master
fix: revert fallback host back to greenid.ru; rewrite readme for partners
fix: restore window.createSberidSDK after the real core script clobbers it
init
test: add Playwright e2e suite for the partner demo app
chore: add root .gitignore, commit plan+spec docs for partner demo work
feat: auto-preload SDK core on script load; add createSberidSDK.preload()