chore: prepare extension for Chrome Web Store submission

- Fix description: include Perplexity, 100% local message, 128-char limit
- Remove unused 'cookies' permission (CWS rejects unnecessary sensitive perms)
- Remove dead getCookie helper (no caller; matched the permission removal)
- Open welcome page (migrate.hacklm.dev/aichatbackup/welcome) on fresh install
- Fix all UI copy that omitted Perplexity (popup hint, options empty state)
- Add scripts/zip.mjs: packages dist/ into CWS-ready ZIP via PowerShell
- Add 'zip' and 'build:zip' npm scripts
- Gitignore dist.pem (extension signing key)

Author: vchan-in

.gitignore

@@ -7,3 +7,4 @@ dist/
 
 *storybook.log
 storybook-static
+dist.pem

package.json

@@ -7,7 +7,9 @@
     "dev": "vite",
     "build": "tsc && vite build",
     "preview": "vite preview",
-    "gen-icons": "node scripts/gen-icons.mjs"
+    "gen-icons": "node scripts/gen-icons.mjs",
+    "zip": "node scripts/zip.mjs",
+    "build:zip": "npm run build && npm run zip"
   },
   "keywords": [
     "chrome-extension",

scripts/zip.mjs

@@ -0,0 +1,62 @@
+/**
+ * scripts/zip.mjs
+ *
+ * Packages the dist/ folder into a Chrome Web Store–ready ZIP.
+ * Output: dist-zip/ai-chat-backup-<version>.zip
+ *
+ * Usage:
+ *   node scripts/zip.mjs
+ *   npm run zip          (after adding "zip" to package.json scripts)
+ */
+
+import { execSync } from "node:child_process";
+import fs from "node:fs";
+import path from "node:path";
+import { createReadStream, createWriteStream } from "node:fs";
+import { pipeline } from "node:stream/promises";
+
+const __dirname = path.dirname(new URL(import.meta.url).pathname.replace(/^\/([A-Za-z]:)/, "$1"));
+const root = path.resolve(__dirname, "..");
+const distDir = path.join(root, "dist");
+const outDir = path.join(root, "dist-zip");
+
+/* ── read version from built manifest.json ────────────────── */
+const manifestPath = path.join(distDir, "manifest.json");
+if (!fs.existsSync(manifestPath)) {
+  console.error("ERROR: dist/manifest.json not found. Run `npm run build` first.");
+  process.exit(1);
+}
+const { version } = JSON.parse(fs.readFileSync(manifestPath, "utf8"));
+
+/* ── ensure output dir ────────────────────────────────────── */
+if (!fs.existsSync(outDir)) fs.mkdirSync(outDir, { recursive: true });
+
+const zipName = `ai-chat-backup-${version}.zip`;
+const zipPath = path.join(outDir, zipName);
+
+/* ── remove stale zip ─────────────────────────────────────── */
+if (fs.existsSync(zipPath)) fs.rmSync(zipPath);
+
+/* ── zip using platform tools ─────────────────────────────── */
+const isWindows = process.platform === "win32";
+
+try {
+  if (isWindows) {
+    // PowerShell 5+ Compress-Archive (available on all modern Windows)
+    const distEscaped = distDir.replace(/'/g, "''");
+    const zipEscaped = zipPath.replace(/'/g, "''");
+    execSync(
+      `powershell -NoProfile -Command "Compress-Archive -Path '${distEscaped}\\*' -DestinationPath '${zipEscaped}' -Force"`,
+      { stdio: "inherit" }
+    );
+  } else {
+    // Unix: zip -r
+    execSync(`zip -r "${zipPath}" .`, { cwd: distDir, stdio: "inherit" });
+  }
+
+  console.log(`\nPackaged: dist-zip/${zipName}`);
+  console.log(`Upload this file at: https://chrome.google.com/webstore/developer/dashboard\n`);
+} catch (err) {
+  console.error("Packaging failed:", err.message);
+  process.exit(1);
+}

src/background/index.ts

@@ -18,7 +18,10 @@ import { generateSeedPrompt } from "../utils/seeder";
 
 /* ── install / uninstall lifecycle ───────────────────────── */
 
-chrome.runtime.onInstalled.addListener(() => {
+chrome.runtime.onInstalled.addListener((details) => {
+  if (details.reason === chrome.runtime.OnInstalledReason.INSTALL) {
+    chrome.tabs.create({ url: "https://migrate.hacklm.dev/aichatbackup/welcome" });
+  }
   chrome.runtime.setUninstallURL(
     "https://docs.google.com/forms/d/e/1FAIpQLSfWyb7DJUjVJLzRTWwV208JI4dqLGPjoExx7uJNBsPeT2_4lA/viewform?usp=pp_url&entry.1264997455=AI+Chat+Backup"
   );

src/manifest.ts

@@ -5,13 +5,13 @@ const manifest: ManifestV3Export = {
   name: "AI Chat Backup",
   version: "0.1.0",
   description:
-    "Back up your AI chat history from ChatGPT, Claude, Gemini & Grok and continue conversations anywhere.",
+    "Save AI chats from ChatGPT, Claude, Gemini, Grok & Perplexity. Browse, search, and resume them. 100% local — no server, no sync.",
   icons: {
     "16": "icons/icon16.png",
     "48": "icons/icon48.png",
     "128": "icons/icon128.png",
   },
-  permissions: ["storage", "unlimitedStorage", "cookies", "activeTab"],
+  permissions: ["storage", "unlimitedStorage", "activeTab"],
   host_permissions: [
     "https://chatgpt.com/*",
     "https://chat.openai.com/*",

src/options/App.tsx

@@ -385,7 +385,7 @@ export default function App() {
               <Inbox size={36} className="mx-auto mb-4 text-faint" strokeWidth={1.5} />
               <p className="text-lg font-medium">Select a chat to view</p>
               <p className="text-sm font-mono mt-2 text-faint">
-                Save chats from ChatGPT, Claude, Gemini, or Grok
+                Save chats from ChatGPT, Claude, Gemini, Grok, or Perplexity
               </p>
             </div>
 

src/popup/App.tsx

@@ -112,7 +112,7 @@ export default function App() {
       </button>
 
       <p className="text-[10px] text-faint text-center">
-        Visit ChatGPT, Claude, Gemini, or Grok to save chats.
+        Visit ChatGPT, Claude, Gemini, Grok, or Perplexity to save chats.
       </p>
 
       <div className="flex justify-between items-center w-full px-2">

src/utils/helpers.ts

@@ -8,15 +8,6 @@ export function sleep(ms: number): Promise<void> {
   return new Promise((resolve) => setTimeout(resolve, ms));
 }
 
-/** Get a cookie value for a given URL + name via chrome.cookies API. */
-export async function getCookie(
-  url: string,
-  name: string
-): Promise<string | undefined> {
-  const cookie = await chrome.cookies.get({ url, name });
-  return cookie?.value;
-}
-
 /** Jittered delay between min and max ms. */
 export function jitteredDelay(min: number, max: number): Promise<void> {
   const ms = min + Math.random() * (max - min);