issue #149

Fixes unit tests

…a designated project will now route to the `events` channel, while project-specific events will be directed to `events.project.<key>` channels.

Implemented automatic subscription of users to relevant channels upon WS connection. Users will now be subscribed to both the general `events` channel and all channels pertaining to projects.

1. Adds events mapper for broadcasting
2. SMTP service refactoring.
3. Improved tests. Use sqlite for tests instead of in-memory.

1. Reduced payload size for preview cards in WS events, optimizing data transmission to clients and HTTP requests for event lists.
2. Resolved issue with event clearing when utilizing the database driver.
3. Addressed sorting inconsistencies with events when utilizing the database driver.

…tion parts.

…he number of frames in the exception.