in srgb, var(--text-primary) 78%, transparent);
-}
-.themeOfTheMonthCardActions {
-  display: flex;
-  flex-wrap: wrap;
-  justify-content: flex-end;
-  gap: 8px;
-}
-.themeOfTheMonthCardPrimary,
-.themeOfTheMonthCardSecondary {
-  appearance: none;
-  border: none;
-  cursor: pointer;
-  border-radius: 9999px;
-  padding: 0.58rem 0.9rem;
-  font-size: 0.86rem;
-  font-weight: 700;
-  transition: transform 0.15s ease, filter 0.15s ease, background 0.15s ease;
-}
-.themeOfTheMonthCardPrimary {
-  background: var(--better-pri, #6366f1);
-  color: white;
-}
-.themeOfTheMonthCardSecondary {
-  background: color-mix(in srgb, var(--text-primary) 10%, transparent);
-  color: var(--text-primary);
-}
-.themeOfTheMonthCardPrimary:hover,
-.themeOfTheMonthCardSecondary:hover {
-  filter: brightness(1.08);
-  transform: translateY(-1px);
-}
-.themeOfTheMonthCardPrimary:active,
-.themeOfTheMonthCardSecondary:active {
-  transform: translateY(0);
-}
-@keyframes themeOfTheMonthCardIn {
-  from {
-    opacity: 0;
-    transform: translateY(18px) scale(0.98);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0) scale(1);
-  }
-}
-@keyframes themeOfTheMonthCardOut {
-  to {
-    opacity: 0;
-    transform: translateY(12px) scale(0.98);
-  }
-}
-@media (max-width: 900px) {
-  .themeOfTheMonthCard {
-    z-index: 2147483645;
-  }
-}
-
-.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;
@@ -4519,63 +4375,38 @@ h2.home-subtitle {
 
 .bsplus-toast {
   position: fixed;
-  right: max(18px, env(safe-area-inset-right));
+  bottom: 24px;
-  bottom: max(18px, env(safe-area-inset-bottom));
+  right: 24px;
   z-index: 10000;
-  width: min(360px, calc(100vw - 36px));
+  display: flex;
-  padding: 14px 16px 16px;
+  align-items: flex-start;
-  border: 1px solid color-mix(in srgb, var(--text-primary) 12%, transparent);
+  gap: 12px;
-  border-radius: 20px;
+  max-width: 380px;
-  background: var(--background-primary, #fff);
+  padding: 16px 18px;
+  border-radius: 12px;
+  background: var(--background-secondary, #fff);
   color: var(--text-primary, #1a1a1a);
-  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.35);
+  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
   font-size: 0.9rem;
-  line-height: 1.45;
+  line-height: 1.5;
 }
-.bsplus-toast-eyebrow {
+.bsplus-toast-content p {
-  margin: 0 0 6px !important;
+  margin: 6px 0 0;
-  font-size: 0.72rem !important;
+  opacity: 0.8;
-  font-weight: 700;
+  font-size: 0.85rem;
-  letter-spacing: 0.08em;
-  text-transform: uppercase;
-  color: color-mix(in srgb, #ea580c 82%, var(--text-primary) 18%);
-  opacity: 1 !important;
-}
-.dark .bsplus-toast-eyebrow {
-  color: color-mix(in srgb, #fb923c 82%, var(--text-primary) 18%);
-}
-.bsplus-toast-content strong {
-  display: block;
-  padding-right: 34px;
-  font-size: 1.2rem;
-  line-height: 1.2;
-}
-.bsplus-toast-content p:not(.bsplus-toast-eyebrow) {
-  display: -webkit-box;
-  margin: 8px 0 0;
-  overflow: hidden;
-  -webkit-box-orient: vertical;
-  -webkit-line-clamp: 3;
-  color: color-mix(in srgb, var(--text-primary) 78%, transparent);
-  font-size: 0.92rem;
-  line-height: 1.45;
 }
 .bsplus-toast-close {
-  position: absolute !important;
+  flex-shrink: 0;
-  top: 4px !important;
+  background: none;
-  right: 4px !important;
+  border: none;
-  z-index: 2;
+  color: var(--text-primary, #1a1a1a);
-  width: 32px;
+  font-size: 1.3rem;
-  height: 32px;
-  border: 1px solid rgba(255, 255, 255, 0.22);
-  border-radius: 16px !important;
-  background: rgba(0, 0, 0, 0.42);
-  color: white;
   cursor: pointer;
-  font-size: 1.35rem;
+  padding: 0 2px;
   line-height: 1;
-  transition: filter 0.15s ease;
+  opacity: 0.5;
+  transition: opacity 0.15s;
 }
 .bsplus-toast-close:hover {
-  filter: brightness(1.08);
+  opacity: 1;
 }

src/interface/pages/settings/general.svelte

@@ -15,34 +15,8 @@
   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"
@@ -509,22 +483,6 @@
           />
         </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>
@@ -534,31 +492,6 @@
           <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

@@ -18,7 +18,6 @@
   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);
@@ -123,39 +122,13 @@
     }
   };
 
-  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/manifests/manifest.json

@@ -21,7 +21,7 @@
     "service_worker": "background.ts"
   },
   "content_security_policy": {
-    "extension_pages": "script-src 'self'; object-src 'self'; connect-src 'self' http: https: https://betterseqta.org https://accounts.betterseqta.org https://raw.githubusercontent.com https://newsapi.org"
+    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'; connect-src 'self' http: https: https://betterseqta.org https://accounts.betterseqta.org https://raw.githubusercontent.com https://newsapi.org"
   },
   "content_scripts": [
     {
@@ -33,6 +33,7 @@
   "web_accessible_resources": [
     {
       "resources": [
+        "assets/*",
         "resources/icons/*",
         "resources/update-image.webp",
         "resources/pdfjs/pdf.worker.min.mjs",

src/plugins/built-in/assessmentsAverage/index.ts

@@ -7,11 +7,11 @@ import {
 import { type Plugin } from "@/plugins/core/types";
 import stringToHTML from "@/seqta/utils/stringToHTML";
 import { waitForElm } from "@/seqta/utils/waitForElm";
+import ReactFiber from "@/seqta/utils/ReactFiber.ts";
 import {
   clearStuck,
   getClassByPattern,
   initStorage,
-  injectWeightingsTab,
   letterToNumber,
   parseAssessments,
   processAssessments,
@@ -20,7 +20,6 @@ import {
 interface weightingsStorage {
   weightings: Record<string, string>;
   assessments: Record<string, string>;
-  weightingOverrides: Record<string, string>;
 }
 
 const settings = defineSettings({
@@ -38,8 +37,6 @@ class AssessmentsAveragePluginClass extends BasePlugin<typeof settings> {
 
 const instance = new AssessmentsAveragePluginClass();
 
-let overrideListenerController: AbortController | null = null;
-
 const assessmentsAveragePlugin: Plugin<typeof settings, weightingsStorage> = {
   id: "assessments-average",
   name: "Assessment Averages",
@@ -61,56 +58,17 @@ const assessmentsAveragePlugin: Plugin<typeof settings, weightingsStorage> = {
       );
 
       await parseAssessments(api);
-      await renderSubjectAverage(api);
-      overrideListenerController?.abort();
-      overrideListenerController = new AbortController();
-      document.addEventListener(
-        "betterseqta:overrideChanged",
-        () => renderSubjectAverage(api),
-        { signal: overrideListenerController.signal },
-      );
-      const wrapper = document.querySelector(".assessmentsWrapper");
-      if (wrapper) {
-        const observer = new MutationObserver(() => {
-          applySubjectColourToOverallResult();
-        });
-        observer.observe(wrapper, { childList: true, subtree: true });
-        setTimeout(() => observer.disconnect(), 10000);
-      }
-    });
-    api.seqta.onMount("[class*='SelectedAssessment__']", () => {
-      injectWeightingsTab(api);
-    });
-  },
-};
-
-let renderInFlight = false;
-async function renderSubjectAverage(api: any) {
-  if (renderInFlight) return;
-  renderInFlight = true;
-
-  try {
-    const assessmentsList = document.querySelector(
-      "#main > .assessmentsWrapper .assessments [class*='AssessmentList__items___']",
-    );
-    if (!assessmentsList) return;
-
-    // Remove existing subject average before re-rendering
-    Array.from(
-      assessmentsList.querySelectorAll(`[class*='AssessmentItem__title___']`),
-    )
-      .find((el) => el.textContent === "Subject Average")
-      ?.closest("[class*='AssessmentItem__AssessmentItem___']")
-      ?.remove();
 
       const sampleAssessmentItem = document.querySelector(
         "[class*='AssessmentItem__AssessmentItem___']",
       );
       if (!sampleAssessmentItem) return;
+
       const assessmentItemClass =
         Array.from(sampleAssessmentItem.classList).find((c) =>
           c.startsWith("AssessmentItem__AssessmentItem___"),
         ) || "";
+
       const metaContainerClass = getClassByPattern(
         sampleAssessmentItem,
         "AssessmentItem__metaContainer___",
@@ -128,25 +86,11 @@ async function renderSubjectAverage(api: any) {
         "AssessmentItem__title___",
       );
 
-    const assessmentItems = Array.from(
-      assessmentsList.querySelectorAll(
-        `[class*='AssessmentItem__AssessmentItem___']`,
-      ),
-    ).filter(
-      (item) =>
-        !item
-          .querySelector(`[class*='AssessmentItem__title___']`)
-          ?.textContent?.includes("Subject Average"),
-    );
-
-    const { weightedTotal, totalWeight, hasInaccurateWeighting, count } =
-      await processAssessments(api, assessmentItems);
-    if (!count || totalWeight === 0) return;
-
       const thermoscoreElement = document.querySelector(
         "[class*='Thermoscore__Thermoscore___']",
       );
       if (!thermoscoreElement) return;
+
       const thermoscoreClass =
         Array.from(thermoscoreElement.classList).find((c) =>
           c.startsWith("Thermoscore__Thermoscore___"),
@@ -160,6 +104,33 @@ async function renderSubjectAverage(api: any) {
         "Thermoscore__text___",
       );
 
+      const assessmentsList = document.querySelector(
+        "#main > .assessmentsWrapper .assessments [class*='AssessmentList__items___']",
+      );
+      if (!assessmentsList) return;
+
+      const state = await ReactFiber.find(
+        "[class*='AssessmentList__items___']",
+      ).getState();
+      const marks = state["marks"];
+      if (!marks || !marks.length) return;
+
+      const assessmentItems = Array.from(
+        assessmentsList.querySelectorAll(
+          `[class*='AssessmentItem__AssessmentItem___']`,
+        ),
+      ).filter(
+        (item) =>
+          !item
+            .querySelector(`[class*='AssessmentItem__title___']`)
+            ?.textContent?.includes("Subject Average"),
+      );
+
+      const { weightedTotal, totalWeight, hasInaccurateWeighting, count } =
+        await processAssessments(api, assessmentItems);
+
+      if (!count || totalWeight === 0) return;
+
       const avg = weightedTotal / totalWeight;
       const rounded = Math.ceil(avg / 5) * 5;
       const numberToLetter = Object.entries(letterToNumber).reduce(
@@ -169,8 +140,17 @@ async function renderSubjectAverage(api: any) {
         },
         {} as Record<number, string>,
       );
+
       const letterAvg = numberToLetter[rounded] ?? "N/A";
-    const display = api.settings.lettergrade ? letterAvg : `${avg.toFixed(2)}%`;
+      const display = api.settings.lettergrade
+        ? letterAvg
+        : `${avg.toFixed(2)}%`;
+
+      const existing = assessmentsList.querySelector(
+        `[class*='AssessmentItem__title___']`,
+      );
+      if (existing?.textContent === "Subject Average") return;
+
       let warningHTML = "";
       if (hasInaccurateWeighting) {
         warningHTML = /* html */ `
@@ -179,6 +159,7 @@ async function renderSubjectAverage(api: any) {
           </div>
         `;
       }
+
       assessmentsList.insertBefore(
         stringToHTML(/* html */ `
         <div class="${assessmentItemClass}">
@@ -199,11 +180,21 @@ async function renderSubjectAverage(api: any) {
       `).firstChild!,
         assessmentsList.firstChild,
       );
+
       applySubjectColourToOverallResult();
-  } finally {
+
-    renderInFlight = false;
+      const observer = new MutationObserver(() => {
-  }
+        applySubjectColourToOverallResult();
+      });
+      const wrapper = document.querySelector(".assessmentsWrapper");
+      if (wrapper) {
+        observer.observe(wrapper, { childList: true, subtree: true });
+        setTimeout(() => observer.disconnect(), 10000);
       }
+    });
+  },
+};
+
 function applySubjectColourToOverallResult() {
   const selectedAssessmentItem = document.querySelector(
     "[class*='AssessmentItem__AssessmentItem___'][class*='selected___']",

src/plugins/built-in/assessmentsAverage/utils.ts

@@ -5,9 +5,57 @@ import {
   getPdfjsPageContextUrls,
 } from "@/lib/pdfjsExtension.ts";
 import * as pdfjs from "pdfjs-dist";
+import {
+  escapeJsForInlineScript,
+  escapeJsSingleQuotedString,
+  extractWeightFromPdfText,
+  isBetterseqtaWasmReady,
+  isFirefoxUserAgent,
+  parseGradeToPercent,
+} from "@/wasm/init";
 
 ensurePdfjsWorker();
 
+function escJsSingleQuoted(s: string): string {
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return escapeJsSingleQuotedString(s);
+    } catch {
+      /* fall through */
+    }
+  }
+  return s.replace(/\\/g, "\\\\").replace(/'/g, "\\'");
+}
+
+function escJsInlineUrl(s: string): string {
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return escapeJsForInlineScript(s);
+    } catch {
+      /* fall through */
+    }
+  }
+  return s.replace(/\\/g, "\\\\").replace(/'/g, "\\'").replace(/"/g, '\\"');
+}
+
+function detectFirefox(): boolean {
+  if (typeof navigator === "undefined") return false;
+  const ua = navigator.userAgent;
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return isFirefoxUserAgent(ua);
+    } catch {
+      /* fall through */
+    }
+  }
+  const u = ua.toLowerCase();
+  return (
+    u.indexOf("firefox") > -1 &&
+    !u.includes("seamonkey") &&
+    !u.includes("waterfox")
+  );
+}
+
 export async function initStorage(api: any) {
   await api.storage.loaded;
 
@@ -17,9 +65,6 @@ export async function initStorage(api: any) {
   if (!api.storage.assessments) {
     api.storage.assessments = {};
   }
-  if (!api.storage.weightingOverrides) {
-    api.storage.weightingOverrides = {};
-  }
 }
 
 export function clearStuck(api: any) {
@@ -66,7 +111,7 @@ export const letterToNumber: Record<string, number> = {
   F: 0,
 };
 
-function parseGrade(text: string): number {
+function parseGradeTs(text: string): number {
   const str = text.trim().toUpperCase();
   if (str.includes("/")) {
     const [raw, max] = str.split("/").map((n) => parseFloat(n));
@@ -78,104 +123,78 @@ function parseGrade(text: string): number {
   return letterToNumber[str] ?? 0;
 }
 
+function parseGrade(text: string): number {
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return parseGradeToPercent(text);
+    } catch {
+      /* fall through */
+    }
+  }
+  return parseGradeTs(text);
+}
+
 function createWeightLabel(
   assessmentItem: Element,
   weighting: string | undefined,
 ) {
-  let statsContainer = assessmentItem.querySelector(
+  const statsContainer = assessmentItem.querySelector(
-    `[class*='AssessmentItem__stats___'],  .betterseqta-stats-container`,
+    `[class*='AssessmentItem__stats___']`,
-  ) as HTMLElement | null;
+  ) as HTMLElement;
 
-  if (!statsContainer) {
+  if (
-    const statsClass = getClassByPattern(document, "AssessmentItem__stats___");
+    !statsContainer ||
-    statsContainer = document.createElement("div");
+    statsContainer.querySelector(".betterseqta-weight-label")
-    statsContainer.className = statsClass;
+  )
-    statsContainer.classList.add("betterseqta-stats-container");
-    const thermoscore = assessmentItem.querySelector(`[class*='Thermoscore__Thermoscore___']`);
-    if (thermoscore) {
-      thermoscore.insertAdjacentElement("afterend", statsContainer);
-    } else {
-      assessmentItem.appendChild(statsContainer);
-    }
-  }
-
-  const hasNativeLabel = !!statsContainer.querySelector(
-    `[class*='Label__Label___']:not(.betterseqta-weight-label)`,
-  );
-  statsContainer.style.justifyContent = hasNativeLabel
-    ? "space-between"
-    : "flex-end";
-
-  const displayText =
-    weighting && weighting !== "processing" && weighting !== "N/A"
-      ? `${Number(weighting) % 1 === 0 ? Number(weighting) : weighting}%`
-      : "N/A";
-
-  const existingLabel = statsContainer.querySelector(
-    ".betterseqta-weight-label",
-  ) as HTMLElement | null;
-
-  if (existingLabel) {
-    const textNodes = Array.from(existingLabel.childNodes).filter(
-      (node) => node.nodeType === Node.TEXT_NODE,
-    );
-    if (textNodes.length) textNodes[0].textContent = displayText;
     return;
-  }
 
-  statsContainer.style.display = "flex";
+  const label = statsContainer.querySelector(
-  statsContainer.style.alignItems = "center";
-  statsContainer.style.width = "100%";
-
-  // Try to clone an existing label from the stats container first,
-  // fall back to building from scratch if none exists
-  const existingNativeLabel = statsContainer.querySelector(
     `[class*='Label__Label___']`,
-  ) as HTMLElement | null;
+  ) as HTMLElement;
 
-  const weightLabel = existingNativeLabel
+  if (!label) return;
-    ? (existingNativeLabel.cloneNode(true) as HTMLElement)
-    : (() => {
-      const labelClass = getClassByPattern(document, "Label__Label___");
-      const innerTextClass = getClassByPattern(document, "Label__innerText___");
-      const el = document.createElement("label");
-      el.className = labelClass;
-      el.innerHTML = `<div class="${innerTextClass}">Weight</div>`;
-      return el;
-    })();
 
+  const weightLabel = label.cloneNode(true) as HTMLElement;
   weightLabel.classList.add("betterseqta-weight-label");
-  weightLabel.style.flex = "none";
-  weightLabel.style.width = "fit-content";
 
-  const innerTextDiv = weightLabel.querySelector(`[class*='Label__innerText___']`);
+  const innerTextDiv = weightLabel.querySelector(
+    `[class*='Label__innerText___']`,
+  );
   if (innerTextDiv) innerTextDiv.textContent = "Weight";
 
   const textNodes = Array.from(weightLabel.childNodes).filter(
     (node) => node.nodeType === Node.TEXT_NODE,
   );
+
   if (textNodes.length) {
-    textNodes[0].textContent = displayText;
+    textNodes[0].textContent =
-  } else {
+      weighting && weighting !== "processing"
-    weightLabel.appendChild(document.createTextNode(displayText));
+        ? `${Number(weighting) % 1 === 0 ? Number(weighting) : weighting}%`
+        : "N/A";
   }
 
+  // Stack weight under Max/native stats — absolute right:0 overlapped the max column (#414).
+  statsContainer.style.display = "flex";
+  statsContainer.style.flexDirection = "column";
+  statsContainer.style.alignItems = "flex-end";
+  statsContainer.style.gap = "2px";
+  statsContainer.style.justifyContent = "center";
+
+  weightLabel.style.position = "relative";
+  weightLabel.style.inset = "unset";
+  weightLabel.style.transform = "none";
+
   statsContainer.appendChild(weightLabel);
 }
 
-export const isFirefox =
-  navigator.userAgent.toLowerCase().indexOf("firefox") > -1 &&
-  !navigator.userAgent.toLowerCase().includes("seamonkey") &&
-  !navigator.userAgent.toLowerCase().includes("waterfox");
-
 async function fetchPDFAsArrayBuffer(url: string): Promise<ArrayBuffer> {
   const isBlobUrl = url.startsWith("blob:");
 
-  if (isBlobUrl || isFirefox) {
+  if (isBlobUrl || detectFirefox()) {
     return new Promise((resolve, reject) => {
       const script = document.createElement("script");
       const requestId = `pdf-fetch-${Date.now()}-${Math.random()}`;
-      const escapedUrl = url.replace(/'/g, "\\'");
+      const escapedUrl = escJsSingleQuoted(url);
 
       script.textContent = `
         (function() {
@@ -262,11 +281,8 @@ async function fetchPDFAsArrayBuffer(url: string): Promise<ArrayBuffer> {
 
 export async function extractPDFText(url: string): Promise<string> {
   try {
-    if (isFirefox) {
+    if (detectFirefox()) {
-      const { lib: pdfLibUrl, worker: pdfWorkerUrl } =
+      const { lib: pdfLibUrl, worker: pdfWorkerUrl } = getPdfjsPageContextUrls();
-        getPdfjsPageContextUrls();
-      const escJsSingleQuoted = (s: string) =>
-        s.replace(/\\/g, "\\\\").replace(/'/g, "\\'");
       const pdfLibInj = escJsSingleQuoted(pdfLibUrl);
       const pdfWorkerInj = escJsSingleQuoted(pdfWorkerUrl);
 
@@ -274,10 +290,7 @@ export async function extractPDFText(url: string): Promise<string> {
         const script = document.createElement("script");
         const requestId = `pdf-extract-${Date.now()}-${Math.random()}`;
 
-        const escapedUrl = url
+        const escapedUrl = escJsInlineUrl(url);
-          .replace(/\\/g, "\\\\")
-          .replace(/'/g, "\\'")
-          .replace(/"/g, '\\"');
 
         script.textContent = `
           (function() {
@@ -524,7 +537,7 @@ async function handleWeightings(mark: any, api: any) {
       text = await extractPDFText(pdfUrl);
     } catch (error: any) {
       if (
-        isFirefox &&
+        detectFirefox() &&
         (error?.message?.includes("blob") ||
           error?.message?.includes("Security") ||
           error?.message?.includes("CSP"))
@@ -536,11 +549,22 @@ async function handleWeightings(mark: any, api: any) {
       }
     }
 
+    let weight: string | undefined;
+    if (isBetterseqtaWasmReady()) {
+      try {
+        weight = extractWeightFromPdfText(text);
+      } catch {
+        weight = undefined;
+      }
+    }
+    if (weight === undefined) {
       const match = text.match(/weight:\s*(\d+\.?\d*)/i);
+      weight = match ? match[1] : undefined;
+    }
 
     api.storage.weightings = {
       ...api.storage.weightings,
-      [assessmentID]: match ? match[1] : "N/A",
+      [assessmentID]: weight ?? "N/A",
     };
   } catch (error: any) {
     api.storage.weightings = {
@@ -555,11 +579,7 @@ export async function parseAssessments(api: any) {
     "[class*='AssessmentList__items___']",
   ).getState();
 
-  const marks = [
+  const marks = state["marks"];
-    ...(state["marks"] ?? []),
-    ...(state["upcoming"] ?? []),
-    ...(state["pending"] ?? []),
-  ];
   if (!marks) return;
 
   await Promise.all(marks.map((mark: any) => handleWeightings(mark, api)));
@@ -572,6 +592,15 @@ export async function processAssessments(api: any, assessmentItems: Element[]) {
   let count = 0;
 
   for (const assessmentItem of assessmentItems) {
+    const gradeElement = assessmentItem.querySelector(
+      `[class*='Thermoscore__text___']`,
+    );
+
+    if (!gradeElement) continue;
+
+    const grade = parseGrade(gradeElement.textContent || "");
+    if (grade <= 0) continue;
+
     const titleEl = assessmentItem.querySelector(
       `[class*='AssessmentItem__title___']`,
     );
@@ -581,23 +610,12 @@ export async function processAssessments(api: any, assessmentItems: Element[]) {
     if (!title) continue;
 
     const assessmentID = api.storage.assessments?.[title];
-    const autoWeighting = assessmentID
+    const weighting = assessmentID
       ? api.storage.weightings?.[assessmentID]
       : undefined;
-    const override = assessmentID
-      ? api.storage.weightingOverrides?.[assessmentID]
-      : undefined;
-    const weighting = override ?? autoWeighting;
 
     createWeightLabel(assessmentItem, weighting);
 
-    const gradeElement = assessmentItem.querySelector(
-      `[class*='Thermoscore__text___']`,
-    );
-    if (!gradeElement) continue;
-    const grade = parseGrade(gradeElement.textContent || "");
-    if (grade <= 0) continue;
-
     if (
       weighting === null ||
       weighting === undefined ||
@@ -605,7 +623,8 @@ export async function processAssessments(api: any, assessmentItems: Element[]) {
       weighting === "processing"
     ) {
       hasInaccurateWeighting = true;
-      continue
+      weightedTotal += grade;
+      totalWeight += 1;
     } else {
       const weight = parseFloat(weighting);
 
@@ -628,271 +647,3 @@ export async function processAssessments(api: any, assessmentItems: Element[]) {
     count,
   };
 }
-
-function resolveTabSetClasses(): Record<string, string> {
-  const patterns = [
-    "TabSet__tabsheet___",
-    "TabSet__hidden___",
-    "TabSet__selected___",
-    "TabSet__disappearToLeft___",
-    "TabSet__disappearToRight___",
-    "TabSet__appearFromRight___",
-    "TabSet__appearFromLeft___",
-  ];
-
-  const resolved: Record<string, string> = {};
-
-  // First pass: scan live DOM elements (fast, covers currently-applied classes)
-  const allClasses = Array.from(
-    document.querySelectorAll('[class*="TabSet__"]'),
-  ).flatMap((el) => Array.from(el.classList));
-
-  for (const pattern of patterns) {
-    const found = allClasses.find((c) => c.startsWith(pattern));
-    if (found) resolved[pattern] = found;
-  }
-
-  // Second pass: scan stylesheets for any classes not yet in the DOM
-  // (e.g. animation classes that haven't been applied yet)
-  const missing = patterns.filter((p) => !resolved[p]);
-  if (missing.length > 0) {
-    try {
-      for (const sheet of Array.from(document.styleSheets)) {
-        if (missing.every((p) => resolved[p])) break;
-        try {
-          for (const rule of Array.from(sheet.cssRules ?? [])) {
-            if (!(rule instanceof CSSStyleRule)) continue;
-            const selectorClasses =
-              rule.selectorText.match(/\.([\w-]+)/g) ?? [];
-            for (const pattern of missing) {
-              if (!resolved[pattern]) {
-                const match = selectorClasses.find((c) =>
-                  c.slice(1).startsWith(pattern),
-                );
-                if (match) resolved[pattern] = match.slice(1);
-              }
-            }
-          }
-        } catch {
-          // Cross-origin stylesheet
-        }
-      }
-    } catch {}
-  }
-
-  // Fallback: use the base pattern as-is so the function doesn't crash,
-  // though styles won't apply if the hash is truly unknown.
-  for (const pattern of patterns) {
-    if (!resolved[pattern]) resolved[pattern] = pattern;
-  }
-
-  return resolved;
-}
-
-function buildWeightingsTabContent(api: any, sheet: HTMLElement) {
-  const titleEl = document.querySelector(
-    "[class*='AssessmentItem__AssessmentItem___'][class*='selected___'] [class*='AssessmentItem__title___']",
-  );
-  const title = titleEl?.textContent?.trim();
-  const assessmentID = title ? api.storage.assessments?.[title] : undefined;
-
-  const rawWeight = assessmentID
-    ? api.storage.weightings?.[assessmentID]
-    : undefined;
-
-  const weightingUnavailable = rawWeight === "N/A";
-
-  const autoWeight =
-    rawWeight && rawWeight !== "processing" && rawWeight !== "N/A"
-      ? rawWeight
-      : undefined;
-
-  const override = assessmentID
-    ? api.storage.weightingOverrides?.[assessmentID]
-    : undefined;
-
-  const statusNote = !assessmentID
-    ? ""
-    : rawWeight === "processing"
-      ? "Weighting is still being detected."
-      : weightingUnavailable
-        ? "No weighting was found in the marksheet. Set one manually."
-        : "Overrides the auto-detected value.";
-
-  sheet.innerHTML = `
-    <style>
-      #betterseqta-weight-override::placeholder {
-        opacity: 0.4;
-      }
-    </style>
-    <div style="padding:16px;max-width:360px">
-      <h2 style="margin:0 0 4px;font-size:15px;font-weight:600">Weighting Override</h2>
-      <p style="margin:0 0 16px;font-size:12px;opacity:0.6">
-        Set the weighting for this assessment.
-        ${statusNote}
-      </p>
-      <div style="display:flex;align-items:center;gap:12px;margin-bottom:12px">
-        <label style="font-size:13px;opacity:0.7;flex-shrink:0">Auto-detected</label>
-        <span style="font-size:13px;opacity:${autoWeight != null ? "1" : "0.4"}">${autoWeight != null ? `${autoWeight}%` : "none"}</span>
-      </div>
-      <div style="display:flex;align-items:center;gap:12px">
-        <label for="betterseqta-weight-override" style="font-size:13px;opacity:0.7;flex-shrink:0">Override %</label>
-        <input
-          id="betterseqta-weight-override"
-          type="number"
-          min="0"
-          step="5"
-          placeholder="${autoWeight ?? ""}"
-          value="${override ?? ""}"
-          ${!assessmentID ? "disabled" : ""}
-          style="
-            width:90px;
-            padding:5px 8px;
-            border-radius:6px;
-            border:1px solid rgba(128,128,128,0.3);
-            background:rgba(128,128,128,0.08);
-            color:inherit;
-            font-size:13px;
-            outline:none;
-          "
-        />
-      </div>
-      <div style="margin-top:10px;min-height:18px">
-        <span class="betterseqta-save-status" style="font-size:12px;opacity:0.5"></span>
-      </div>
-      ${!assessmentID ? `<p style="font-size:12px;color:rgba(255,80,80,0.8);margin-top:8px">Assessment not yet indexed — try refreshing.</p>` : ""}
-    </div>
-  `;
-
-  if (!assessmentID) return;
-
-  const input = sheet.querySelector(
-    "#betterseqta-weight-override",
-  ) as HTMLInputElement;
-  const statusEl = sheet.querySelector(
-    ".betterseqta-save-status",
-  ) as HTMLElement;
-
-  const save = () => {
-    const raw = input.value.trim();
-    if (raw === "") {
-      const { [assessmentID]: _, ...rest } = api.storage.weightingOverrides;
-      api.storage.weightingOverrides = rest;
-    } else {
-      const val = parseFloat(raw);
-      if (isNaN(val) || val < 0) {
-        input.style.borderColor = "rgba(255,80,80,0.6)";
-        statusEl.textContent = "Invalid. Must be 0 or greater";
-        statusEl.style.color = "rgba(255,80,80,0.8)";
-        return;
-      }
-      input.style.borderColor = "rgba(128,128,128,0.3)";
-      api.storage.weightingOverrides = {
-        ...api.storage.weightingOverrides,
-        [assessmentID]: String(val),
-      };
-    }
-    statusEl.textContent = "Saved";
-    statusEl.style.color = "";
-    setTimeout(() => (statusEl.textContent = ""), 2000);
-    document.dispatchEvent(new CustomEvent("betterseqta:overrideChanged"));
-  };
-
-  input.addEventListener("blur", save);
-  input.addEventListener("keydown", (e) => {
-    if (e.key === "Enter") {
-      input.blur();
-      save();
-    }
-  });
-  input.addEventListener("input", () => {
-    input.style.borderColor = "rgba(128,128,128,0.3)";
-    if (statusEl.textContent === "Invalid. Must be 0 or greater.")
-      statusEl.textContent = "";
-  });
-}
-
-export function injectWeightingsTab(api: any) {
-  const tabList = document.querySelector(
-    '[class*="TabSet__tabs___"]',
-  ) as HTMLElement;
-  const container = document.querySelector(
-    '[class*="TabSet__tabContainer___"]',
-  ) as HTMLElement;
-  if (!tabList || !container) return;
-  if (tabList.querySelector(".betterseqta-weightings-tab")) return;
-
-  const cls = resolveTabSetClasses();
-
-  const prefix = (tabList.querySelector("li") as HTMLElement).id.replace(
-    /-tab-\d+$/,
-    "",
-  );
-  const newIndex = tabList.querySelectorAll("li").length;
-
-  const newTab = document.createElement("li");
-  newTab.id = `${prefix}-tab-${newIndex}`;
-  newTab.className = "";
-  newTab.setAttribute("aria-selected", "false");
-  newTab.setAttribute("aria-controls", `${prefix}-tabsheet-${newIndex}`);
-  newTab.classList.add("betterseqta-weightings-tab");
-  newTab.textContent = "Weightings";
-  tabList.appendChild(newTab);
-
-  const newSheet = document.createElement("div");
-  newSheet.id = `${prefix}-tabsheet-${newIndex}`;
-  newSheet.setAttribute("aria-labelledby", `${prefix}-tab-${newIndex}`);
-  newSheet.className = [
-    cls["TabSet__tabsheet___"],
-    cls["TabSet__hidden___"],
-    cls["TabSet__disappearToRight___"],
-  ].join(" ");
-  container.appendChild(newSheet);
-
-  let populated = false;
-  newTab.addEventListener("click", () => {
-    if (!populated) {
-      buildWeightingsTabContent(api, newSheet);
-      populated = true;
-    }
-  });
-
-  const allTabs = Array.from(tabList.querySelectorAll("li"));
-  const allSheets = Array.from(
-    container.querySelectorAll('[class*="tabsheet"]'),
-  );
-
-  allTabs.forEach((tab, i) => {
-    tab.addEventListener("click", () => {
-      const currentIndex = allTabs.findIndex((t) =>
-        t.className.includes("TabSet__selected___"),
-      );
-      if (i === currentIndex) return;
-      const goingRight = i > currentIndex;
-
-      allTabs.forEach((t) => {
-        t.className = "";
-        t.setAttribute("aria-selected", "false");
-      });
-
-      allSheets[currentIndex].className = [
-        cls["TabSet__tabsheet___"],
-        cls["TabSet__hidden___"],
-        goingRight
-          ? cls["TabSet__disappearToLeft___"]
-          : cls["TabSet__disappearToRight___"],
-      ].join(" ");
-
-      allSheets[i].className = [
-        cls["TabSet__tabsheet___"],
-        cls["TabSet__selected___"],
-        goingRight
-          ? cls["TabSet__appearFromRight___"]
-          : cls["TabSet__appearFromLeft___"],
-      ].join(" ");
-
-      tab.className = cls["TabSet__selected___"];
-      tab.setAttribute("aria-selected", "true");
-    });
-  });
-}

src/plugins/built-in/assessmentsOverview/api.ts

@@ -28,9 +28,17 @@ async function fetchJSON(url: string, body: any) {
 
 async function loadSubjects() {
   const res = await fetchJSON("/seqta/student/load/subjects?", {});
-  return res.payload
+  const activeGroup = res.payload.find((s: any) => s.active === 1);
-    .filter((s: any) => s.active === 1)
+  const activeYear = activeGroup?.year;
+  const allSubjects = res.payload
+    .filter((s: any) => s.year === activeYear)
     .flatMap((s: any) => s.subjects);
+  const seen = new Set<string>();
+  return allSubjects.filter((s: Subject) => {
+    if (seen.has(s.code)) return false;
+    seen.add(s.code);
+    return true;
+  });
 }
 
 async function loadPrefs(student: number) {

src/plugins/built-in/globalSearch/src/utils/browserDetection.ts

@@ -1,4 +1,8 @@
 import browser from "webextension-polyfill";
+import {
+  isBetterseqtaWasmReady,
+  isFirefoxUserAgent,
+} from "@/wasm/init";
 
 /**
  * Detects if the current browser is Firefox
@@ -11,6 +15,13 @@ export function isFirefox(): boolean {
     }
     // Fallback: check user agent
     if (typeof navigator !== "undefined") {
+      if (isBetterseqtaWasmReady()) {
+        try {
+          return isFirefoxUserAgent(navigator.userAgent);
+        } catch {
+          /* fall through */
+        }
+      }
       return navigator.userAgent.toLowerCase().includes("firefox");
     }
     return false;

src/plugins/built-in/messageFolders/index.ts

@@ -22,7 +22,6 @@ interface Folder {
   id: string;
   name: string;
   color: string;
-  emoji: string;
 }
 
 interface MessageFoldersStorage {
@@ -35,33 +34,12 @@ const FOLDER_COLORS = [
   "#8b5cf6", "#ec4899", "#14b8a6", "#f97316",
 ];
 
-const FOLDER_HEROICONS = [
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="22 12 16 12 14 15 10 15 8 12 2 12"/><path d="M5.45 5.11L2 12v6a2 2 0 0 0 2 2h16a2 2 0 0 0 2-2v-6l-3.45-6.89A2 2 0 0 0 16.76 4H7.24a2 2 0 0 0-1.79 1.11z"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M20.84 4.61a5.5 5.5 0 0 0-7.78 0L12 5.67l-1.06-1.06a5.5 5.5 0 0 0-7.78 7.78l1.06 1.06L12 21.23l7.78-7.78 1.06-1.06a5.5 5.5 0 0 0 0-7.78z"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M8.5 14.5A2.5 2.5 0 0 0 11 12c0-1.38-.5-2-1-3-1.072-2.143-.224-4.054 2-6 .5 2.5 2 4.9 4 6.5 2 1.6 3 3.5 3 5.5a7 7 0 1 1-14 0c0-1.153.433-2.294 1-3a2.5 2.5 0 0 0 2.5 2.5z"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 18h6"/><path d="M10 22h4"/><path d="M15.09 14c.18-.98.65-1.74 1.41-2.5A4.65 4.65 0 0 0 18 8 6 6 0 0 0 6 8c0 1 .23 2.23 1.5 3.5A4.61 4.61 0 0 1 8.91 14"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/><polyline points="14 2 14 8 20 8"/><line x1="16" y1="13" x2="8" y2="13"/><line x1="16" y1="17" x2="8" y2="17"/><polyline points="10 9 9 9 8 9"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><circle cx="12" cy="12" r="6"/><circle cx="12" cy="12" r="2"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="4" width="18" height="18" rx="2" ry="2"/><line x1="16" y1="2" x2="16" y2="6"/><line x1="8" y1="2" x2="8" y2="6"/><line x1="3" y1="10" x2="21" y2="10"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/><polyline points="14 2 14 8 20 8"/><line x1="16" y1="13" x2="8" y2="13"/><line x1="16" y1="17" x2="8" y2="17"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2"/><circle cx="9" cy="7" r="4"/><path d="M23 21v-2a4 4 0 0 0-3-3.87"/><path d="M16 3.13a4 4 0 0 1 0 7.75"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="7" width="20" height="14" rx="2" ry="2"/><path d="M16 21V5a2 2 0 0 0-2-2h-4a2 2 0 0 0-2 2v16"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"/><polyline points="9 22 9 12 15 12 15 22"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"/><path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"/></svg>`,
-  `<svg style="width:16px;height:16px" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 18V5l12-2v13"/><circle cx="6" cy="18" r="3"/><circle cx="18" cy="16" r="3"/></svg>`,
-];
-
 const FOLDER_ICON_SVG = `<svg style="width:24px;height:24px;flex-shrink:0" viewBox="0 0 24 24"><path fill="#888" d="M10 4H4c-1.1 0-2 .9-2 2v12c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V8c0-1.1-.9-2-2-2h-8l-2-2z"/></svg>`;
 const PLUS_SVG = `<svg style="width:14px;height:14px;flex-shrink:0" viewBox="0 0 24 24"><path fill="#888" d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>`;
 const CHECK_SVG_WHITE = `<svg style="width:14px;height:14px;flex-shrink:0" viewBox="0 0 24 24"><path fill="#fff" d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z"/></svg>`;
 const CLOSE_SVG = `<svg style="width:14px;height:14px;flex-shrink:0" viewBox="0 0 24 24"><path fill="#888" d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z"/></svg>`;
 const EDIT_SVG = `<svg style="width:12px;height:12px;flex-shrink:0" viewBox="0 0 24 24"><path fill="#888" d="M3 17.25V21h3.75L17.81 9.94l-3.75-3.75L3 17.25zM20.71 7.04a1 1 0 0 0 0-1.41l-2.34-2.34a1 1 0 0 0-1.41 0l-1.83 1.83 3.75 3.75 1.83-1.83z"/></svg>`;
 const TRASH_SVG = `<svg style="width:12px;height:12px;flex-shrink:0" viewBox="0 0 24 24"><path fill="#888" d="M6 19c0 1.1.9 2 2 2h8c1.1 0 2-.9 2-2V7H6v12zM19 4h-3.5l-1-1h-5l-1 1H5v2h14V4z"/></svg>`;
-const CHEVRON_SVG = `<svg style="width:12px;height:12px;flex-shrink:0;transition:transform .2s" viewBox="0 0 24 24"><path fill="#888" d="M7.41 8.59L12 13.17l4.59-4.58L18 10l-6 6-6-6 1.41-1.41z"/></svg>`;
-const DRAG_SVG = `<svg style="width:14px;height:14px;flex-shrink:0;cursor:grab" viewBox="0 0 24 24"><path fill="#888" d="M6.5 12.5a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3zm5.5 0a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3zm5.5 0a1.5 1.5 0 1 1 0-3 1.5 1.5 0 0 1 0 3z"/></svg>`;
 
 function generateId(): string {
   return Date.now().toString(36) + Math.random().toString(36).slice(2, 7);
@@ -71,7 +49,7 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
   id: "messageFolders",
   name: "Message Folders",
   description: "Organize direct messages into custom folders",
-  version: "2.0.0",
+  version: "1.0.0",
   settings: messageFoldersSettings,
   disableToggle: true,
   defaultEnabled: true,
@@ -92,9 +70,10 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
     let actionsObserver: MutationObserver | null = null;
     let openDropdown: HTMLElement | null = null;
     let dropdownCloseHandler: ((e: MouseEvent) => void) | null = null;
-    let foldedSection: HTMLElement | null = null;
     const unregisters: Array<{ unregister: () => void }> = [];
 
+    // ── Storage accessors ──
+
     const getFolders = (): Folder[] => api.storage.folders ?? [];
     const getAssignments = (): Record<string, string[]> => api.storage.messageAssignments ?? {};
 
@@ -115,18 +94,6 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       return ids;
     };
 
-    const assignMessageToFolder = (messageId: string, folderId: string, add: boolean) => {
-      const assignments = getAssignments();
-      if (!assignments[folderId]) assignments[folderId] = [];
-      const idx = assignments[folderId].indexOf(messageId);
-      if (add && idx < 0) {
-        assignments[folderId].push(messageId);
-      } else if (!add && idx >= 0) {
-        assignments[folderId].splice(idx, 1);
-      }
-      saveAssignments(assignments);
-    };
-
     const toggleMessageInFolder = (messageId: string, folderId: string) => {
       const assignments = getAssignments();
       if (!assignments[folderId]) assignments[folderId] = [];
@@ -162,28 +129,16 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       return api.settings.showTagsInAllMessages || activeFolderId !== null;
     };
 
-    const getSelectedMessageId = (): string | null => {
+    // ── Confirm modal ──
-      const selectedMsg = document.querySelector("[class*='MessageList__selected___']");
-      return selectedMsg?.getAttribute("data-message") ?? null;
-    };
 
-    const getMessageIdFromEvent = (target: HTMLElement): string | null => {
+    const showConfirmModal = (
-      const li = target.closest("li[data-message]");
+      title: string,
-      return li?.getAttribute("data-message") ?? null;
+      message: string,
-    };
+      onConfirm: () => void,
-
+    ) => {
-    const getAllVisibleMessageIds = (): string[] => {
-      const ids: string[] = [];
-      document.querySelectorAll("[class*='MessageList__MessageList___'] ol > li[data-message]").forEach((li) => {
-        const id = li.getAttribute("data-message");
-        if (id) ids.push(id);
-      });
-      return ids;
-    };
-
-    const showConfirmModal = (title: string, message: string, onConfirm: () => void) => {
       const overlay = document.createElement("div");
       overlay.className = "bsplus-modal-overlay";
+
       const modal = document.createElement("div");
       modal.className = "bsplus-modal";
       modal.innerHTML = `
@@ -195,13 +150,16 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
         </div>
       `;
       overlay.appendChild(modal);
+
       const remove = () => {
         overlay.remove();
         document.removeEventListener("keydown", onKey);
       };
+
       const onKey = (e: KeyboardEvent) => {
         if (e.key === "Escape") remove();
       };
+
       overlay.addEventListener("click", (e) => {
         if (e.target === overlay) remove();
       });
@@ -210,42 +168,36 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
         onConfirm();
         remove();
       });
+
       document.body.appendChild(overlay);
       document.addEventListener("keydown", onKey);
     };
 
+    // ── Sidebar folder UI ──
+
     const renderSidebarFolders = () => {
       const sidebar = document.querySelector("[class*='Viewer__sidebar___']");
       if (!sidebar) return;
+
       const ol = sidebar.querySelector("ol");
       if (!ol) return;
 
-      let section = ol.querySelector(".bsplus-folders-section") as HTMLElement;
+      let section = ol.querySelector(".bsplus-folders-section");
       if (!section) {
         section = document.createElement("div");
         section.className = "bsplus-folders-section";
         ol.appendChild(section);
       }
 
-      foldedSection = section;
       const folders = getFolders();
+      const existingInput = section.querySelector(".bsplus-folder-input");
+      const existingColors = section.querySelector(".bsplus-folder-colors");
+
       section.innerHTML = "";
 
+      // Header
       const header = document.createElement("div");
       header.className = "bsplus-folders-header";
-      header.dataset.folded = "false";
-
-      const collapseBtn = document.createElement("button");
-      collapseBtn.className = "bsplus-folders-collapse";
-      collapseBtn.innerHTML = CHEVRON_SVG;
-      collapseBtn.title = "Collapse";
-      collapseBtn.addEventListener("click", (e) => {
-        e.stopPropagation();
-        const isFolded = collapseBtn.classList.toggle("bsplus-folded");
-        section.classList.toggle("bsplus-section-folded", isFolded);
-        collapseBtn.title = isFolded ? "Expand" : "Collapse";
-      });
-      header.appendChild(collapseBtn);
 
       const label = document.createElement("span");
       label.textContent = "Folders";
@@ -262,8 +214,9 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       header.appendChild(addBtn);
       section.appendChild(header);
 
+      // "All Messages" item
       const allItem = document.createElement("div");
-      allItem.className = `bsplus-folder-item bsplus-all-msgs${activeFolderId === null ? " bsplus-folder-active" : ""}`;
+      allItem.className = `bsplus-folder-item${activeFolderId === null ? " bsplus-folder-active" : ""}`;
       allItem.innerHTML = `
         <svg width="14" height="14" viewBox="0 0 24 24" style="fill: currentcolor; opacity: 0.5; flex-shrink: 0;"><path d="M20 4H4c-1.1 0-2 .9-2 2v12c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2zm0 4l-8 5-8-5V6l8 5 8-5v2z"/></svg>
         <span class="bsplus-folder-name">All Messages</span>
@@ -273,34 +226,20 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
         applyFolderFilter();
         applyBadges();
         renderSidebarFolders();
-        setTimeout(() => {
-          applyFolderFilter();
-          applyBadges();
-        }, 100);
       });
       section.appendChild(allItem);
 
+      // Folder items
       for (const folder of folders) {
         const item = document.createElement("div");
         item.className = `bsplus-folder-item${activeFolderId === folder.id ? " bsplus-folder-active" : ""}`;
         item.dataset.folderId = folder.id;
-        item.draggable = true;
-
-        const dragHandle = document.createElement("div");
-        dragHandle.className = "bsplus-folder-drag";
-        dragHandle.innerHTML = DRAG_SVG;
-        item.appendChild(dragHandle);
 
         const dot = document.createElement("div");
         dot.className = "bsplus-folder-dot";
         dot.style.background = folder.color;
         item.appendChild(dot);
 
-        const iconSpan = document.createElement("span");
-        iconSpan.className = "bsplus-folder-icon";
-        iconSpan.innerHTML = folder.emoji || FOLDER_HEROICONS[0];
-        item.appendChild(iconSpan);
-
         const name = document.createElement("span");
         name.className = "bsplus-folder-name";
         name.textContent = folder.name;
@@ -325,7 +264,10 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
         deleteBtn.innerHTML = TRASH_SVG;
         deleteBtn.addEventListener("click", (e) => {
           e.stopPropagation();
-          showConfirmModal("Delete folder", `Remove "${folder.name}"? Messages won't be deleted.`, () => {
+          showConfirmModal(
+            "Delete folder",
+            `Remove "${folder.name}"? Messages won't be deleted.`,
+            () => {
               const folders = getFolders().filter((f) => f.id !== folder.id);
               saveFolders(folders);
               const assignments = getAssignments();
@@ -335,7 +277,8 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
               applyFolderFilter();
               applyBadges();
               renderSidebarFolders();
-          });
+            },
+          );
         });
         actions.appendChild(deleteBtn);
 
@@ -352,89 +295,15 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
           applyFolderFilter();
           applyBadges();
           renderSidebarFolders();
-          setTimeout(() => {
-            applyFolderFilter();
-            applyBadges();
-          }, 100);
-        });
-
-        item.addEventListener("dragstart", (e) => {
-          e.dataTransfer?.setData("text/plain", `reorder:${folder.id}`);
-          item.classList.add("bsplus-dragging");
-        });
-        item.addEventListener("dragend", () => {
-          item.classList.remove("bsplus-dragging");
-          document.querySelectorAll(".bsplus-folder-item").forEach((el) => el.classList.remove("bsplus-drag-over"));
-        });
-        item.addEventListener("dragover", (e) => {
-          e.preventDefault();
-          const data = e.dataTransfer?.getData("text/plain") || "";
-          if (data.startsWith("reorder:") && !data.includes(folder.id)) {
-            item.classList.add("bsplus-drag-over");
-          }
-        });
-        item.addEventListener("dragleave", () => {
-          item.classList.remove("bsplus-drag-over");
-        });
-        item.addEventListener("drop", (e) => {
-          e.preventDefault();
-          item.classList.remove("bsplus-drag-over");
-          const data = e.dataTransfer?.getData("text/plain") || "";
-          if (data.startsWith("reorder:")) {
-            const draggedId = data.replace("reorder:", "");
-            const folders = getFolders();
-            const draggedIdx = folders.findIndex((f) => f.id === draggedId);
-            const targetIdx = folders.findIndex((f) => f.id === folder.id);
-            if (draggedIdx >= 0 && targetIdx >= 0 && draggedIdx !== targetIdx) {
-              const [removed] = folders.splice(draggedIdx, 1);
-              folders.splice(targetIdx, 0, removed);
-              saveFolders(folders);
-              renderSidebarFolders();
-            }
-          }
         });
 
         section.appendChild(item);
       }
 
-      section.addEventListener("dragover", (e) => {
+      // Restore input if it was open
-        e.preventDefault();
+      if (existingInput || existingColors) {
-      });
+        // Don't restore – let user re-trigger
-      section.addEventListener("drop", (e) => {
-        e.preventDefault();
-        const data = e.dataTransfer?.getData("text/plain") || "";
-        if (data.startsWith("msg:")) {
-          const messageId = data.replace("msg:", "");
-          const folderId = (e.target as HTMLElement).closest("[data-folder-id]")?.getAttribute("data-folder-id");
-          if (messageId && folderId) {
-            assignMessageToFolder(messageId, folderId, true);
-            applyBadges();
-            applyFolderFilter();
-            renderSidebarFolders();
       }
-        }
-      });
-
-      attachDragListeners();
-    };
-
-    const attachDragListeners = () => {
-      document.querySelectorAll("[class*='MessageList__MessageList___'] ol > li[data-message]").forEach((li) => {
-        if (li.getAttribute("data-bsplus-drag") === "true") return;
-        li.setAttribute("data-bsplus-drag", "true");
-        li.draggable = true;
-        li.addEventListener("dragstart", (e) => {
-          const id = li.getAttribute("data-message");
-          if (id) {
-            e.dataTransfer?.setData("text/plain", `msg:${id}`);
-            li.classList.add("bsplus-msg-dragging");
-          }
-        });
-        li.addEventListener("dragend", () => {
-          li.classList.remove("bsplus-msg-dragging");
-          document.querySelectorAll(".bsplus-folder-item").forEach((el) => el.classList.remove("bsplus-drag-over"));
-        });
-      });
     };
 
     const showNewFolderInput = (container: Element, editFolder?: Folder) => {
@@ -443,34 +312,16 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       container.querySelector(".bsplus-folder-colors")?.remove();
 
       let selectedColor = editFolder?.color ?? FOLDER_COLORS[Math.floor(Math.random() * FOLDER_COLORS.length)];
-      let selectedIcon = editFolder?.emoji ?? FOLDER_HEROICONS[Math.floor(Math.random() * FOLDER_HEROICONS.length)];
 
       const row = document.createElement("div");
       row.className = "bsplus-folder-input";
 
       const input = document.createElement("input");
       input.type = "text";
-      input.placeholder = editFolder ? "Rename folder\u2026" : "Folder name\u2026";
+      input.placeholder = editFolder ? "Rename folder…" : "Folder name…";
       input.value = editFolder?.name ?? "";
       input.maxLength = 30;
 
-      const iconBtn = document.createElement("button");
-      iconBtn.className = "bsplus-folder-icon-btn";
-      iconBtn.title = "Pick icon";
-      iconBtn.innerHTML = selectedIcon;
-      iconBtn.addEventListener("click", (e) => {
-        e.stopPropagation();
-        const picker = container.querySelector(".bsplus-icon-picker") as HTMLElement | null;
-        if (picker) {
-          picker.remove();
-          return;
-        }
-        showIconPicker(container, (iconSvg) => {
-          selectedIcon = iconSvg;
-          iconBtn.innerHTML = iconSvg;
-        });
-      });
-
       const confirmBtn = document.createElement("button");
       confirmBtn.className = "bsplus-folder-input-confirm";
       confirmBtn.innerHTML = CHECK_SVG_WHITE;
@@ -479,11 +330,11 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       cancelBtn.className = "bsplus-folder-input-cancel";
       cancelBtn.innerHTML = CLOSE_SVG;
 
-      row.appendChild(iconBtn);
       row.appendChild(input);
       row.appendChild(confirmBtn);
       row.appendChild(cancelBtn);
 
+      // Color picker
       const colorRow = document.createElement("div");
       colorRow.className = "bsplus-folder-colors";
       for (const color of FOLDER_COLORS) {
@@ -503,13 +354,14 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       const confirm = () => {
         const name = input.value.trim();
         if (!name) return;
+
         if (editFolder) {
           const folders = getFolders().map((f) =>
-            f.id === editFolder.id ? { ...f, name, color: selectedColor, emoji: selectedIcon } : f,
+            f.id === editFolder.id ? { ...f, name, color: selectedColor } : f,
           );
           saveFolders(folders);
         } else {
-          const folder: Folder = { id: generateId(), name, color: selectedColor, emoji: selectedIcon };
+          const folder: Folder = { id: generateId(), name, color: selectedColor };
           saveFolders([...getFolders(), folder]);
         }
         applyBadges();
@@ -534,38 +386,23 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       requestAnimationFrame(() => input.focus());
     };
 
-    const showIconPicker = (container: Element, onSelect: (iconSvg: string) => void) => {
-      const existing = container.querySelector(".bsplus-icon-picker");
-      if (existing) existing.remove();
-
-      const picker = document.createElement("div");
-      picker.className = "bsplus-icon-picker";
-      for (const icon of FOLDER_HEROICONS) {
-        const btn = document.createElement("button");
-        btn.className = "bsplus-icon-opt";
-        btn.innerHTML = icon;
-        btn.addEventListener("click", (e) => {
-          e.stopPropagation();
-          onSelect(icon);
-          picker.remove();
-        });
-        picker.appendChild(btn);
-      }
-      container.appendChild(picker);
-    };
-
     const showEditFolderInput = (container: Element, folder: Folder) => {
       showNewFolderInput(container, folder);
     };
 
+    // ── Intercept native sidebar clicks to clear folder filter ──
+
     const attachNativeSidebarListeners = () => {
       const sidebar = document.querySelector("[class*='Viewer__sidebar___']");
       if (!sidebar) return;
+
       const ol = sidebar.querySelector("ol");
       if (!ol) return;
+
       ol.addEventListener("click", (e) => {
         const target = e.target as HTMLElement;
         if (target.closest(".bsplus-folders-section")) return;
+
         const li = target.closest("li");
         if (li && ol.contains(li)) {
           if (activeFolderId !== null) {
@@ -578,22 +415,47 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       });
     };
 
-    const closeDropdown = () => {
+    // ── "Add to folder" button in message action bar ──
-      if (openDropdown) {
+
-        openDropdown.remove();
+    const injectFolderButton = (actionsBar: Element) => {
-        openDropdown = null;
+      if (actionsBar.querySelector(".bsplus-folder-btn")) return;
-      }
+
-      if (dropdownCloseHandler) {
+      const wrapper = document.createElement("div");
-        document.removeEventListener("click", dropdownCloseHandler, true);
+      wrapper.className = "bsplus-folder-btn";
-        dropdownCloseHandler = null;
+      wrapper.style.position = "relative";
+      wrapper.style.display = "inline-block";
+
+      const btn = document.createElement("button");
+      const btnClasses = actionsBar.querySelector("button")?.className ?? "";
+      btn.className = btnClasses;
+      btn.title = "Add to folder";
+      btn.innerHTML = FOLDER_ICON_SVG;
+
+      btn.addEventListener("click", (e) => {
+        e.preventDefault();
+        e.stopPropagation();
+        closeDropdown();
+
+        const selectedMsg = document.querySelector("[class*='MessageList__selected___']");
+        const messageId = selectedMsg?.getAttribute("data-message");
+        if (!messageId) return;
+
+        showFolderDropdown(wrapper, messageId);
+      });
+
+      wrapper.appendChild(btn);
+
+      const moreMenu = actionsBar.querySelector("[class*='MenuButton__Menu___']");
+      if (moreMenu) {
+        actionsBar.insertBefore(wrapper, moreMenu);
+      } else {
+        actionsBar.appendChild(wrapper);
       }
     };
 
     const showFolderDropdown = (anchor: HTMLElement, messageId: string) => {
-      closeDropdown();
       const dropdown = document.createElement("div");
       dropdown.className = "bsplus-folder-dropdown";
-      dropdown.dataset.msgId = messageId;
 
       const folders = getFolders();
       const currentFolderIds = getMessageFolderIds(messageId);
@@ -608,7 +470,6 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
           const isChecked = currentFolderIds.includes(folder.id);
           const item = document.createElement("button");
           item.className = `bsplus-folder-dropdown-item${isChecked ? " bsplus-checked" : ""}`;
-          item.dataset.folderId = folder.id;
 
           const check = document.createElement("div");
           check.className = "bsplus-folder-dropdown-check";
@@ -620,26 +481,22 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
           dot.className = "bsplus-folder-dot";
           dot.style.background = folder.color;
 
-          const iconSpan = document.createElement("span");
-          iconSpan.className = "bsplus-folder-icon";
-          iconSpan.innerHTML = folder.emoji || FOLDER_HEROICONS[0];
-
           const name = document.createElement("span");
           name.textContent = folder.name;
 
           item.appendChild(check);
           item.appendChild(dot);
-          item.appendChild(iconSpan);
           item.appendChild(name);
 
           item.addEventListener("click", (e) => {
             e.stopPropagation();
-            e.preventDefault();
             toggleMessageInFolder(messageId, folder.id);
+
             const nowChecked = getMessageFolderIds(messageId).includes(folder.id);
             item.classList.toggle("bsplus-checked", nowChecked);
             check.style.borderColor = nowChecked ? folder.color : "";
             check.style.background = nowChecked ? folder.color : "";
+
             applyBadges();
             applyFolderFilter();
             renderSidebarFolders();
@@ -662,105 +519,22 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       }, 0);
     };
 
-    const injectFolderButton = (actionsBar: Element) => {
+    const closeDropdown = () => {
-      if (actionsBar.querySelector(".bsplus-folder-btn")) return;
+      if (openDropdown) {
-      const wrapper = document.createElement("div");
+        openDropdown.remove();
-      wrapper.className = "bsplus-folder-btn";
+        openDropdown = null;
-      wrapper.style.position = "relative";
+      }
-      wrapper.style.display = "inline-block";
+      if (dropdownCloseHandler) {
-      const btn = document.createElement("button");
+        document.removeEventListener("click", dropdownCloseHandler, true);
-      const btnClasses = actionsBar.querySelector("button")?.className ?? "";
+        dropdownCloseHandler = null;
-      btn.className = btnClasses;
-      btn.title = "Add to folder";
-      btn.innerHTML = FOLDER_ICON_SVG;
-      btn.addEventListener("click", (e) => {
-        e.preventDefault();
-        e.stopPropagation();
-        const selectedMsg = document.querySelector("[class*='MessageList__selected___']");
-        const messageId = selectedMsg?.getAttribute("data-message");
-        if (!messageId) return;
-        showFolderDropdown(wrapper, messageId);
-      });
-      wrapper.appendChild(btn);
-      const moreMenu = actionsBar.querySelector("[class*='MenuButton__Menu___']");
-      if (moreMenu) {
-        actionsBar.insertBefore(wrapper, moreMenu);
-      } else {
-        actionsBar.appendChild(wrapper);
       }
     };
 
-    const showContextMenu = (e: MouseEvent, messageId: string) => {
+    // ── Message badges ──
-      e.preventDefault();
-      e.stopPropagation();
-      closeDropdown();
-      const existing = document.querySelector(".bsplus-context-menu");
-      if (existing) existing.remove();
-
-      const menu = document.createElement("div");
-      menu.className = "bsplus-context-menu";
-      menu.style.left = `${e.clientX}px`;
-      menu.style.top = `${e.clientY}px`;
-
-      const title = document.createElement("div");
-      title.className = "bsplus-context-title";
-      title.textContent = "Add to folder";
-      menu.appendChild(title);
-
-      const folders = getFolders();
-      const currentFolderIds = getMessageFolderIds(messageId);
-
-      if (folders.length === 0) {
-        const empty = document.createElement("div");
-        empty.className = "bsplus-context-empty";
-        empty.textContent = "No folders";
-        menu.appendChild(empty);
-      } else {
-        for (const folder of folders) {
-          const isChecked = currentFolderIds.includes(folder.id);
-          const item = document.createElement("button");
-          item.className = `bsplus-context-item${isChecked ? " bsplus-context-checked" : ""}`;
-          const dot = document.createElement("div");
-          dot.className = "bsplus-folder-dot";
-          dot.style.background = folder.color;
-          const iconSpan = document.createElement("span");
-          iconSpan.className = "bsplus-folder-icon";
-          iconSpan.innerHTML = folder.emoji || FOLDER_HEROICONS[0];
-          const name = document.createElement("span");
-          name.textContent = folder.name;
-          item.appendChild(dot);
-          item.appendChild(iconSpan);
-          item.appendChild(name);
-          if (isChecked) {
-            const check = document.createElement("span");
-            check.className = "bsplus-context-checkmark";
-            check.textContent = "\u2713";
-            item.appendChild(check);
-          }
-          item.addEventListener("click", (e) => {
-            e.stopPropagation();
-            toggleMessageInFolder(messageId, folder.id);
-            applyBadges();
-            applyFolderFilter();
-            renderSidebarFolders();
-            menu.remove();
-          });
-          menu.appendChild(item);
-        }
-      }
-
-      document.body.appendChild(menu);
-      const closeMenu = (ev: MouseEvent) => {
-        if (!menu.contains(ev.target as Node)) {
-          menu.remove();
-          document.removeEventListener("click", closeMenu);
-        }
-      };
-      setTimeout(() => document.addEventListener("click", closeMenu), 0);
-    };
 
     const applyBadges = () => {
       const messageItems = document.querySelectorAll("[class*='MessageList__MessageList___'] ol > li[data-message]");
+
       if (!shouldShowBadgesInList()) {
         for (const li of messageItems) {
           const subject = li.querySelector("[class*='MessageList__subject___']");
@@ -772,20 +546,26 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
         }
         return;
       }
+
       const folders = getFolders();
       const assignments = getAssignments();
+
       for (const li of messageItems) {
         const msgId = li.getAttribute("data-message");
         if (!msgId) continue;
+
         let badgeContainer = li.querySelector(".bsplus-msg-badges") as HTMLElement | null;
-        const folderIds: string[] = [];
+
+        const folderIds = [];
         for (const [fId, mIds] of Object.entries(assignments)) {
           if (mIds.includes(msgId)) folderIds.push(fId);
         }
+
         if (folderIds.length === 0) {
           badgeContainer?.remove();
           continue;
         }
+
         if (!badgeContainer) {
           badgeContainer = document.createElement("div");
           badgeContainer.className = "bsplus-msg-badges";
@@ -803,6 +583,7 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
             li.appendChild(badgeContainer);
           }
         }
+
         badgeContainer.innerHTML = "";
         for (const fId of folderIds) {
           const folder = folders.find((f) => f.id === fId);
@@ -810,7 +591,7 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
           const badge = document.createElement("span");
           badge.className = "bsplus-msg-badge";
           badge.style.background = folder.color;
-          badge.innerHTML = `${folder.emoji ? `<span style="display:inline-flex;vertical-align:middle;margin-right:2px">${folder.emoji}</span>` : ""}${folder.name}`;
+          badge.textContent = folder.name;
           badge.title = `Filter by "${folder.name}"`;
           badge.addEventListener("click", (e) => {
             e.stopPropagation();
@@ -824,9 +605,12 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       }
     };
 
+    // ── Folder filtering ──
+
     const applyFolderFilter = () => {
       const messageItems = document.querySelectorAll("[class*='MessageList__MessageList___'] ol > li[data-message]");
       const moreBtn = document.querySelector("[class*='MessageList__MessageList___'] ol > button");
+
       if (activeFolderId === null) {
         if (api.settings.hideFolderedMessagesInAll) {
           for (const li of messageItems) {
@@ -845,7 +629,9 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
         if (moreBtn) (moreBtn as HTMLElement).classList.remove("bsplus-folder-hidden");
         return;
       }
+
       const folderMsgIds = getAssignments()[activeFolderId] ?? [];
+
       for (const li of messageItems) {
         const msgId = li.getAttribute("data-message");
         if (msgId && folderMsgIds.includes(msgId)) {
@@ -857,35 +643,25 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       if (moreBtn) (moreBtn as HTMLElement).classList.add("bsplus-folder-hidden");
     };
 
+    // ── Observers ──
+
     const setupMessageListObserver = () => {
       const messageList = document.querySelector("[class*='MessageList__MessageList___'] ol");
       if (!messageList || messageListObserver) return;
+
       messageListObserver = new MutationObserver(() => {
         applyBadges();
         applyFolderFilter();
-        attachDragListeners();
-        attachContextMenuListeners();
       });
       messageListObserver.observe(messageList, { childList: true, subtree: false });
     };
 
-    const attachContextMenuListeners = () => {
-      document.querySelectorAll("[class*='MessageList__MessageList___'] ol > li[data-message]").forEach((li) => {
-        if (li.getAttribute("data-bsplus-ctx") === "true") return;
-        li.setAttribute("data-bsplus-ctx", "true");
-        li.addEventListener("contextmenu", (e) => {
-          const msgId = li.getAttribute("data-message");
-          if (msgId) {
-            showContextMenu(e, msgId);
-          }
-        });
-      });
-    };
-
     const setupActionsObserver = () => {
       if (actionsObserver) return;
+
       const target = document.querySelector("[class*='Viewer__Viewer___']") ?? document.querySelector("div.messages");
       if (!target) return;
+
       actionsObserver = new MutationObserver(() => {
         const actionsBar = document.querySelector("[class*='Message__actions___']");
         if (actionsBar && !actionsBar.querySelector(".bsplus-folder-btn")) {
@@ -895,19 +671,28 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       actionsObserver.observe(target, { childList: true, subtree: true });
     };
 
+    // ── Main page handler ──
+
     const handleMessagesPage = async () => {
       await waitForElm("[class*='Viewer__sidebar___'] ol", true, 50, 100);
+
       renderSidebarFolders();
       attachNativeSidebarListeners();
+
       await waitForElm("[class*='MessageList__MessageList___'] ol", true, 50, 100);
       applyBadges();
       applyFolderFilter();
       setupMessageListObserver();
+
+      // The actions bar only exists when a message is selected/open,
+      // so we observe the whole viewer for it to appear dynamically
       setupActionsObserver();
-      attachDragListeners();
+
-      attachContextMenuListeners();
+      // If a message is already selected, inject immediately
       const actionsBar = document.querySelector("[class*='Message__actions___']");
       if (actionsBar) injectFolderButton(actionsBar);
+
+      // Re-observe the sidebar for SEQTA re-renders
       const sidebar = document.querySelector("[class*='Viewer__sidebar___']");
       if (sidebar && !sidebarObserver) {
         sidebarObserver = new MutationObserver(() => {
@@ -921,8 +706,11 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       }
     };
 
+    // ── Lifecycle ──
+
     const mountUnsub = api.seqta.onMount("div.messages", handleMessagesPage);
     unregisters.push(mountUnsub);
+
     unregisters.push(
       api.settings.onChange("showTagsInAllMessages", () => {
         applyBadges();
@@ -944,7 +732,6 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
       document.querySelectorAll(".bsplus-folders-section").forEach((el) => el.remove());
       document.querySelectorAll(".bsplus-folder-btn").forEach((el) => el.remove());
       document.querySelectorAll(".bsplus-msg-badges").forEach((el) => el.remove());
-      document.querySelectorAll(".bsplus-context-menu").forEach((el) => el.remove());
       document.querySelectorAll("[class*='MessageList__subject___']").forEach((subject) => {
         if (subject.querySelector(".bsplus-subject-text")) {
           restoreSubjectPlain(subject);
@@ -954,7 +741,6 @@ const messageFoldersPlugin: Plugin<typeof messageFoldersSettings, MessageFolders
         el.classList.remove("bsplus-folder-hidden"),
       );
       document.querySelectorAll(".bsplus-modal-overlay").forEach((el) => el.remove());
-
     };
   },
 };

src/plugins/built-in/messageFolders/styles.css

@@ -3,21 +3,12 @@
   border-top: 1px solid var(--background-secondary, rgba(128, 128, 128, 0.2));
   margin-top: 4px;
   padding-top: 4px;
-  transition: opacity .2s;
-}
-
-.bsplus-folders-section.bsplus-section-folded .bsplus-folder-item,
-.bsplus-folders-section.bsplus-section-folded .bsplus-folder-input,
-.bsplus-folders-section.bsplus-section-folded .bsplus-folder-colors,
-.bsplus-folders-section.bsplus-section-folded .bsplus-emoji-picker,
-.bsplus-folders-section.bsplus-section-folded .bsplus-all-msgs {
-  display: none !important;
 }
 
 .bsplus-folders-header {
   display: flex;
   align-items: center;
-  gap: 4px;
+  justify-content: space-between;
   padding: 6px 12px 2px;
   user-select: none;
 }
@@ -29,33 +20,6 @@
   letter-spacing: 0.5px;
   color: var(--text-primary, #666);
   opacity: 0.5;
-  flex: 1;
-}
-
-.bsplus-folders-collapse {
-  display: flex !important;
-  align-items: center !important;
-  justify-content: center !important;
-  width: 18px !important;
-  height: 18px !important;
-  min-width: 0 !important;
-  border: none !important;
-  background: transparent !important;
-  opacity: 0.4;
-  cursor: pointer;
-  border-radius: 4px !important;
-  padding: 0 !important;
-  margin: 0 !important;
-  transition: all .2s;
-}
-
-.bsplus-folders-collapse:hover {
-  opacity: 0.8;
-  background: var(--background-secondary, rgba(128, 128, 128, 0.1)) !important;
-}
-
-.bsplus-folders-collapse.bsplus-folded svg {
-  transform: rotate(-90deg);
 }
 
 .bsplus-folders-add-btn {
@@ -87,21 +51,12 @@
   align-items: center;
   padding: 6px 12px;
   cursor: pointer;
-  transition: background 0.15s ease, opacity 0.2s;
+  transition: background 0.15s ease;
   position: relative;
-  gap: 6px;
+  gap: 8px;
   user-select: none;
 }
 
-.bsplus-folder-item.bsplus-dragging {
-  opacity: 0.4;
-}
-
-.bsplus-folder-item.bsplus-drag-over {
-  background: var(--better-main, #007bff22) !important;
-  border-radius: 4px;
-}
-
 .bsplus-folder-item:hover {
   background: var(--theme-offset-bg-more, rgba(128, 128, 128, 0.08));
 }
@@ -121,18 +76,6 @@
   border-radius: 0 2px 2px 0;
 }
 
-.bsplus-folder-drag {
-  display: flex;
-  align-items: center;
-  opacity: 0;
-  transition: opacity .15s;
-  margin-right: -4px;
-}
-
-.bsplus-folder-item:hover .bsplus-folder-drag {
-  opacity: 0.5;
-}
-
 .bsplus-folder-dot {
   width: 8px;
   height: 8px;
@@ -140,23 +83,6 @@
   flex-shrink: 0;
 }
 
-.bsplus-folder-icon {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  width: 16px;
-  height: 16px;
-  flex-shrink: 0;
-  color: var(--text-primary, #333);
-}
-
-.bsplus-folder-icon svg {
-  width: 16px;
-  height: 16px;
-  stroke: currentColor;
-  fill: none;
-}
-
 .bsplus-folder-name {
   font-size: 13px;
   color: var(--text-primary, #333);
@@ -171,8 +97,6 @@
   color: var(--text-primary, #999);
   opacity: 0.5;
   flex-shrink: 0;
-  min-width: 16px;
-  text-align: right;
 }
 
 .bsplus-folder-actions {
@@ -234,35 +158,6 @@
   box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
 }
 
-.bsplus-folder-icon-btn {
-  display: flex !important;
-  align-items: center !important;
-  justify-content: center !important;
-  width: 28px !important;
-  height: 28px !important;
-  min-width: 0 !important;
-  border: 1px solid var(--background-secondary, #ccc) !important;
-  border-radius: 6px !important;
-  background: var(--background-secondary, #f5f5f5) !important;
-  cursor: pointer;
-  padding: 0 !important;
-  margin: 0 !important;
-  transition: all .15s;
-  color: var(--text-primary, #333);
-}
-
-.bsplus-folder-icon-btn:hover {
-  transform: scale(1.1);
-  background: var(--theme-offset-bg-more, rgba(128, 128, 128, 0.1)) !important;
-}
-
-.bsplus-folder-icon-btn svg {
-  width: 18px;
-  height: 18px;
-  stroke: currentColor;
-  fill: none;
-}
-
 .bsplus-folder-input-confirm,
 .bsplus-folder-input-cancel {
   display: flex !important;
@@ -297,43 +192,6 @@
   background: var(--background-secondary, rgba(128, 128, 128, 0.1)) !important;
 }
 
-/* ── Icon picker ── */
-.bsplus-icon-picker {
-  display: grid;
-  grid-template-columns: repeat(4, 1fr);
-  gap: 4px;
-  padding: 4px 12px 6px;
-  max-width: 140px;
-}
-
-.bsplus-icon-opt {
-  display: flex !important;
-  align-items: center !important;
-  justify-content: center !important;
-  width: 28px !important;
-  height: 28px !important;
-  min-width: 0 !important;
-  border: none !important;
-  border-radius: 6px !important;
-  background: transparent !important;
-  cursor: pointer;
-  padding: 0 !important;
-  transition: all .15s;
-  color: var(--text-primary, #333);
-}
-
-.bsplus-icon-opt svg {
-  width: 18px;
-  height: 18px;
-  stroke: currentColor;
-  fill: none;
-}
-
-.bsplus-icon-opt:hover {
-  transform: scale(1.3);
-  background: var(--theme-offset-bg-more, rgba(128, 128, 128, 0.1)) !important;
-}
-
 /* ── Color picker row ── */
 .bsplus-folder-colors {
   display: grid;
@@ -464,113 +322,14 @@
   opacity: 0.5;
 }
 
-/* ── Context menu ── */
+/* ── Let primary column use available space instead of being clipped ── */
-.bsplus-context-menu {
-  position: fixed;
-  min-width: 160px;
-  background: var(--background-primary, #fff) !important;
-  border: 1px solid var(--background-secondary, #e0e0e0) !important;
-  border-radius: 8px;
-  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
-  z-index: 2147483646;
-  overflow: hidden;
-  animation: bsplus-dropdown-in 0.12s ease-out;
-  padding: 4px 0;
-}
-
-.bsplus-context-title {
-  padding: 6px 12px 4px;
-  font-size: 11px;
-  font-weight: 600;
-  text-transform: uppercase;
-  letter-spacing: 0.5px;
-  color: var(--text-primary, #999) !important;
-  opacity: 0.5;
-  user-select: none;
-}
-
-.bsplus-context-item:hover {
-  background: var(--theme-offset-bg-more, rgba(128, 128, 128, 0.08)) !important;
-}
-
-.bsplus-context-item span {
-  flex: 1;
-}
-
-.bsplus-context-checkmark {
-  color: var(--better-main, #007bff) !important;
-  font-weight: bold;
-  flex: 0 !important;
-}
-
-.bsplus-context-item {
-  display: flex !important;
-  align-items: center !important;
-  justify-content: flex-start !important;
-  gap: 8px;
-  padding: 7px 12px !important;
-  font-size: 13px;
-  cursor: pointer;
-  border: none !important;
-  background: transparent !important;
-  width: 100%;
-  text-align: left !important;
-  color: var(--text-primary, #333) !important;
-  transition: background .1s;
-  font-family: inherit;
-}
-
-.bsplus-context-item .bsplus-folder-icon {
-  color: var(--text-primary, #333) !important;
-  width: 16px;
-  height: 16px;
-}
-
-.bsplus-context-item .bsplus-folder-icon svg {
-  width: 16px;
-  height: 16px;
-  stroke: currentColor;
-  fill: none;
-}
-
-.bsplus-context-item:hover {
-  background: var(--theme-offset-bg-more, rgba(128, 128, 128, 0.08));
-}
-
-.bsplus-context-item span {
-  flex: 1;
-}
-
-.bsplus-context-checkmark {
-  color: var(--better-main, #007bff) !important;
-  font-weight: bold;
-  flex: 0 !important;
-}
-
-.bsplus-context-empty {
-  padding: 12px;
-  text-align: center;
-  font-size: 12px;
-  color: var(--text-primary, #999);
-  opacity: 0.5;
-}
-
-/* ── Drag feedback ── */
-.bsplus-msg-dragging {
-  opacity: 0.4;
-}
-
-[class*='MessageList__MessageList___'] ol > li[data-message] {
-  transition: opacity .15s;
-}
-
-/* ── Layout fixes ── */
 [class*='MessageList__primary___'] {
   flex: 1 1 0% !important;
   min-width: 0 !important;
   overflow: hidden !important;
 }
 
+/* ── Make subject line a flex row so badges sit inline ── */
 [class*='MessageList__subject___'] {
   display: flex !important;
   align-items: center;
@@ -579,6 +338,7 @@
   overflow: hidden !important;
 }
 
+/* ── Subject text truncates to make room for badges ── */
 .bsplus-subject-text {
   overflow: hidden;
   text-overflow: ellipsis;
@@ -587,6 +347,7 @@
   flex: 1 1 auto;
 }
 
+/* ── Shrink the secondary column to its content ── */
 [class*='MessageList__secondary___'] {
   flex: 0 0 auto !important;
   width: auto !important;
@@ -594,6 +355,7 @@
   max-width: 200px !important;
 }
 
+/* ── Constrain the flags/attachment icon column ── */
 [class*='MessageList__flags___'] {
   width: 24px !important;
   min-width: 0 !important;
@@ -629,7 +391,7 @@
   transform: scale(1.05);
 }
 
-/* ── Folder filtering ── */
+/* ── Folder filtering (hide messages not in active folder) ── */
 .bsplus-folder-hidden {
   display: none !important;
 }
@@ -727,5 +489,3 @@
   transform: translateY(-1px);
   box-shadow: 0 4px 12px rgba(229, 62, 62, 0.35);
 }
-
-

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

@@ -11,12 +11,16 @@ 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,
   setCustomThemeAdaptiveCssVariables,
 } from "@/seqta/ui/colors/customThemeAdaptiveBindings";
+import {
+  decodeBase64,
+  isBetterseqtaWasmReady,
+  stripDataUrlBase64Payload,
+} from "@/wasm/init";
 
 type ThemeContent = {
   id: string;
@@ -546,10 +550,7 @@ export class ThemeManager {
     }
   }
 
-  /** Use a getter so dev-mode session-only base URL overrides take effect immediately. */
+  private readonly THEME_API_BASE = 'https://betterseqta.org/api';
-  private get THEME_API_BASE(): string {
-    return `${getApiBase()}/api`;
-  }
   private readonly GITHUB_THEMES_BASE = 'https://raw.githubusercontent.com/BetterSEQTA/BetterSEQTA-Themes/main/store/themes';
 
   /**
@@ -1091,8 +1092,15 @@ export class ThemeManager {
   private stripBase64Prefix(base64String: string): string {
     if (!base64String) return "";
 
-    const prefixRegex = /^data:[^;]+;base64,/;
     try {
+      if (isBetterseqtaWasmReady()) {
+        try {
+          return stripDataUrlBase64Payload(base64String);
+        } catch {
+          /* fall through */
+        }
+      }
+      const prefixRegex = /^data:[^;]+;base64,/;
       return prefixRegex.test(base64String)
         ? base64String.replace(prefixRegex, "")
         : base64String;
@@ -1104,6 +1112,16 @@ export class ThemeManager {
 
   private base64ToBlob(base64: string): Blob {
     try {
+      if (isBetterseqtaWasmReady()) {
+        try {
+          const bytes = decodeBase64(base64.trim());
+          if (bytes.byteLength > 0) {
+            return new Blob([bytes], { type: "image/png" });
+          }
+        } catch {
+          /* fall through */
+        }
+      }
       const byteString = atob(base64);
       const ab = new ArrayBuffer(byteString.length);
       const ia = new Uint8Array(ab);

src/plugins/built-in/timetableEdit/index.ts

@@ -145,10 +145,8 @@ const timetableEditPlugin: Plugin<{}, TimetableStorage> = {
 
     let observer: MutationObserver | null = null;
     let quickbarObserver: MutationObserver | null = null;
-    let quickbarSyncTimer: ReturnType<typeof setTimeout> | null = null;
     let lastClickedCi: number | null = null;
     let lastClickedEntry: { roomEl: HTMLElement; teacherEl: HTMLElement; item: TimetableEntryData } | null = null;
-    let lastSyncedQuickbarCi: number | null = null;
 
     const getOverrides = (): TimetableOverrides =>
       api.storage.timetableOverrides ?? {};
@@ -188,11 +186,9 @@ const timetableEditPlugin: Plugin<{}, TimetableStorage> = {
         if (override.staff !== undefined && teacherEl) teacherEl.textContent = override.staff;
       }
 
-      const captureClick = () => {
+      const captureClick = (e: MouseEvent) => {
         lastClickedCi = ci;
         lastClickedEntry = { roomEl, teacherEl, item };
-        lastSyncedQuickbarCi = null;
-        scheduleQuickbarSync();
       };
       entry.addEventListener("click", captureClick, true);
     };
@@ -203,76 +199,6 @@ const timetableEditPlugin: Plugin<{}, TimetableStorage> = {
       });
     };
 
-    const getVisibleClassQuickbar = (): HTMLElement | null => {
-      const quickbar = document.querySelector(
-        ".timetablepage .quickbar.below.visible, .timetablepage .quickbar.above.visible, .timetablepage .quickbar.visible",
-      );
-      if (!quickbar || quickbar.getAttribute("data-type") !== "class") return null;
-      return quickbar as HTMLElement;
-    };
-
-    const applyOverridesToQuickbar = (quickbar: HTMLElement): void => {
-      if (lastClickedCi === null) return;
-      if (lastSyncedQuickbarCi === lastClickedCi) return;
-
-      const description =
-        quickbar.querySelector(".title")?.textContent?.trim() ??
-        lastClickedEntry?.item.description ??
-        "";
-      const override = getEffectiveOverride(lastClickedCi, description);
-      if (!override) {
-        lastSyncedQuickbarCi = lastClickedCi;
-        return;
-      }
-
-      const roomEl = quickbar.querySelector(".meta .room");
-      const teacherEl = quickbar.querySelector(".meta .teacher");
-      if (override.room !== undefined && !roomEl) return;
-      if (override.staff !== undefined && !teacherEl) return;
-
-      if (override.room !== undefined && roomEl && roomEl.textContent !== override.room) {
-        roomEl.textContent = override.room;
-      }
-      if (override.staff !== undefined && teacherEl && teacherEl.textContent !== override.staff) {
-        teacherEl.textContent = override.staff;
-      }
-
-      lastSyncedQuickbarCi = lastClickedCi;
-    };
-
-    const updateVisibleQuickbar = (room: string, staff: string): void => {
-      const quickbar = getVisibleClassQuickbar();
-      if (!quickbar) return;
-      const roomEl = quickbar.querySelector(".meta .room");
-      const teacherEl = quickbar.querySelector(".meta .teacher");
-      if (roomEl && roomEl.textContent !== room) roomEl.textContent = room;
-      if (teacherEl && teacherEl.textContent !== staff) teacherEl.textContent = staff;
-      if (lastClickedCi !== null) lastSyncedQuickbarCi = lastClickedCi;
-    };
-
-    const syncClassQuickbar = (quickbar: HTMLElement): void => {
-      applyOverridesToQuickbar(quickbar);
-      addEditButtonToQuickbar(quickbar);
-    };
-
-    const scheduleQuickbarSync = (): void => {
-      if (quickbarSyncTimer !== null) clearTimeout(quickbarSyncTimer);
-
-      let attempts = 0;
-      const trySync = (): void => {
-        const quickbar = getVisibleClassQuickbar();
-        if (quickbar && lastClickedCi !== null) {
-          syncClassQuickbar(quickbar);
-          return;
-        }
-        if (++attempts < 6) {
-          quickbarSyncTimer = setTimeout(trySync, 50);
-        }
-      };
-
-      requestAnimationFrame(trySync);
-    };
-
     const addEditButtonToQuickbar = (quickbar: HTMLElement) => {
       if (quickbar.querySelector(".timetable-edit-quickbar-btn")) return;
 
@@ -325,7 +251,6 @@ const timetableEditPlugin: Plugin<{}, TimetableStorage> = {
             }
             if (entryData.roomEl) entryData.roomEl.textContent = room;
             if (entryData.teacherEl) entryData.teacherEl.textContent = staff;
-            updateVisibleQuickbar(room, staff);
             processAllEntries();
           },
           (ci) => {
@@ -337,7 +262,6 @@ const timetableEditPlugin: Plugin<{}, TimetableStorage> = {
             api.storage.timetableOverridesBySubject = bySubject;
             if (entryData.roomEl) entryData.roomEl.textContent = item.room;
             if (entryData.teacherEl) entryData.teacherEl.textContent = item.staff;
-            updateVisibleQuickbar(item.room, item.staff);
             processAllEntries();
           },
         );
@@ -347,30 +271,34 @@ const timetableEditPlugin: Plugin<{}, TimetableStorage> = {
     };
 
     const syncQuickbarFromDOM = () => {
-      const quickbar = getVisibleClassQuickbar();
+      const quickbar = document.querySelector(
-      if (!quickbar || lastClickedCi === null || !lastClickedEntry) return;
+        ".timetablepage .quickbar.below.visible, .timetablepage .quickbar.visible",
-      syncClassQuickbar(quickbar);
+      );
+      if (quickbar && quickbar.getAttribute("data-type") === "class") {
+        const titleEl = quickbar.querySelector(".title");
+        const roomEl = quickbar.querySelector(".meta .room");
+        const teacherEl = quickbar.querySelector(".meta .teacher");
+        if (titleEl && roomEl && teacherEl && lastClickedCi !== null && lastClickedEntry) {
+          addEditButtonToQuickbar(quickbar as HTMLElement);
+        }
+      }
     };
 
     const setupQuickbarObserver = () => {
       const timetablePage = document.querySelector(".timetablepage");
       if (!timetablePage || quickbarObserver) return;
 
-      quickbarObserver = new MutationObserver((mutations) => {
+      quickbarObserver = new MutationObserver(() => {
-        const quickbarBecameVisible = mutations.some(
+        const quickbar = document.querySelector(
-          (mutation) =>
+          ".timetablepage .quickbar.below.visible, .timetablepage .quickbar.visible",
-            mutation.type === "attributes" &&
-            mutation.attributeName === "class" &&
-            (mutation.target as HTMLElement).classList.contains("quickbar") &&
-            (mutation.target as HTMLElement).classList.contains("visible"),
         );
-        if (!quickbarBecameVisible || lastClickedCi === null) return;
+        if (quickbar?.getAttribute("data-type") === "class") {
-
+          addEditButtonToQuickbar(quickbar as HTMLElement);
-        const quickbar = getVisibleClassQuickbar();
+        }
-        if (quickbar) syncClassQuickbar(quickbar);
       });
 
       quickbarObserver.observe(timetablePage, {
+        childList: true,
         subtree: true,
         attributes: true,
         attributeFilter: ["class"],
@@ -408,7 +336,6 @@ const timetableEditPlugin: Plugin<{}, TimetableStorage> = {
       unregister();
       observer?.disconnect();
       quickbarObserver?.disconnect();
-      if (quickbarSyncTimer !== null) clearTimeout(quickbarSyncTimer);
       styleEl.remove();
       document.querySelectorAll("[data-timetable-edit-processed]").forEach((el) => {
         el.removeAttribute("data-timetable-edit-processed");

src/plugins/index.ts

@@ -10,7 +10,7 @@ import assessmentsAveragePlugin from "./built-in/assessmentsAverage";
 import profilePicturePlugin from "./built-in/profilePicture";
 import assessmentsOverviewPlugin from "./built-in/assessmentsOverview";
 import backgroundMusicPlugin from "./built-in/backgroundMusic";
-import messageFoldersPlugin from "./built-in/messageFolders";
+//import messageFoldersPlugin from "./built-in/messageFolders";
 //import testPlugin from './built-in/test';
 
 // Heavy plugins (lazy-loaded only when enabled)
@@ -29,7 +29,7 @@ pluginManager.registerPlugin(timetableEditPlugin);
 pluginManager.registerPlugin(profilePicturePlugin);
 pluginManager.registerPlugin(assessmentsOverviewPlugin);
 pluginManager.registerPlugin(backgroundMusicPlugin);
-pluginManager.registerPlugin(messageFoldersPlugin);
+//pluginManager.registerPlugin(messageFoldersPlugin);
 //pluginManager.registerPlugin(testPlugin);
 
 // Register heavy plugins with lazy loading

src/plugins/monofile.ts

@@ -1,5 +1,4 @@
 // Third-party libraries
-import browser from "webextension-polyfill";
 import { animate, stagger } from "motion";
 
 // Internal utilities and functions
@@ -30,6 +29,7 @@ import {
 } from "@/seqta/utils/Loaders/LoadEngageHomePage";
 import { loadHomePage } from "@/seqta/utils/Loaders/LoadHomePage";
 import { runStartupPopupQueue } from "@/seqta/utils/Openers/StartupPopupQueue";
+import { extensionAssetUrl } from "@/seqta/utils/extensionAsset";
 
 import { updateTimetableTimes } from "@/seqta/utils/updateTimetableTimes";
 
@@ -105,11 +105,11 @@ export async function finishLoad() {
     console.error("Error during loading cleanup:", err);
   }
 
-  void runStartupPopupQueue();
+  runStartupPopupQueue();
 }
 
 export function GetCSSElement(file: string) {
-  const cssFile = browser.runtime.getURL(file);
+  const cssFile = extensionAssetUrl(file);
   const fileref = document.createElement("link");
   fileref.setAttribute("rel", "stylesheet");
   fileref.setAttribute("type", "text/css");
@@ -866,7 +866,7 @@ function InjectCustomIcons() {
   style.innerHTML = `
     @font-face {
       font-family: 'IconFamily';
-      src: url('${browser.runtime.getURL(IconFamily)}') format('woff');
+      src: url('${extensionAssetUrl(IconFamily)}') format('woff');
       font-weight: normal;
       font-style: normal;
     }`;

src/seqta/main.ts

@@ -1,8 +1,8 @@
 // Third-party libraries
-import browser from "webextension-polyfill";
 
 // Internal utilities and functions
 import { settingsState } from "@/seqta/utils/listeners/SettingsState";
+import { extensionAssetUrl } from "@/seqta/utils/extensionAsset";
 
 // UI and theme management
 import pageState from "@/pageState.js?url";
@@ -34,7 +34,12 @@ export async function main() {
 }
 
 function injectPageState() {
+  const scriptUrl = extensionAssetUrl(pageState);
+  if (!scriptUrl) {
+    console.warn("[BetterSEQTA+] Could not resolve pageState script URL.");
+    return;
+  }
   const mainScript = document.createElement("script");
-  mainScript.src = browser.runtime.getURL(pageState);
+  mainScript.src = scriptUrl;
   document.head.appendChild(mainScript);
 }

src/seqta/ui/colors/Manager.ts

@@ -1,4 +1,3 @@
-import browser from "webextension-polyfill";
 import Color from "color";
 import { GetThresholdOfColor } from "@/seqta/ui/colors/getThresholdColour";
 import { lightenAndPaleColor } from "./lightenAndPaleColor";
@@ -6,6 +5,7 @@ import ColorLuminance from "./ColorLuminance";
 import { settingsState } from "@/seqta/utils/listeners/SettingsState";
 import { getAdaptiveColour } from "@/seqta/utils/adaptiveThemeColour";
 import { getCustomThemeAdaptiveCssVariableBindings } from "@/seqta/ui/colors/customThemeAdaptiveBindings";
+import { extensionAssetUrl } from "@/seqta/utils/extensionAsset";
 
 import darkLogo from "@/resources/icons/betterseqta-light-full.png";
 import lightLogo from "@/resources/icons/betterseqta-dark-full.png";
@@ -115,11 +115,11 @@ function applyColorsWith(selectedColor: string) {
   let modeProps = {};
   modeProps = settingsState.DarkMode
     ? {
-        "--betterseqta-logo": `url(${browser.runtime.getURL(darkLogo)})`,
+        "--betterseqta-logo": `url(${extensionAssetUrl(darkLogo)})`,
       }
     : {
         "--better-pale": lightenAndPaleColor(selectedColor),
-        "--betterseqta-logo": `url(${browser.runtime.getURL(lightLogo)})`,
+        "--betterseqta-logo": `url(${extensionAssetUrl(lightLogo)})`,
       };
 
   if (settingsState.DarkMode) {

src/seqta/ui/colors/getThresholdColour.ts

@@ -1,38 +1,44 @@
 import Color from "color";
+import {
+  colorCssThresholdDistance,
+  isBetterseqtaWasmReady,
+} from "@/wasm/init";
+
 export function GetThresholdOfColor(color: any) {
   if (!color) return 0;
-  // Case-insensitive regular expression for matching RGBA colors
+  const s = typeof color === "string" ? color : String(color);
+
+  if (isBetterseqtaWasmReady()) {
+    try {
+      const v = colorCssThresholdDistance(s);
+      if (v >= 0 && Number.isFinite(v)) return v;
+    } catch {
+      /* fall through to Color */
+    }
+  }
+
   const rgbaRegex = /rgba?\(([^)]+)\)/gi;
 
-  // Check if the color string is a gradient (linear or radial)
+  if (s.includes("gradient")) {
-  if (color.includes("gradient")) {
+    const gradientThresholds = [];
-    let gradientThresholds = [];
-
-    // Find and replace all instances of RGBA in the gradient
     let match;
-    while ((match = rgbaRegex.exec(color)) !== null) {
+    while ((match = rgbaRegex.exec(s)) !== null) {
-      // Extract the individual components (r, g, b, a)
       const rgbaString = match[1];
       const [r, g, b] = rgbaString.split(",").map((str) => str.trim());
-
-      // Compute the threshold using your existing algorithm
       const threshold = Math.sqrt(
-        parseInt(r) ** 2 + parseInt(g) ** 2 + parseInt(b) ** 2,
+        parseInt(r, 10) ** 2 + parseInt(g, 10) ** 2 + parseInt(b, 10) ** 2,
       );
-
-      // Store the computed threshold
       gradientThresholds.push(threshold);
     }
-
+    if (gradientThresholds.length === 0) {
-    // Calculate the average threshold
+      return 0;
-    const averageThreshold =
+    }
+    return (
       gradientThresholds.reduce((acc, val) => acc + val, 0) /
-      gradientThresholds.length;
+      gradientThresholds.length
+    );
+  }
 
-    return averageThreshold;
+  const rgb = Color.rgb(s).object();
-  } else {
-    // Handle the color as a simple RGBA (or hex, or whatever the Color library supports)
-    const rgb = Color.rgb(color).object();
   return Math.sqrt(rgb.r ** 2 + rgb.g ** 2 + rgb.b ** 2);
 }
-}

src/seqta/utils/DevApiBase.ts

@@ -1,65 +0,0 @@
-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/Loaders/LoadEngageHomePage.ts

@@ -1,5 +1,4 @@
 import { animate } from "motion";
-import browser from "webextension-polyfill";
 import LogoLight from "@/resources/icons/betterseqta-light-icon.png";
 import { GetThresholdOfColor } from "@/seqta/ui/colors/getThresholdColour";
 import { convertTo12HourFormat } from "@/seqta/utils/convertTo12HourFormat";
@@ -17,6 +16,7 @@ import {
   toISODate,
   weekRangeContaining,
 } from "@/seqta/utils/Loaders/engageParentTimetable";
+import { extensionAssetUrl } from "@/seqta/utils/extensionAsset";
 
 export function updateEngageHomeMenuActive(isHome: boolean): void {
   const home = document.getElementById("homebutton");
@@ -128,7 +128,7 @@ function renderEngageDayLessons(): void {
   if (lessons.length === 0) {
     dayContainer.innerHTML = `
       <div class="day-empty">
-        <img src="${browser.runtime.getURL(LogoLight)}" alt="" />
+        <img src="${extensionAssetUrl(LogoLight)}" alt="" />
         <p>No lessons for this day.</p>
       </div>`;
   } else {
@@ -273,7 +273,7 @@ function processEngageNotices(response: any, labelArray: string[]): void {
     const emptyState = document.createElement("div");
     emptyState.classList.add("day-empty");
     const img = document.createElement("img");
-    img.src = browser.runtime.getURL(LogoLight);
+    img.src = extensionAssetUrl(LogoLight);
     const text = document.createElement("p");
     text.innerText = "No notices for today.";
     emptyState.append(img, text);
@@ -285,7 +285,7 @@ function processEngageNotices(response: any, labelArray: string[]): void {
     const emptyState = document.createElement("div");
     emptyState.classList.add("day-empty");
     const img = document.createElement("img");
-    img.src = browser.runtime.getURL(LogoLight);
+    img.src = extensionAssetUrl(LogoLight);
     const text = document.createElement("p");
     text.innerText = "No notices for today.";
     emptyState.append(img, text);
@@ -713,7 +713,7 @@ function showEngageTimetableError(message: string): void {
   dayContainer.classList.remove("loading");
   dayContainer.innerHTML = `
     <div class="day-empty">
-      <img src="${browser.runtime.getURL(LogoLight)}" alt="" />
+      <img src="${extensionAssetUrl(LogoLight)}" alt="" />
       <p>${message}</p>
     </div>`;
 }
@@ -724,7 +724,7 @@ function showEngageNoticesSectionError(message: string): void {
   noticeContainer.classList.remove("loading");
   noticeContainer.innerHTML = `
     <div class="day-empty">
-      <img src="${browser.runtime.getURL(LogoLight)}" alt="" />
+      <img src="${extensionAssetUrl(LogoLight)}" alt="" />
       <p>${message}</p>
     </div>`;
 }

src/seqta/utils/Loaders/LoadHomePage.ts

@@ -1,5 +1,4 @@
 import { animate, stagger } from "motion";
-import browser from "webextension-polyfill";
 import LogoLight from "@/resources/icons/betterseqta-light-icon.png";
 import assessmentsicon from "@/seqta/icons/assessmentsIcon";
 import coursesicon from "@/seqta/icons/coursesIcon";
@@ -13,6 +12,7 @@ import { CreateElement } from "@/seqta/utils/CreateEnable/CreateElement";
 import { FilterUpcomingAssessments } from "@/seqta/utils/FilterUpcomingAssessments";
 import { getMockNotices } from "@/seqta/ui/dev/hideSensitiveContent";
 import { setupFixedTooltips } from "@/seqta/utils/fixedTooltip";
+import { extensionAssetUrl } from "@/seqta/utils/extensionAsset";
 
 let LessonInterval: any;
 let currentSelectedDate = new Date();
@@ -113,7 +113,16 @@ export async function loadHomePage() {
   callHomeTimetable(TodayFormatted, true);
 
   const activeClass = classes.find((c: any) => c.hasOwnProperty("active"));
-  const activeSubjects = activeClass?.subjects || [];
+  const activeYear = activeClass?.year;
+  const allSubjectsInYear = classes
+    .filter((c: any) => c.year === activeYear)
+    .flatMap((c: any) => c.subjects || []);
+  const seen = new Set<string>();
+  const activeSubjects = allSubjectsInYear.filter((s: any) => {
+    if (seen.has(s.code)) return false;
+    seen.add(s.code);
+    return true;
+  });
   const activeSubjectCodes = activeSubjects.map((s: any) => s.code);
   const currentAssessments = assessments
     .filter((a: any) => activeSubjectCodes.includes(a.code))
@@ -146,7 +155,7 @@ export async function loadHomePage() {
       const emptyState = document.createElement("div");
       emptyState.classList.add("day-empty");
       const img = document.createElement("img");
-      img.src = browser.runtime.getURL(LogoLight);
+      img.src = extensionAssetUrl(LogoLight);
       const text = document.createElement("p");
       text.innerText = "No notices available.";
       emptyState.append(img, text);
@@ -295,7 +304,7 @@ function processNotices(response: any, labelArray: string[]) {
     const emptyState = document.createElement("div");
     emptyState.classList.add("day-empty");
     const img = document.createElement("img");
-    img.src = browser.runtime.getURL(LogoLight);
+    img.src = extensionAssetUrl(LogoLight);
     const text = document.createElement("p");
     text.innerText = "No notices for today.";
     emptyState.append(img, text);
@@ -307,7 +316,7 @@ function processNotices(response: any, labelArray: string[]) {
     const emptyState = document.createElement("div");
     emptyState.classList.add("day-empty");
     const img = document.createElement("img");
-    img.src = browser.runtime.getURL(LogoLight);
+    img.src = extensionAssetUrl(LogoLight);
     const text = document.createElement("p");
     text.innerText = "No notices for today.";
     emptyState.append(img, text);
@@ -726,7 +735,7 @@ function callHomeTimetable(date: string, change?: any) {
       const dummyDay = document.createElement("div");
       dummyDay.classList.add("day-empty");
       const img = document.createElement("img");
-      img.src = browser.runtime.getURL(LogoLight);
+      img.src = extensionAssetUrl(LogoLight);
       const text = document.createElement("p");
       text.innerText = "No lessons available.";
       dummyDay.append(img, text);
@@ -978,7 +987,7 @@ async function CreateUpcomingSection(assessments: any, activeSubjects: any) {
   if (assessments.length === 0) {
     upcomingitemcontainer!.innerHTML = `
       <div class="day-empty">
-        <img src="${browser.runtime.getURL(LogoLight)}" />
+        <img src="${extensionAssetUrl(LogoLight)}" />
         <p>No assessments available.</p>
       </div>`;
   }

src/seqta/utils/Openers/OpenEngageParentsAnnouncement.ts

@@ -14,14 +14,13 @@ export function showEngageParentsToast() {
   settingsState.engageParentsAnnouncementShown = true;
 
   const toast = document.createElement("div");
-  toast.className = "bsplus-toast engageParentsToast";
+  toast.className = "bsplus-toast";
   toast.innerHTML = /* html */ `
-    <button class="bsplus-toast-close" aria-label="Dismiss">&times;</button>
     <div class="bsplus-toast-content">
-      <p class="bsplus-toast-eyebrow">SEQTA Engage support</p>
       <strong>BetterSEQTA+ now supports <span class="seqtaEngageAccent">SEQTA Engage</span></strong>
       <p>Buy your mum a BetterSEQTA Plus! Parents now get themes, a cleaner home page, and all the Plus polish on SEQTA Engage.</p>
     </div>
+    <button class="bsplus-toast-close" aria-label="Dismiss">&times;</button>
   `;
 
   toast.style.opacity = "0";

src/seqta/utils/Openers/OpenThemeOfTheMonthPopup.ts

@@ -1,218 +0,0 @@
-import browser from "webextension-polyfill";
-import stringToHTML from "../stringToHTML";
-import { settingsState } from "../listeners/SettingsState";
-import { 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 || settingsState.themeOfTheMonthDisabled) 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 closeThemeOfTheMonthCard(
-  card: HTMLElement,
-  onDismissed?: () => void,
-  markSeen = true,
-) {
-  if (card.classList.contains("themeOfTheMonthCardClosing")) return;
-
-  if (markSeen) {
-    const entryId = card.dataset.entryId;
-    if (entryId) settingsState.themeOfTheMonthLastSeenId = entryId;
-  }
-
-  card.classList.add("themeOfTheMonthCardClosing");
-  window.setTimeout(() => {
-    card.remove();
-    onDismissed?.();
-  }, 180);
-}
-
-/**
- * Renders the Theme of the Month announcement card.
- */
-export async function OpenThemeOfTheMonthPopup(
-  entry: ThemeOfTheMonthEntry,
-  onDismissed?: () => void,
-) {
-  document.getElementById("theme-of-the-month-card")?.remove();
-
-  const monthLabel = formatMonthLabel(entry.month);
-  const heroUrl = await resolvePopupHeroImageUrl(entry);
-  const description = escapeHTML(entry.description).replace(/\n/g, " ");
-  const linkedThemeId = entry.theme_id ?? entry.theme?.id;
-
-  const card = stringToHTML(/* html */ `
-    <aside id="theme-of-the-month-card" class="themeOfTheMonthCard" role="dialog" aria-label="Theme of the Month">
-      <button type="button" class="themeOfTheMonthCardClose" aria-label="Close Theme of the Month">×</button>
-      ${
-        heroUrl
-          ? `<img class="themeOfTheMonthCardImage" src="${escapeHTML(heroUrl)}" alt="${escapeHTML(entry.title)}" />`
-          : ""
-      }
-      <div class="themeOfTheMonthCardBody">
-        <p class="themeOfTheMonthCardEyebrow">Theme of the Month · ${escapeHTML(monthLabel)}</p>
-        <h2>${escapeHTML(entry.title)}</h2>
-        <p class="themeOfTheMonthCardDescription">${description}</p>
-        <div class="themeOfTheMonthCardActions">
-          ${
-            linkedThemeId
-              ? `<button type="button" class="themeOfTheMonthCardPrimary">Open Store</button>`
-              : ""
-          }
-          <button type="button" class="themeOfTheMonthCardSecondary">Don't show again</button>
-        </div>
-      </div>
-    </aside>
-  `).firstChild as HTMLElement;
-
-  card.dataset.entryId = entry.id;
-  const autoCloseTimeout = window.setTimeout(() => {
-    closeThemeOfTheMonthCard(card, onDismissed);
-  }, 12000);
-
-  const dismiss = (markSeen = true) => {
-    window.clearTimeout(autoCloseTimeout);
-    closeThemeOfTheMonthCard(card, onDismissed, markSeen);
-  };
-
-  card.addEventListener("mouseenter", () => window.clearTimeout(autoCloseTimeout), { once: true });
-
-  card.querySelector(".themeOfTheMonthCardClose")?.addEventListener("click", () => {
-    dismiss();
-  });
-
-  card.querySelector(".themeOfTheMonthCardPrimary")?.addEventListener("click", () => {
-    dismiss();
-    openThemeStoreWithHighlight(linkedThemeId!);
-  });
-
-  card.querySelector(".themeOfTheMonthCardSecondary")?.addEventListener("click", () => {
-    settingsState.themeOfTheMonthDisabled = true;
-    dismiss();
-  });
-
-  document.body.appendChild(card);
-}
-
-/**
- * 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/OpenWhatsNewPopup.ts

@@ -33,14 +33,7 @@ export function OpenWhatsNewPopup(onDismissed?: () => void) {
 
   const text = stringToHTML(/* html */ `
     <div class="whatsnewTextContainer" style="height: 50%;overflow-y: auto;">
-      <h1>3.6.5 - Theme of the Month, custom message folders & assessment weighting overrides</h1>
+
-      <li>Added Theme of the Month — a monthly featured theme popup with a link to view it in the theme store.</li>
-      <li>Added custom message folders for organising direct DM's with drag to reorder.</li>
-      <li>Added the ability to override/add weightings to assessments (on assessment page).</li>
-      <li>Fixed custom room and teacher names not showing in the timetable popup.</li>
-      <li>Fixed assessment averages treating N/A weightings incorrectly in subject average calculations.</li>
-      <li>Fixed the display of weightings that could not automatically be discovered.</li>
-      <li>Fixed the formatting of the weighting tag that was broken due to a SEQTA update.</li>
 
       <h1>3.6.4 - Theme flavours and fixes, Upcoming Assements improvement</h1>
       <li>Added advanced colour adjustments variables for theme customisation.</li>

src/seqta/utils/Openers/StartupPopupQueue.ts

@@ -4,40 +4,20 @@ 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),
- * Theme of the Month (when a new monthly entry hasn't been seen), then shows
+ * then shows the SEQTA Engage toast (once, non-blocking).
- * the SEQTA Engage toast (once, non-blocking).
  */
-export async function runStartupPopupQueue() {
+export 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/SendNewsPage.ts

@@ -5,6 +5,7 @@ import { settingsState } from "./listeners/SettingsState";
 import browser from "webextension-polyfill";
 import LogoLightOutline from "@/resources/icons/betterseqta-light-outline.png";
 import { animate, stagger } from "motion";
+import { extensionAssetUrl } from "@/seqta/utils/extensionAsset";
 
 export async function SendNewsPage() {
   console.info("[BetterSEQTA+] Started Loading News Page");
@@ -58,7 +59,7 @@ export async function SendNewsPage() {
     const emptyState = document.createElement("div");
     emptyState.classList.add("day-empty");
     const img = document.createElement("img");
-    img.src = browser.runtime.getURL(LogoLightOutline);
+    img.src = extensionAssetUrl(LogoLightOutline);
     const text = document.createElement("p");
     text.innerText = "No news articles available right now.";
     emptyState.append(img, text);
@@ -79,7 +80,7 @@ export async function SendNewsPage() {
 
     if (article.urlToImage == "null" || article.urlToImage == null) {
       articleimage.style.cssText = `
-        background-image: url(${browser.runtime.getURL(LogoLightOutline)});
+        background-image: url(${extensionAssetUrl(LogoLightOutline)});
         width: 20%;
         margin: 0 7.5%;
       `;

src/seqta/utils/adaptiveThemeColour.ts

@@ -1,4 +1,9 @@
 import { getUserInfo } from "@/seqta/ui/AddBetterSEQTAElements";
+import {
+  isBetterseqtaWasmReady,
+  normalizeSeqtaSubjectHexColour,
+  parseSeqtaCoursesAssessmentsPageJson,
+} from "@/wasm/init";
 
 /**
  * Parses the current page from window.location.hash.
@@ -12,6 +17,24 @@ import { getUserInfo } from "@/seqta/ui/AddBetterSEQTAElements";
  */
 function parsePageContext(): { programme: number; metaclass: number } | null {
   const hash = window.location.hash || "";
+  if (isBetterseqtaWasmReady()) {
+    try {
+      const json = parseSeqtaCoursesAssessmentsPageJson(hash);
+      if (json) {
+        const o = JSON.parse(json) as { programme: number; metaclass: number };
+        if (
+          typeof o.programme === "number" &&
+          typeof o.metaclass === "number" &&
+          !Number.isNaN(o.programme) &&
+          !Number.isNaN(o.metaclass)
+        ) {
+          return { programme: o.programme, metaclass: o.metaclass };
+        }
+      }
+    } catch {
+      /* fall through */
+    }
+  }
   const match = hash.match(/[?&]page=\/(courses|assessments)\/(?:[^/]+\/)?(\d+):(\d+)/);
   if (!match) return null;
   const programme = parseInt(match[2], 10);
@@ -112,6 +135,14 @@ export async function getAdaptiveColour(): Promise<string | null> {
   const colour = await getSubjectColour(subjectCode, userId);
   if (!colour || typeof colour !== "string") return null;
 
+  if (isBetterseqtaWasmReady()) {
+    try {
+      const normalized = normalizeSeqtaSubjectHexColour(colour);
+      if (normalized) return normalized;
+    } catch {
+      /* fall through */
+    }
+  }
   // Basic hex validation
   if (/^#([0-9A-Fa-f]{3}){1,2}$/.test(colour)) return colour;
   if (/^[0-9A-Fa-f]{6}$/.test(colour)) return `#${colour}`;

src/seqta/utils/base64ToBlob.ts

@@ -1,4 +1,6 @@
-const base64ToBlob = (base64: string, contentType: string = ""): Blob => {
+import { decodeBase64, isBetterseqtaWasmReady } from "@/wasm/init";
+
+const base64ToBlobTs = (base64: string, contentType: string = ""): Blob => {
   const byteCharacters = atob(base64);
   const byteArrays: Uint8Array[] = [];
 
@@ -14,4 +16,15 @@ const base64ToBlob = (base64: string, contentType: string = ""): Blob => {
   return new Blob(byteArrays, { type: contentType });
 };
 
+const base64ToBlob = (base64: string, contentType: string = ""): Blob => {
+  const trimmed = base64.trim();
+  if (isBetterseqtaWasmReady()) {
+    const bytes = decodeBase64(trimmed);
+    if (bytes.byteLength > 0 || trimmed.length === 0) {
+      return new Blob([bytes], { type: contentType });
+    }
+  }
+  return base64ToBlobTs(trimmed, contentType);
+};
+
 export default base64ToBlob;

src/seqta/utils/blobToBase64.ts

@@ -1,4 +1,6 @@
-export const blobToBase64 = (blob: Blob) => {
+import { encodeDataUrl, isBetterseqtaWasmReady } from "@/wasm/init";
+
+function readAsDataUrl(blob: Blob): Promise<string> {
   return new Promise<string>((resolve, reject) => {
     const reader = new FileReader();
     reader.onload = () => {
@@ -8,4 +10,21 @@ export const blobToBase64 = (blob: Blob) => {
     reader.onerror = reject;
     reader.readAsDataURL(blob);
   });
+}
+
+export const blobToBase64 = (blob: Blob) => {
+  return (async () => {
+    if (isBetterseqtaWasmReady()) {
+      try {
+        const buf = await blob.arrayBuffer();
+        return encodeDataUrl(
+          blob.type || "application/octet-stream",
+          new Uint8Array(buf),
+        );
+      } catch {
+        /* fall through */
+      }
+    }
+    return readAsDataUrl(blob);
+  })();
 };

src/seqta/utils/convertTo12HourFormat.ts

@@ -1,4 +1,9 @@
-export function convertTo12HourFormat(
+import {
+  convertTo12HourFormatWasm,
+  isBetterseqtaWasmReady,
+} from "@/wasm/init";
+
+function convertTo12HourFormatTs(
   time: string,
   noMinutes: boolean = false,
 ): string {
@@ -19,3 +24,18 @@ export function convertTo12HourFormat(
 
   return `${hoursStr}${noMinutes ? "" : `:${minutes.toString().padStart(2, "0")}`}${period}`;
 }
+
+/** 12-hour time label; Rust/WASM when initialized, else TypeScript. */
+export function convertTo12HourFormat(
+  time: string,
+  noMinutes: boolean = false,
+): string {
+  if (!isBetterseqtaWasmReady()) {
+    return convertTo12HourFormatTs(time, noMinutes);
+  }
+  try {
+    return convertTo12HourFormatWasm(time, noMinutes);
+  } catch {
+    return convertTo12HourFormatTs(time, noMinutes);
+  }
+}

src/seqta/utils/engageRoute.ts

@@ -1,8 +1,26 @@
+import {
+  isBetterseqtaWasmReady,
+  parseEngageRoutePage,
+} from "@/wasm/init";
+
 /**
  * Learn-style hash routes on Engage: `#?page=/home` → `"home"`.
  * Falls back to the legacy path segment used by classic Learn routing.
  */
 export function getEngageRoutePage(): string | undefined {
+  if (typeof window === "undefined") return undefined;
+
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return parseEngageRoutePage(
+        window.location.hash,
+        window.location.href,
+      );
+    } catch {
+      /* fall through */
+    }
+  }
+
   const hash = window.location.hash.replace(/^#/, "");
   if (hash) {
     const qs = hash.startsWith("?") ? hash : `?${hash}`;

src/seqta/utils/extensionAsset.ts

@@ -0,0 +1,38 @@
+function hasExtensionRuntimeGetUrl(): boolean {
+  const runtime = (globalThis as any)?.chrome?.runtime;
+  return (
+    !!runtime &&
+    typeof runtime.getURL === "function" &&
+    typeof runtime.id === "string" &&
+    runtime.id.length > 0
+  );
+}
+
+/**
+ * Resolve an extension asset URL safely across content-script and page contexts.
+ * Falls back to the provided path when extension runtime APIs are unavailable.
+ */
+export function extensionAssetUrl(path: string): string {
+  if (!path) {
+    return path;
+  }
+
+  // Already fully-resolved URL.
+  if (
+    path.startsWith("chrome-extension://") ||
+    path.startsWith("moz-extension://") ||
+    path.startsWith("http://") ||
+    path.startsWith("https://") ||
+    path.startsWith("data:") ||
+    path.startsWith("blob:")
+  ) {
+    return path;
+  }
+
+  if (hasExtensionRuntimeGetUrl()) {
+    return (globalThis as any).chrome.runtime.getURL(path.replace(/^\/+/, ""));
+  }
+
+  return path;
+}
+

src/seqta/utils/imageConversions.ts

@@ -1,9 +1,26 @@
+import {
+  decodeBase64,
+  isBetterseqtaWasmReady,
+  stripDataUrlBase64Payload,
+} from "@/wasm/init";
+
 export function base64toblobURL(base64: string) {
-  // Extract base64 data from the data URI
+  if (isBetterseqtaWasmReady()) {
+    try {
+      const payload = stripDataUrlBase64Payload(base64);
+      const bytes = decodeBase64(payload.trim());
+      if (bytes.byteLength > 0) {
+        const blob = new Blob([bytes], { type: "image/png" });
+        return URL.createObjectURL(blob);
+      }
+    } catch {
+      /* fall through */
+    }
+  }
+
   const base64Index = base64.indexOf(",") + 1;
   const imageBase64 = base64.substring(base64Index);
 
-  // Convert base64 to blob
   const byteCharacters = atob(imageBase64);
   const byteNumbers = new Uint8Array(byteCharacters.length);
   for (let i = 0; i < byteCharacters.length; i++) {
@@ -12,8 +29,5 @@ export function base64toblobURL(base64: string) {
   const byteArray = new Uint8Array(byteNumbers);
   const blob = new Blob([byteArray], { type: "image/png" });
 
-  // Convert blob to blob URL
+  return URL.createObjectURL(blob);
-  const imageUrl = URL.createObjectURL(blob);
-
-  return imageUrl;
 }

src/seqta/utils/isSeqtaEngage.ts

@@ -1,4 +1,14 @@
+import { isBetterseqtaWasmReady, titleIsSeqtaEngage } from "@/wasm/init";
+
 /** SEQTA Engage (React) uses a different shell from classic SEQTA Learn. */
 export function isSeqtaEngageExperience(): boolean {
+  if (typeof document === "undefined") return false;
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return titleIsSeqtaEngage(document.title);
+    } catch {
+      /* fall through */
+    }
+  }
   return document.title.includes("SEQTA Engage");
 }

src/seqta/utils/openThemeStoreWithHighlight.ts

@@ -1,39 +0,0 @@
-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/seqta/utils/updateTimetableTimes.ts

@@ -1,7 +1,41 @@
 import { settingsState } from "@/seqta/utils/listeners/SettingsState";
+import {
+  formatTimetableTimeLabel,
+  formatTimetableTimeRange,
+  isBetterseqtaWasmReady,
+  locationHashIncludesTimetablePage,
+} from "@/wasm/init";
 import { convertTo12HourFormat } from "./convertTo12HourFormat";
 import { waitForElm } from "./waitForElm";
 
+function timetableLabel12(original: string, noMinutes: boolean): string {
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return formatTimetableTimeLabel(original, noMinutes);
+    } catch {
+      /* fall through */
+    }
+  }
+  return convertTo12HourFormat(original, noMinutes)
+    .toLowerCase()
+    .replace(" ", "");
+}
+
+function timetableRange12(original: string): string | undefined {
+  if (isBetterseqtaWasmReady()) {
+    try {
+      const r = formatTimetableTimeRange(original);
+      if (r) return r;
+    } catch {
+      /* fall through */
+    }
+  }
+  if (!original.includes("–") && !original.includes("-")) return undefined;
+  const [start, end] = original.split(/[-–]/).map((p) => p.trim());
+  if (!start || !end) return undefined;
+  return `${timetableLabel12(start, false)}–${timetableLabel12(end, false)}`;
+}
+
 let timetableObserver: MutationObserver | null = null;
 let isOnTimetablePage = false;
 let isInitialized = false;
@@ -19,9 +53,7 @@ function updateTimeElements(): void {
     const original = el.dataset.original;
     if (!original) return;
 
-    el.textContent = convertTo12HourFormat(original, true)
+    el.textContent = timetableLabel12(original, true);
-      .toLowerCase()
-      .replace(" ", "");
   });
 
   const entryTimes = timetablePage.querySelectorAll<HTMLElement>(".entry .times");
@@ -30,30 +62,30 @@ function updateTimeElements(): void {
     const original = el.dataset.original || "";
     if (!original.includes("–") && !original.includes("-")) return;
 
-    const [start, end] = original.split(/[-–]/).map((p) => p.trim());
+    const ranged = timetableRange12(original);
-    if (!start || !end) return;
+    if (ranged) el.textContent = ranged;
-
-    const start12 = convertTo12HourFormat(start).toLowerCase().replace(" ", "");
-    const end12 = convertTo12HourFormat(end).toLowerCase().replace(" ", "");
-    el.textContent = `${start12}–${end12}`;
   });
 
-    const quickbarTimes = document.querySelectorAll<HTMLElement>(".quickbar .meta .times");
+  const quickbarTimes = document.querySelectorAll<HTMLElement>(
+    ".quickbar .meta .times",
+  );
   quickbarTimes.forEach((el) => {
     if (!el.dataset.original) el.dataset.original = el.textContent || "";
     const original = el.dataset.original || "";
 
-    if (!original.includes("–") && !original.includes("-")) return;
+    const ranged = timetableRange12(original);
-    const [start, end] = original.split(/[-–]/).map((p) => p.trim());
+    if (ranged) el.textContent = ranged;
-    
-    if (!start || !end) return;
-    const start12 = convertTo12HourFormat(start).toLowerCase().replace(" ", "");
-    const end12 = convertTo12HourFormat(end).toLowerCase().replace(" ", "");
-    el.textContent = `${start12}–${end12}`;
   });
 }
 
 function checkIfOnTimetablePage(): boolean {
+  if (isBetterseqtaWasmReady()) {
+    try {
+      return locationHashIncludesTimetablePage(window.location.hash);
+    } catch {
+      /* fall through */
+    }
+  }
   return window.location.hash.includes("page=/timetable");
 }
 

src/types/storage.ts

@@ -36,10 +36,6 @@ 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;
-  /** Permanently disables Theme of the Month startup prompts. */
-  themeOfTheMonthDisabled?: boolean;
   timeFormat?: string;
   animations: boolean;
   defaultPage: string;

src/wasm/init.ts

@@ -0,0 +1,68 @@
+/**
+ * wasm-bindgen bundle (`wasm-pack --target web`): call {@link initBetterseqtaWasm}
+ * before using exports that touch the module instance.
+ */
+import wasmInit, {
+  childTextHasSeqtaCopyright,
+  colorCssThresholdDistance,
+  convertTo12HourFormat as convertTo12HourFormatWasm,
+  decodeBase64,
+  encodeBase64,
+  encodeDataUrl,
+  escapeJsForInlineScript,
+  escapeJsSingleQuotedString,
+  extensionWasmVersion,
+  extractWeightFromPdfText,
+  formatTimetableTimeLabel,
+  formatTimetableTimeRange,
+  isFirefoxUserAgent,
+  locationHashIncludesTimetablePage,
+  normalizeSeqtaSubjectHexColour,
+  parseEngageRoutePage,
+  parseGradeToPercent,
+  parseSeqtaCoursesAssessmentsPageJson,
+  stripDataUrlBase64Payload,
+  titleIsSeqtaEngage,
+  titleIsSeqtaLearnOrEngage,
+} from "@/wasm/pkg/betterseqta_wasm.js";
+
+let wasmReady = false;
+let wasmInflight: Promise<void> | null = null;
+
+export async function initBetterseqtaWasm(): Promise<void> {
+  if (wasmReady) return;
+  if (!wasmInflight) {
+    wasmInflight = wasmInit().then(() => {
+      wasmReady = true;
+    });
+  }
+  await wasmInflight;
+}
+
+export function isBetterseqtaWasmReady(): boolean {
+  return wasmReady;
+}
+
+export {
+  childTextHasSeqtaCopyright,
+  colorCssThresholdDistance,
+  convertTo12HourFormatWasm,
+  decodeBase64,
+  encodeBase64,
+  encodeDataUrl,
+  escapeJsForInlineScript,
+  escapeJsSingleQuotedString,
+  extensionWasmVersion,
+  extractWeightFromPdfText,
+  formatTimetableTimeLabel,
+  formatTimetableTimeRange,
+  isFirefoxUserAgent,
+  locationHashIncludesTimetablePage,
+  normalizeSeqtaSubjectHexColour,
+  parseEngageRoutePage,
+  parseGradeToPercent,
+  parseSeqtaCoursesAssessmentsPageJson,
+  stripDataUrlBase64Payload,
+  titleIsSeqtaEngage,
+  titleIsSeqtaLearnOrEngage,
+};

vite.config.ts

@@ -28,6 +28,9 @@ const mode = process.env.MODE || "chrome"; // Check the environment variable to
 const useMillion = mode.toLowerCase() !== "firefox";
 
 export default defineConfig(({ command }) => ({
+  // Default "/" makes Vite's modulepreload helper resolve deps as "/assets/…", which loads from the
+  // page origin in content scripts. Relative base uses `new URL(dep, import.meta.url)` instead.
+  base: "./",
   plugins: [
     base64Loader,
     InlineWorkerPlugin(),

wasm/betterseqta-wasm/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "betterseqta-wasm"
+version = "0.1.0"
+edition = "2021"
+authors = ["BetterSEQTA+"]
+description = "WebAssembly helpers for the BetterSEQTA+ browser extension"
+repository = "https://github.com/BetterSEQTA/BetterSEQTA-Plus"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+wasm-bindgen = "0.2"
+base64 = "0.22.1"
+percent-encoding = "2.3.1"
+regex = "1.11.1"
+csscolorparser = "0.7.2"

wasm/betterseqta-wasm/src/base64_api.rs

@@ -0,0 +1,45 @@
+//! Base64 and data-URL helpers.
+
+use base64::Engine;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(js_name = encodeBase64)]
+pub fn encode_base64(bytes: &[u8]) -> String {
+    base64::engine::general_purpose::STANDARD.encode(bytes)
+}
+
+#[wasm_bindgen(js_name = decodeBase64)]
+pub fn decode_base64(b64: &str) -> Vec<u8> {
+    base64::engine::general_purpose::STANDARD
+        .decode(b64.trim())
+        .unwrap_or_default()
+}
+
+/// `data:{mime};base64,{payload}` (mirrors `readAsDataURL` output shape).
+#[wasm_bindgen(js_name = encodeDataUrl)]
+pub fn encode_data_url(mime: &str, bytes: &[u8]) -> String {
+    let mime = mime.trim();
+    let mime = if mime.is_empty() {
+        "application/octet-stream"
+    } else {
+        mime
+    };
+    format!(
+        "data:{};base64,{}",
+        mime,
+        base64::engine::general_purpose::STANDARD.encode(bytes)
+    )
+}
+
+/// Strips a leading `data:*;base64,` prefix; returns the original string when no prefix matches.
+#[wasm_bindgen(js_name = stripDataUrlBase64Payload)]
+pub fn strip_data_url_base64_payload(s: &str) -> String {
+    let Some(rest) = s.strip_prefix("data:") else {
+        return s.to_string();
+    };
+    let Some(i) = rest.find(";base64,") else {
+        return s.to_string();
+    };
+    let after = &rest[i + ";base64,".len()..];
+    after.to_string()
+}

wasm/betterseqta-wasm/src/engage.rs

@@ -0,0 +1,48 @@
+//! Engage hash routing (`getEngageRoutePage`).
+
+use percent_encoding::percent_decode_str;
+use std::borrow::Cow;
+use wasm_bindgen::prelude::*;
+
+/// Mirrors `getEngageRoutePage` using `window.location.hash` and `window.location.href` inputs.
+#[wasm_bindgen(js_name = parseEngageRoutePage)]
+pub fn parse_engage_route_page(hash: &str, full_href: &str) -> Option<String> {
+    let hash = hash.strip_prefix('#').unwrap_or(hash);
+    if !hash.is_empty() {
+        let qs: Cow<'_, str> = if hash.starts_with('?') {
+            Cow::Borrowed(hash)
+        } else {
+            Cow::Owned(format!("?{hash}"))
+        };
+        if let Some(seg) = parse_page_segment_from_query_string(qs.as_ref()) {
+            return Some(seg);
+        }
+    }
+    segment_from_href_split(full_href)
+}
+
+fn parse_page_segment_from_query_string(qs: &str) -> Option<String> {
+    let body = qs.strip_prefix('?').unwrap_or(qs);
+    for pair in body.split('&') {
+        let mut it = pair.splitn(2, '=');
+        let key = it.next()?;
+        if key != "page" {
+            continue;
+        }
+        let enc = it.next().unwrap_or("");
+        let decoded = percent_decode_str(enc).decode_utf8_lossy();
+        let page = decoded.as_ref();
+        if let Some(rest) = page.strip_prefix('/') {
+            let seg = rest.split('/').next().unwrap_or("");
+            if !seg.is_empty() {
+                return Some(seg.to_string());
+            }
+            return None;
+        }
+    }
+    None
+}
+
+fn segment_from_href_split(full_href: &str) -> Option<String> {
+    full_href.split('/').nth(4).map(std::string::ToString::to_string)
+}

wasm/betterseqta-wasm/src/escape.rs

@@ -0,0 +1,15 @@
+//! String escaping for injected scripts (PDF / Firefox workarounds).
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(js_name = escapeJsSingleQuotedString)]
+pub fn escape_js_single_quoted_string(s: &str) -> String {
+    s.replace('\\', "\\\\").replace('\'', "\\'")
+}
+
+/// `escJsSingleQuoted` plus double-quote escapes (used for some injected literals).
+#[wasm_bindgen(js_name = escapeJsForInlineScript)]
+pub fn escape_js_for_inline_script(s: &str) -> String {
+    escape_js_single_quoted_string(s)
+        .replace('"', "\\\"")
+}

wasm/betterseqta-wasm/src/grades.rs

@@ -0,0 +1,46 @@
+//! Grade parsing (`parseGrade` in `assessmentsAverage/utils.ts`).
+
+use wasm_bindgen::prelude::*;
+
+fn letter_grade_percent(s: &str) -> Option<f64> {
+    Some(match s {
+        "A+" => 100.0,
+        "A" => 95.0,
+        "A-" => 90.0,
+        "B+" => 85.0,
+        "B" => 80.0,
+        "B-" => 75.0,
+        "C+" => 70.0,
+        "C" => 65.0,
+        "C-" => 60.0,
+        "D+" => 55.0,
+        "D" => 50.0,
+        "D-" => 45.0,
+        "E+" => 40.0,
+        "E" => 35.0,
+        "E-" => 30.0,
+        "F" => 0.0,
+        _ => return None,
+    })
+}
+
+/// Mirrors `parseGrade` (numeric percent 0–100).
+#[wasm_bindgen(js_name = parseGradeToPercent)]
+pub fn parse_grade_to_percent(text: &str) -> f64 {
+    let str = text.trim().to_ascii_uppercase();
+    if str.contains('/') {
+        let mut parts = str.split('/');
+        let raw = parts.next().and_then(|p| p.parse::<f64>().ok());
+        let max = parts.next().and_then(|p| p.parse::<f64>().ok());
+        if let (Some(r), Some(m)) = (raw, max) {
+            if m != 0.0 {
+                return (r / m) * 100.0;
+            }
+        }
+        return 0.0;
+    }
+    if str.contains('%') {
+        return str.replace('%', "").parse::<f64>().unwrap_or(0.0);
+    }
+    letter_grade_percent(&str).unwrap_or(0.0)
+}

wasm/betterseqta-wasm/src/hex_colour.rs

@@ -0,0 +1,28 @@
+//! Subject timetable colour hex validation (`getAdaptiveColour` in `adaptiveThemeColour.ts`).
+
+use regex::Regex;
+use std::sync::OnceLock;
+use wasm_bindgen::prelude::*;
+
+fn re_hash_shorthand_or_full() -> &'static Regex {
+    static RE: OnceLock<Regex> = OnceLock::new();
+    RE.get_or_init(|| Regex::new(r"(?i)^#([0-9a-f]{3}|[0-9a-f]{6})$").expect("hex # regex"))
+}
+
+fn re_plain_six() -> &'static Regex {
+    static RE: OnceLock<Regex> = OnceLock::new();
+    RE.get_or_init(|| Regex::new(r"(?i)^[0-9a-f]{6}$").expect("hex6 regex"))
+}
+
+/// Returns `#rgb` / `#rrggbb` unchanged, or adds `#` to a bare 6-digit hex; otherwise `undefined`.
+#[wasm_bindgen(js_name = normalizeSeqtaSubjectHexColour)]
+pub fn normalize_seqta_subject_hex_colour(colour: &str) -> Option<String> {
+    let c = colour.trim();
+    if re_hash_shorthand_or_full().is_match(c) {
+        return Some(c.to_string());
+    }
+    if re_plain_six().is_match(c) {
+        return Some(format!("#{c}"));
+    }
+    None
+}

wasm/betterseqta-wasm/src/lib.rs

@@ -0,0 +1,140 @@
+//! BetterSEQTA+ WebAssembly module (wasm-bindgen).
+//! Pure helpers mirrored from the TypeScript extension.
+
+mod base64_api;
+mod engage;
+mod escape;
+mod grades;
+mod hex_colour;
+mod page_context;
+mod pdf_weight;
+mod seqta;
+mod threshold;
+mod time_format;
+mod timetable_nav;
+mod user_agent;
+
+pub use base64_api::{
+    decode_base64, encode_base64, encode_data_url, strip_data_url_base64_payload,
+};
+pub use engage::parse_engage_route_page;
+pub use escape::{escape_js_for_inline_script, escape_js_single_quoted_string};
+pub use grades::parse_grade_to_percent;
+pub use hex_colour::normalize_seqta_subject_hex_colour;
+pub use page_context::parse_seqta_courses_assessments_page_json;
+pub use pdf_weight::extract_weight_from_pdf_text;
+pub use seqta::{
+    child_text_has_seqta_copyright, title_is_seqta_engage_only, title_is_seqta_learn_or_engage,
+};
+pub use threshold::color_css_threshold_distance;
+pub use time_format::{
+    convert_to_12_hour_format, format_timetable_time_label, format_timetable_time_range,
+};
+pub use timetable_nav::location_hash_includes_timetable_page;
+pub use user_agent::is_firefox_user_agent;
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(js_name = extensionWasmVersion)]
+pub fn extension_wasm_version() -> String {
+    env!("CARGO_PKG_VERSION").to_string()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn twelve_hour_matches_ts_examples() {
+        assert_eq!(convert_to_12_hour_format("13:05", false), "1:05pm");
+        assert_eq!(convert_to_12_hour_format("0:30", false), "12:30am");
+        assert_eq!(convert_to_12_hour_format("12:00", false), "12:00pm");
+        assert_eq!(convert_to_12_hour_format("12:00", true), "12pm");
+    }
+
+    #[test]
+    fn seqta_strings() {
+        assert!(child_text_has_seqta_copyright(
+            "foo Copyright (c) SEQTA Software bar"
+        ));
+        assert!(!child_text_has_seqta_copyright("other"));
+        assert!(title_is_seqta_learn_or_engage("SEQTA Learn — Home"));
+        assert!(title_is_seqta_engage_only("SEQTA Engage"));
+        assert!(!title_is_seqta_engage_only("SEQTA Learn"));
+    }
+
+    #[test]
+    fn engage_routes() {
+        assert_eq!(
+            parse_engage_route_page("#?page=/home/extra", "https://x.example/a/b/c/d/e"),
+            Some("home".into())
+        );
+        assert_eq!(
+            parse_engage_route_page("#?page=%2Fhome%2Fextra", "https://x.example/a/b/c/d/e"),
+            Some("home".into())
+        );
+        assert_eq!(
+            parse_engage_route_page("", "a/b/c/d/home/extra"),
+            Some("home".into())
+        );
+    }
+
+    #[test]
+    fn grades_and_weight() {
+        assert_eq!(parse_grade_to_percent("  12/20 "), 60.0);
+        assert_eq!(parse_grade_to_percent("85%"), 85.0);
+        assert_eq!(parse_grade_to_percent("A-"), 90.0);
+        assert_eq!(
+            extract_weight_from_pdf_text("foo Weight: 12.5 bar").as_deref(),
+            Some("12.5")
+        );
+    }
+
+    #[test]
+    fn firefox_ua() {
+        assert!(is_firefox_user_agent(
+            "Mozilla/5.0 (Windows NT 10.0; rv:109.0) Gecko/20100101 Firefox/115.0"
+        ));
+        assert!(!is_firefox_user_agent(
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/120.0.0.0"
+        ));
+    }
+
+    #[test]
+    fn timetable_hash() {
+        assert!(location_hash_includes_timetable_page("#?page=/timetable"));
+        assert!(!location_hash_includes_timetable_page("#?page=/home"));
+    }
+
+    #[test]
+    fn page_context_json() {
+        let j = parse_seqta_courses_assessments_page_json(
+            "#?page=/courses/2023S/4804:11066",
+        )
+        .expect("json");
+        assert!(j.contains("\"programme\":4804"));
+        assert!(j.contains("\"metaclass\":11066"));
+        let j2 = parse_seqta_courses_assessments_page_json("#?page=/courses/4804:11066")
+            .expect("json2");
+        assert!(j2.contains("4804"));
+    }
+
+    #[test]
+    fn hex_subject_colour() {
+        assert_eq!(
+            normalize_seqta_subject_hex_colour("#aBc").as_deref(),
+            Some("#aBc")
+        );
+        assert_eq!(
+            normalize_seqta_subject_hex_colour("aabbcc").as_deref(),
+            Some("#aabbcc")
+        );
+        assert!(normalize_seqta_subject_hex_colour("gggggg").is_none());
+    }
+
+    #[test]
+    fn threshold_basic() {
+        let t = color_css_threshold_distance("rgb(3,4,5)");
+        assert!((t - (3f64 * 3.0 + 4.0 * 4.0 + 5.0 * 5.0).sqrt()).abs() < 1e-6);
+    }
+}

wasm/betterseqta-wasm/src/page_context.rs

@@ -0,0 +1,28 @@
+//! `#?page=/courses/...` and `#?page=/assessments/...` programme:metaclass parsing
+//! (mirrors `parsePageContext` in `adaptiveThemeColour.ts`).
+
+use regex::Regex;
+use std::sync::OnceLock;
+use wasm_bindgen::prelude::*;
+
+fn page_ctx_regex() -> &'static Regex {
+    static RE: OnceLock<Regex> = OnceLock::new();
+    RE.get_or_init(|| {
+        Regex::new(r"[?&]page=/(courses|assessments)/(?:[^/]+/)?(\d+):(\d+)")
+            .expect("page context regex")
+    })
+}
+
+/// JSON `{"programme":n,"metaclass":m}` or `undefined` when the hash does not match.
+#[wasm_bindgen(js_name = parseSeqtaCoursesAssessmentsPageJson)]
+pub fn parse_seqta_courses_assessments_page_json(hash: &str) -> Option<String> {
+    let cap = page_ctx_regex().captures(hash)?;
+    let programme: i32 = cap.get(2)?.as_str().parse().ok()?;
+    let metaclass: i32 = cap.get(3)?.as_str().parse().ok()?;
+    if programme < 0 || metaclass < 0 {
+        return None;
+    }
+    Some(format!(
+        r#"{{"programme":{programme},"metaclass":{metaclass}}}"#
+    ))
+}

wasm/betterseqta-wasm/src/pdf_weight.rs

@@ -0,0 +1,29 @@
+//! PDF text weight extraction (`/weight:\s*(\d+\.?\d*)/i` in assessments average).
+
+use wasm_bindgen::prelude::*;
+
+/// Returns the first `weight:` numeric capture, or `undefined` when absent.
+#[wasm_bindgen(js_name = extractWeightFromPdfText)]
+pub fn extract_weight_from_pdf_text(text: &str) -> Option<String> {
+    let lower: Vec<u8> = text.bytes().map(|b| b.to_ascii_lowercase()).collect();
+    let needle = b"weight:";
+    let bytes = text.as_bytes();
+    let mut i = 0usize;
+    while i + needle.len() <= lower.len() {
+        if lower[i..i + needle.len()] == needle[..] {
+            let mut j = i + needle.len();
+            while j < bytes.len() && bytes[j].is_ascii_whitespace() {
+                j += 1;
+            }
+            let start = j;
+            while j < bytes.len() && (bytes[j].is_ascii_digit() || bytes[j] == b'.') {
+                j += 1;
+            }
+            if j > start {
+                return Some(text[start..j].to_string());
+            }
+        }
+        i += 1;
+    }
+    None
+}

wasm/betterseqta-wasm/src/seqta.rs

@@ -0,0 +1,18 @@
+//! SEQTA page / title detection strings.
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(js_name = childTextHasSeqtaCopyright)]
+pub fn child_text_has_seqta_copyright(text: &str) -> bool {
+    text.contains("Copyright (c) SEQTA Software")
+}
+
+#[wasm_bindgen(js_name = titleIsSeqtaLearnOrEngage)]
+pub fn title_is_seqta_learn_or_engage(title: &str) -> bool {
+    title.contains("SEQTA Learn") || title.contains("SEQTA Engage")
+}
+
+#[wasm_bindgen(js_name = titleIsSeqtaEngage)]
+pub fn title_is_seqta_engage_only(title: &str) -> bool {
+    title.contains("SEQTA Engage")
+}

wasm/betterseqta-wasm/src/threshold.rs

@@ -0,0 +1,62 @@
+//! `GetThresholdOfColor` luminance distance (`sqrt(r²+g²+b²)`), including gradients.
+
+use regex::Regex;
+use std::sync::OnceLock;
+use wasm_bindgen::prelude::*;
+
+fn rgba_capture_regex() -> &'static Regex {
+    static RE: OnceLock<Regex> = OnceLock::new();
+    RE.get_or_init(|| Regex::new(r"(?i)rgba?\(([^)]+)\)").expect("regex"))
+}
+
+fn parse_js_int_channel(s: &str) -> f64 {
+    s.trim().parse::<f64>().ok().map(|n| n.trunc()).unwrap_or(0.0)
+}
+
+fn threshold_from_rgb_triplet(r: f64, g: f64, b: f64) -> f64 {
+    (r * r + g * g + b * b).sqrt()
+}
+
+fn gradient_average_threshold(color: &str) -> Option<f64> {
+    let re = rgba_capture_regex();
+    let mut sums = Vec::new();
+    for cap in re.captures_iter(color) {
+        let inner = cap.get(1)?.as_str();
+        let parts: Vec<&str> = inner.split(',').collect();
+        if parts.len() < 3 {
+            continue;
+        }
+        let r = parse_js_int_channel(parts[0]);
+        let g = parse_js_int_channel(parts[1]);
+        let b = parse_js_int_channel(parts[2]);
+        sums.push(threshold_from_rgb_triplet(r, g, b));
+    }
+    if sums.is_empty() {
+        None
+    } else {
+        Some(sums.iter().sum::<f64>() / sums.len() as f64)
+    }
+}
+
+/// Returns `sqrt(r²+g²+b²)` for a CSS color string, or **`-1`** when the Rust path
+/// cannot match the JS `color` package (caller should fall back to TypeScript).
+#[wasm_bindgen(js_name = colorCssThresholdDistance)]
+pub fn color_css_threshold_distance(color: &str) -> f64 {
+    let color = color.trim();
+    if color.is_empty() {
+        return 0.0;
+    }
+    if color.contains("gradient") {
+        return gradient_average_threshold(color).unwrap_or(-1.0);
+    }
+    match csscolorparser::parse(color) {
+        Ok(c) => {
+            let rgba = c.to_rgba8();
+            let r = f64::from(rgba[0]);
+            let g = f64::from(rgba[1]);
+            let b = f64::from(rgba[2]);
+            threshold_from_rgb_triplet(r, g, b)
+        }
+        Err(_) => -1.0,
+    }
+}

wasm/betterseqta-wasm/src/time_format.rs

@@ -0,0 +1,83 @@
+//! 12-hour timetable formatting (mirrors TS helpers around `convertTo12HourFormat`).
+
+use wasm_bindgen::prelude::*;
+
+/// Mirrors JavaScript `Number(s.trim())` for a single split segment, including `"" -> 0`.
+fn js_number_from_split_segment(part: Option<&str>) -> f64 {
+    let s = part.unwrap_or("");
+    let trimmed = s.trim();
+    if trimmed.is_empty() {
+        return 0.0;
+    }
+    trimmed.parse::<f64>().unwrap_or(f64::NAN)
+}
+
+/// Mirrors `n.toString()` for timetable paths.
+fn js_number_to_string(n: f64) -> String {
+    if n.is_nan() {
+        return "NaN".to_string();
+    }
+    if n == 0.0 && n.is_sign_negative() {
+        return "0".to_string();
+    }
+    if (n - n.round()).abs() < f64::EPSILON {
+        format!("{}", n as i64)
+    } else {
+        format!("{n}")
+    }
+}
+
+/// 1:1 with `convertTo12HourFormat` in `src/seqta/utils/convertTo12HourFormat.ts`.
+#[wasm_bindgen(js_name = convertTo12HourFormat)]
+pub fn convert_to_12_hour_format(time: &str, no_minutes: bool) -> String {
+    let parts: Vec<&str> = time.split(':').collect();
+    let mut hours = js_number_from_split_segment(parts.first().copied());
+    let minutes = js_number_from_split_segment(parts.get(1).copied());
+
+    let mut period = "am";
+    if hours >= 12.0 {
+        period = "pm";
+        if hours > 12.0 {
+            hours -= 12.0;
+        }
+    } else if hours == 0.0 {
+        hours = 12.0;
+    }
+
+    let mut hours_str = js_number_to_string(hours);
+    if hours_str.len() == 2 && hours_str.starts_with('0') {
+        hours_str = hours_str[1..].to_string();
+    }
+
+    let minute_part = if no_minutes {
+        String::new()
+    } else {
+        let m = js_number_to_string(minutes);
+        let m = if m.len() >= 2 { m } else { format!("0{m}") };
+        format!(":{m}")
+    };
+
+    format!("{hours_str}{minute_part}{period}")
+}
+
+/// `convertTo12HourFormat(...).toLowerCase().replace(" ", "")` from `updateTimetableTimes.ts`.
+#[wasm_bindgen(js_name = formatTimetableTimeLabel)]
+pub fn format_timetable_time_label(time: &str, no_minutes: bool) -> String {
+    convert_to_12_hour_format(time, no_minutes)
+        .to_lowercase()
+        .replace(' ', "")
+}
+
+/// Formats a `start–end` / `start-end` range label for timetable rows.
+#[wasm_bindgen(js_name = formatTimetableTimeRange)]
+pub fn format_timetable_time_range(original: &str) -> Option<String> {
+    let mut parts = original
+        .split(|c| c == '-' || c == '\u{2013}')
+        .map(str::trim)
+        .filter(|p| !p.is_empty());
+    let start = parts.next()?;
+    let end = parts.next()?;
+    let start12 = format_timetable_time_label(start, false);
+    let end12 = format_timetable_time_label(end, false);
+    Some(format!("{start12}\u{2013}{end12}"))
+}

wasm/betterseqta-wasm/src/timetable_nav.rs

@@ -0,0 +1,8 @@
+//! Timetable URL/hash checks.
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(js_name = locationHashIncludesTimetablePage)]
+pub fn location_hash_includes_timetable_page(location_hash: &str) -> bool {
+    location_hash.contains("page=/timetable")
+}

wasm/betterseqta-wasm/src/user_agent.rs

@@ -0,0 +1,9 @@
+//! User-agent sniffing (`isFirefox` in assessments average).
+
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen(js_name = isFirefoxUserAgent)]
+pub fn is_firefox_user_agent(user_agent: &str) -> bool {
+    let u = user_agent.to_ascii_lowercase();
+    u.contains("firefox") && !u.contains("seamonkey") && !u.contains("waterfox")
+}