Fix crxjs dev service worker crashes after Vite upgrade.

Downgrade to Vite 6 with crxjs 2.6, add dev-only CSP for HMR, and stop the background script from importing Svelte plugin UI into the service worker.

package.json

@@ -42,7 +42,7 @@
     "@babel/plugin-transform-runtime": "^7.26.9",
     "@babel/runtime": "^7.26.9",
     "@bedframe/cli": "^0.1.2",
-    "@crxjs/vite-plugin": "^2.4.0",
+    "@crxjs/vite-plugin": "^2.6.1",
     "@types/d3-scale": "^4.0.9",
     "@types/d3-shape": "^3.1.8",
     "@types/jest": "^30.0.0",
@@ -77,7 +77,7 @@
     "@codemirror/search": "^6.5.10",
     "@codemirror/state": "^6.5.2",
     "@codemirror/view": "^6.36.4",
-    "@sveltejs/vite-plugin-svelte": "^7.0.0",
+    "@sveltejs/vite-plugin-svelte": "^5.0.3",
     "@tailwindcss/forms": "^0.5.10",
     "@tsconfig/svelte": "^5.0.4",
     "@types/chrome": "^0.1.4",
@@ -122,7 +122,7 @@
     "svelte": "^5.46.4",
     "typescript": "^5.8.2",
     "uuid": "^11.1.0",
-    "vite": "^8.0.5",
+    "vite": "^6.2.1",
     "webextension-polyfill": "^0.12.0"
   }
 }

src/plugins/syncablePluginDefaults.ts

@@ -0,0 +1,41 @@
+/**
+ * Serializable plugin setting defaults for cloud sync backfill.
+ *
+ * Kept separate from `@/plugins` so the service worker never imports Svelte UI or
+ * Vite HMR clients. Values must match each plugin's non-component settings.
+ */
+function defaultSearchHotkey(): string {
+  if (typeof navigator !== "undefined") {
+    return navigator.platform.toUpperCase().includes("MAC") ? "cmd+k" : "ctrl+k";
+  }
+  return "ctrl+k";
+}
+
+/** `plugin.<id>.settings` defaults (component/button keys omitted). */
+export const SYNCABLE_PLUGIN_SETTING_DEFAULTS: Record<
+  string,
+  Record<string, unknown>
+> = {
+  themes: {},
+  "animated-background": { speed: 1 },
+  "assessments-average": { lettergrade: false },
+  notificationCollector: {},
+  timetable: {},
+  timetableEdit: {},
+  "profile-picture": { useCloudPfp: false },
+  "assessments-overview": {},
+  "background-music": { volume: 0.5, pauseOnHidden: true },
+  messageFolders: {
+    showTagsInAllMessages: true,
+    hideFolderedMessagesInAll: true,
+  },
+  "enhanced-navigation": { autoScrollOnClick: false },
+  "global-search": {
+    searchHotkey: defaultSearchHotkey(),
+    showRecentFirst: true,
+    transparencyEffects: true,
+    runIndexingOnLoad: true,
+    passiveIndexing: true,
+  },
+  "grade-analytics": { cacheTtlHours: 24 },
+};

src/seqta/utils/ensureSyncableStorageDefaults.ts

@@ -1,5 +1,5 @@
 import browser from "webextension-polyfill";
-import { getAllPluginSettings } from "@/plugins";
+import { SYNCABLE_PLUGIN_SETTING_DEFAULTS } from "@/plugins/syncablePluginDefaults";
 import { getDefaultSettingsState } from "@/seqta/utils/defaultSettings";
 import {
   isKeyIncludedInCloudUploadPayload,
@@ -38,18 +38,6 @@ const OPTIONAL_UNSET_MEANS_DEFAULT_KEYS = [
   "profile_picture_revision",
 ] as const;
 
-function buildDefaultPluginSettings(
-  plugin: ReturnType<typeof getAllPluginSettings>[number],
-): Record<string, unknown> {
-  const out: Record<string, unknown> = {};
-  for (const [key, setting] of Object.entries(plugin.settings)) {
-    const meta = setting as { type?: string; default?: unknown };
-    if (meta.type === "component" || meta.type === "button") continue;
-    out[key] = meta.default;
-  }
-  return out;
-}
-
 /**
  * Flat default map in upload shape (plugin-format only; no legacy keys).
  */
@@ -65,9 +53,10 @@ export function getSyncableStorageDefaults(): Record<string, unknown> {
     delete flat[key];
   }
 
-  for (const plugin of getAllPluginSettings()) {
-    flat[`plugin.${plugin.pluginId}.settings`] =
-      buildDefaultPluginSettings(plugin);
+  for (const [pluginId, settings] of Object.entries(
+    SYNCABLE_PLUGIN_SETTING_DEFAULTS,
+  )) {
+    flat[`plugin.${pluginId}.settings`] = settings;
   }
 
   return flat;

vite.config.ts

@@ -4,7 +4,7 @@ import { join, resolve } from "path";
 import touchGlobalCSSPlugin from "./lib/touchGlobalCSS";
 import InlineWorkerPlugin from "./lib/inlineWorker";
 import { base64Loader } from "./lib/base64loader";
-import type { BuildTarget } from "./lib/types";
+import type { BuildTarget, Manifest } from "./lib/types";
 import ClosePlugin from "./lib/closePlugin";
 import { firefoxStripFunctionProbe } from "./lib/firefoxStripFunctionProbe";
 
@@ -22,6 +22,37 @@ import { crx } from "@crxjs/vite-plugin";
 
 const targets: BuildTarget[] = [chrome, brave, edge, firefox, opera, safari];
 
+const DEV_SERVER_PORT = 5173;
+
+/** Vite HMR needs localhost script + ws origins; only applied during `vite dev`. */
+function withDevManifestCsp(manifest: Manifest, command: string): Manifest {
+  if (command !== "serve") return manifest;
+
+  const extensionPages = manifest.content_security_policy?.extension_pages;
+  if (!extensionPages) return manifest;
+
+  const localhost = `http://localhost:${DEV_SERVER_PORT}`;
+  const localhostWs = `ws://localhost:${DEV_SERVER_PORT}`;
+  const loopback = `http://127.0.0.1:${DEV_SERVER_PORT}`;
+  const loopbackWs = `ws://127.0.0.1:${DEV_SERVER_PORT}`;
+
+  return {
+    ...manifest,
+    content_security_policy: {
+      ...manifest.content_security_policy,
+      extension_pages: extensionPages
+        .replace(
+          "script-src 'self'",
+          `script-src 'self' ${localhost} ${loopback}`,
+        )
+        .replace(
+          /connect-src ([^;]+)/,
+          `connect-src $1 ${localhost} ${localhostWs} ${loopback} ${loopbackWs}`,
+        ),
+    },
+  };
+}
+
 const mode = process.env.MODE || "chrome"; // Check the environment variable to determine which build type to use.
 //const sourcemap = (process.env.SOURCEMAP === "true") || false; // Check whether we want sourcemaps.
 /** Million's compiler can emit `new Function()`, which Firefox extension pages block (strict CSP, no unsafe-eval). */
@@ -46,9 +77,11 @@ export default defineConfig(({ command }) => ({
     }),
     ...(useMillion ? [million.vite({ auto: true })] : []),
     crx({
-      manifest:
+      manifest: withDevManifestCsp(
         targets.find((t) => t.browser === mode.toLowerCase())?.manifest ??
           chrome.manifest,
+        command,
+      ),
       browser: mode.toLowerCase() === "firefox" ? "firefox" : "chrome",
     }),
     touchGlobalCSSPlugin(),
@@ -61,11 +94,12 @@ export default defineConfig(({ command }) => ({
     },
   },
   server: {
-    port: 5173,
+    port: DEV_SERVER_PORT,
+    strictPort: true,
     hmr: {
       host: "localhost",
       protocol: "ws",
-      port: 5173,
+      port: DEV_SERVER_PORT,
     },
   },
   css: {