Switch the customer app to IRANSans, restyle home featured/newest and cart note sheet, refresh brand icons across apps, and add the PWA install prompt.
Co-authored-by: Cursor <cursoragent@cursor.com>
First commit of the Hedena Gold product (separate from gold-bank): branding, package names, and deploy defaults aligned to the new brand; legacy Henza trees stay local-only via .gitignore.
