fix: Re-enable PurgeCSS This commit undoes d025e1f5e71d. PurgeCSS was deactivated, because logs did not highlight properly. Because of the strict timeline it seemed to be best, to deactivate PurgeCSS. PurgeCSS stripped hljs CSS because of how PurgeCSS works: As long as there are no references in your codebase, CSS is stripped. To prevent PurgeCSS from stripping, magically appearing CSS has to be referenced in the Code somewhere. Here: In the according section where the highlighted code appears. PurgeCSS works fully the way expected. Caveat für magically appearing styles.

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

# backend binary
cmd/gemma/gemma

# Dependency directories
**/node_modules

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

# Tags tables
**/TAGS