🧑‍💻 Allow for custom 404 system messages

apps/docs/self-hosting/configuration.mdx

@@ -312,3 +312,12 @@ The related environment variables are listed here but you are probably not inter
 | NEXT_PUBLIC_POSTHOG_HOST | https://app.posthog.com | PostHog API Host |
 
 </Accordion>
+
+<Accordion title="System labels">
+
+| Parameter                       | Default                                  | Description |
+| ------------------------------- | ---------------------------------------- | ----------- |
+| NEXT_PUBLIC_VIEWER_404_TITLE    | 404                                      |             |
+| NEXT_PUBLIC_VIEWER_404_SUBTITLE | The bot you're looking for doesn't exist |             |
+
+</Accordion>

apps/viewer/src/components/NotFoundPage.tsx

@@ -1,3 +1,5 @@
+import { env } from '@typebot.io/env'
+
 export const NotFoundPage = () => (
   <div
     style={{
@@ -8,7 +10,9 @@ export const NotFoundPage = () => (
       flexDirection: 'column',
     }}
   >
-    <h1 style={{ fontWeight: 'bold', fontSize: '30px' }}>404</h1>
-    <h2>The bot you&apos;re looking for doesn&apos;t exist</h2>
+    <h1 style={{ fontWeight: 'bold', fontSize: '30px' }}>
+      {env.NEXT_PUBLIC_VIEWER_404_TITLE}
+    </h1>
+    <h2>{env.NEXT_PUBLIC_VIEWER_404_SUBTITLE}</h2>
   </div>
 )

packages/env/env.ts

@@ -99,6 +99,11 @@ const baseEnv = {
     ),
     NEXT_PUBLIC_ONBOARDING_TYPEBOT_ID: z.string().min(1).optional(),
     NEXT_PUBLIC_BOT_FILE_UPLOAD_MAX_SIZE: z.coerce.number().optional(),
+    NEXT_PUBLIC_VIEWER_404_TITLE: z.string().optional().default('404'),
+    NEXT_PUBLIC_VIEWER_404_SUBTITLE: z
+      .string()
+      .optional()
+      .default("The bot you're looking for doesn't exist"),
   },
   runtimeEnv: {
     NEXT_PUBLIC_E2E_TEST: getRuntimeVariable('NEXT_PUBLIC_E2E_TEST'),
@@ -109,6 +114,12 @@ const baseEnv = {
     NEXT_PUBLIC_BOT_FILE_UPLOAD_MAX_SIZE: getRuntimeVariable(
       'NEXT_PUBLIC_BOT_FILE_UPLOAD_MAX_SIZE'
     ),
+    NEXT_PUBLIC_VIEWER_404_TITLE: getRuntimeVariable(
+      'NEXT_PUBLIC_VIEWER_404_TITLE'
+    ),
+    NEXT_PUBLIC_VIEWER_404_SUBTITLE: getRuntimeVariable(
+      'NEXT_PUBLIC_VIEWER_404_SUBTITLE'
+    ),
   },
 }
 const githubEnv = {