docs: add memory tracking documentation and update README instructions

See merge request !13

feat(transactions): add transaction management and receipt uploads

See merge request !12

feat(categories): add category management

See merge request !11

feat(wallet): add wallet management API and migration

See merge request !10

refactor(prisma): improve wallet management schema

See merge request !9

feat(auth): implement unrecognized device warning and session management

See merge request !8

security: make trust proxy and CORS origins configurable

See merge request !7

fix: implement MailService and configuration for email notifications

See merge request !5

feat(auth): implement social login support, forgot password, email...

See merge request !3

feat: add Swagger configuration and API documentation schemas for authentication and user management

feat(auth): implement social login support, forgot password, email verification, soft delete, and HttpOnly cookies

# Conflicts:
#   README.md

chore: remove crawler-related files and library dependencies, set up intern management database schema