fix: add SC2059 to shellcheck disable in evals PR comment step

The SC2086 disable only covered the first command — the `for f in $RESULTS`
loop and printf-style string building triggered SC2086 and SC2059 warnings.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/evals.yml

@@ -149,7 +149,7 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          # shellcheck disable=SC2086
+          # shellcheck disable=SC2086,SC2059
           RESULTS=$(find /tmp/eval-results -name '*.json' 2>/dev/null | sort)
           if [ -z "$RESULTS" ]; then
             echo "No eval results found"