rebrand: apply full MERLx Aperture identity per design spec
KSvend+2: Claude, Happy
73b5679
Updates all user-facing copy (landing page, PDF reports, emails, README)
and backend metadata to use "MERLx Aperture" branding consistently,
per the approved 2026-03-26 rebrand design specification.
Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)
Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>
Initial commit: Aperture platform (extracted from SR4S)
