Validate temporal validity of gauges on import Since we need the time range to identify gauge versions in the WHERE-clause of the first statement, validate before it touches the database to avoid a quite unspecific error due to invalid range input.

# documentation
**/README*
**/docs
**/*.md

# backend binary
cmd/gemma/gemma

# Dependency directories
**/node_modules

# local dotenv environment variables file
client/.env.local

# Tags tables
**/TAGS