Add new store screenshots and popup. Add preview page (for use in dev…

…elopment for generating said screenshots). Update README.

README.md

@@ -5,7 +5,7 @@
 
 A [Plasmo](https://docs.plasmo.com/) browser extension that automatically instruments webpages with [OpenTelemetry](https://opentelemetry.io/docs/what-is-opentelemetry/).
 
-[Download it](https://chromewebstore.google.com/detail/opentelemetry-browser-ext/bgjeoaohfhbfabbfhbafjihbobjgniag), refresh your pages, and start sending OTLP logs and traces.
+[Download it](https://chromewebstore.google.com/detail/opentelemetry-browser-ext/bgjeoaohfhbfabbfhbafjihbobjgniag), refresh your pages, and start recording OTLP logs and traces in your browser.
 
 ## Preview
 

assets/store/overview.md

@@ -1,7 +1,7 @@
 An extension for instrumenting webpages using OpenTelemetry
 
-Generate trace and capture logs to piece together your frontend and backend problems, without writing all the boilerplate and making your users download more Javascript.
+Generate traces and capture logs to piece together your frontend and backend problems, all without adding any dependencies and making your users download more Javascript.
 
 Free and open-source: https://github.com/tbrockman/opentelemetry-browser-extension
 
-In very early development, if you notice anything is broken please make an issue!
+In early development, if you notice anything is broken please make an issue!

src/tabs/preview.css

@@ -0,0 +1,3 @@
+.popup-container {
+    width: 640px;
+}

src/tabs/preview.tsx

@@ -0,0 +1,7 @@
+import IndexPopup from "~popup"
+
+import '~tabs/preview.css'
+
+export default function PreviewPage() {
+    return process.env.NODE_ENV === 'development' ? <IndexPopup /> : null
+}

src/utils/app-data.ts

@@ -2,6 +2,7 @@ import { getWithDefaults } from "./storage"
 
 import type { Storage } from "@plasmohq/storage"
 
+// TODO: decide what we're going to store as app data for diagnosing telemetry export issues
 export type AppData = {
     lastExportError?: string
     lastExportErrorTimestamp?: number