Gevals evaluation report generation failing on CI

[manusa]

Description

Scheduled Gevals pipeline run seems to have failed at the results summarizing step:

https://github.com/containers/kubernetes-mcp-server/actions/runs/19817243843/job/56771195878

=== Evaluation Results ===
awk: cmd. line:1: BEGIN {printf "%.4f", total > 0 ? passed / total : 0}
awk: cmd. line:1:                                 ^ syntax error
Results file: gevals-openai-agent-kubernetes-test-out.json

[Cali0707]

I'll look into this one