[BUG] Support missing for timezone selection in dashboard (needs env variable for desired TZ) #59
Description
Describe the bug
Currently, there is no way to select a timezone in the dashboard. All charts display data in the server's default timezone, which leads to confusion for users in different timezones and makes data analysis in local time impossible.
Expected behavior
There should be an option to select a timezone. At minimum, support for a configurable environment variable should be provided to set the desired timezone for the dashboard data visualization, so charts reflect the intended local time.
Additional context
Currently, you must restart the server with different system timezone settings to change chart time references, which is not user-friendly. Introducing either a user selection in the UI or an environment variable (for example: TIMEZONE=UTC) would greatly improve usability and accuracy.