feat: add limits to recordings on destop (#291)

* feat: add limits to recordings on destop

* code review

js/desktop/src/lib/constants.ts

@@ -4,6 +4,12 @@ export const MAX_ATTACHMENT_SIZE_BYTES = 25 * 1024 * 1024;
 /** Maximum number of file attachments per particle. */
 export const MAX_ATTACHMENTS = 10;
 
+/** Maximum duration for a media (audio/video) recording, in seconds. */
+export const RECORDING_MAX_DURATION_SECONDS = 60;
+
+/** When this many seconds or fewer remain, show the red warning state. */
+export const RECORDING_WARNING_SECONDS = 10;
+
 export const SUPPORT_EMAIL = '[email protected]';
 
 export const PRIVACY_URL = 'https://flowylabs.ai/llink/privacy';