Copy: pare product claims to what we can certify, cut rule-of-three cadence, record arch 10 §10

src/app/components/AboutModal.tsx

@@ -47,9 +47,8 @@ export function AboutModal() {
           v<span className={styles.version}>{__APP_VERSION__}</span>
         </p>
         <p className={styles.body}>
-          A local-first workspace for authoring, organizing, and previewing Vega-Lite charts. Edit
-          JSON, see the chart update live, and keep a personal library of snippets — with no
-          account, no server, and full offline support.
+          A local-first workspace for authoring and organizing Vega-Lite charts. Edit the JSON,
+          watch it render live, and keep a personal library of snippets.
         </p>
       </section>
 
@@ -74,17 +73,18 @@ export function AboutModal() {
       <section className={styles.section}>
         <h3 className={styles.heading}>Privacy</h3>
         <p className={styles.body}>
-          Astrolabe runs entirely in your browser. Your snippets, datasets, and settings are stored
-          locally and never leave your machine.
+          Astrolabe runs in your browser. Your snippets, datasets, and settings are stored locally
+          on your device — there&rsquo;s no server to send them to.
         </p>
         <ul className={styles.list}>
-          <li>No account, no sign-in, no server-side storage.</li>
-          <li>The app runs no analytics or tracking — no cookies, no telemetry, no profiling.</li>
+          <li>No account or sign-in.</li>
           <li>
-            The only outbound network requests are ones you create: URL-sourced datasets you add
-            yourself.
+            The app itself runs no analytics or tracking. Its host (Cloudflare) records standard,
+            aggregate traffic like any web server — not your library or the charts you build, which
+            stay in your browser.
           </li>
-          <li>After the first load, the app works fully offline.</li>
+          <li>The only outbound requests are ones you make: datasets you load from a URL.</li>
+          <li>After the first load, the app works offline.</li>
           <li>
             Use the header&rsquo;s import / export buttons to move your library between devices.
           </li>

src/app/components/Onboarding.tsx

@@ -137,8 +137,8 @@ export function Onboarding() {
       <div className={styles.inner}>
         <h2 className={styles.title}>Welcome to Astrolabe</h2>
         <p className={styles.tagline}>
-          A local library for your Vega-Lite charts — authored as JSON, rendered live, and kept on
-          your device.
+          A local library for your Vega-Lite charts — write the spec as JSON, watch it render live,
+          and keep it all on your device.
         </p>
 
         <div className={styles.ctaRow}>