copy: clarify example graph and navigation

app/App.tsx

@@ -18,7 +18,7 @@ export function App() {
         meta: {
           title: 'RevMind | architecture from your knowledge graph',
           description:
-            'RevMind — architecture from your knowledge graph. A RevealFleet product. Not a public Architecture SKU.',
+            'Explore an example knowledge graph and its relationships. RevMind displays demonstration data.',
         },
       },
       {

app/lib/__tests__/honesty.test.ts

@@ -9,8 +9,8 @@ describe('RevMind honesty', () => {
   });
 
   it('refuses a public Architecture SKU', () => {
-    expect(DIAGRAM_HONESTY).toContain('architecture from your knowledge graph');
-    expect(DIAGRAM_HONESTY).toContain('not a public Architecture SKU');
+    expect(DIAGRAM_HONESTY).toContain('example knowledge graph');
+    expect(DIAGRAM_HONESTY).toContain('demonstration data');
   });
 
   it('ships a demo snapshot with named nodes', () => {

app/lib/honesty.ts

@@ -1,6 +1,6 @@
 /** Safe honesty line — RevMind is not a public Architecture SKU. */
 export const DIAGRAM_HONESTY =
-  'architecture from your knowledge graph; not a public Architecture SKU' as const;
+  'Explore an example knowledge graph and the relationships it contains. This view uses demonstration data.' as const;
 
 export const PRODUCT_NAME = 'RevMind' as const;
 

app/routes/HomePage.tsx

@@ -13,7 +13,7 @@ export function HomePage() {
         <p className="max-w-2xl text-base text-muted-foreground">{DIAGRAM_HONESTY}</p>
       </div>
       <div className="rounded-xl border border-border bg-card p-4 sm:p-6">
-        <h2 className="mb-4 text-sm font-medium text-foreground">Demo graph</h2>
+        <h2 className="mb-4 text-sm font-medium text-foreground">Example graph</h2>
         <GraphCanvas snapshot={DEMO_SNAPSHOT} />
       </div>
     </section>

app/routes/NotFoundPage.tsx

@@ -6,13 +6,13 @@ export function NotFoundPage() {
       <div className="text-center">
         <p className="text-sm font-semibold uppercase tracking-widest text-primary">404</p>
         <h1 className="mt-2 text-3xl font-bold tracking-tight text-foreground sm:text-4xl">
-          Page not found
+          This page isn't available.
         </h1>
         <p className="mt-4 max-w-md text-base text-muted-foreground">
-          The page you are looking for is not here.
+          Return to the example graph to continue exploring.
         </p>
         <div className="mt-8 flex items-center justify-center">
-          <LinkButton href="/">Return home</LinkButton>
+          <LinkButton href="/">Return to the example graph</LinkButton>
         </div>
       </div>
     </section>

app/routes/__tests__/NotFoundPage.test.tsx

@@ -17,7 +17,12 @@ function renderApp(path: string) {
 describe('NotFoundPage', () => {
   it('renders a 404 heading for unknown paths', () => {
     renderApp('/does-not-exist');
-    expect(screen.getByRole('heading', { level: 1, name: 'Page not found' })).toBeInTheDocument();
-    expect(screen.getByRole('link', { name: 'Return home' })).toHaveAttribute('href', '/');
+    expect(
+      screen.getByRole('heading', { level: 1, name: "This page isn't available." }),
+    ).toBeInTheDocument();
+    expect(screen.getByRole('link', { name: 'Return to the example graph' })).toHaveAttribute(
+      'href',
+      '/',
+    );
   });
 });