Foundation Inkfire Login v2.2.3

Changes\n\n- Replaced the oversized background watermark with Inkfire's hero palette.\n- Refined the right-side glass surface while keeping the login form card solid.\n- Corrected the desktop panel seam so the left edge is square against the contact panel; compact layouts retain rounded corners.\n\n## Validation\n\n- Validated on the live Inkfire login screen before release approval.\n- Release validation passed on PHP 7.4 and PHP 8.2.\n- CI-built ZIP integrity and SHA-256 were verified before publication.