Expand API documentation

Expand deployment instructions

Fix requirements file encoding

Prepare deployment configuration

Add Google OAuth2 authentication setup

Add Celery appointment reminder task

Add MailHog email notifications

Add Sentry configuration and type hints

Frontend LR10: finalize accessibility page

Frontend LR10: update static page accessibility

create .gitverse/workflows/html_js.yaml

Frontend LR10: add static accessibility page

Frontend LR10: improve homepage accessibility

LR10: configure admin export for post and comment

LR9: improve print layout for post detail page

LR9: improve sidebar navigation

LR9: restrict post edit and delete to author

LR9: improve post detail page layout