client: critical bottlenecks: use png instead of vectors for marker The positioning of text is not always precise. The exclamation mark in the warning sign for critical bottlenecks was not always perfectly centered. Using a png image is more reliable.

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

# backend binary
cmd/gemma/gemma

# Dependency directories
**/node_modules

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

# Tags tables
**/TAGS