fix: benchmark.yml fails because tmp/ directory doesn't exist in CI

[endavis]

Bug Description

The benchmark.yml workflow fails in CI because the tmp/ directory doesn't exist on the GitHub Actions runner. The step writes --benchmark-json=tmp/benchmark-results.json but never creates the directory first.

Steps to Reproduce

1. Have benchmark.yml workflow trigger on a push or PR
2. The "Run benchmarks" step fails with:

   pytest: error: argument --benchmark-json: can't open 'tmp/benchmark-results.json': [Errno 2] No such file or directory: 'tmp/benchmark-results.json'
   

Expected vs Actual Behavior

Expected: Benchmarks run and results are written to tmp/benchmark-results.json

Actual: pytest exits with code 4 because it can't open the output file (parent directory doesn't exist)

Proposed Fix

Add mkdir -p tmp before running pytest in the "Run benchmarks" step:

      - name: Run benchmarks
        run: |
          mkdir -p tmp
          uv run pytest tests/benchmarks/ \
            --benchmark-enable --benchmark-only \
            --benchmark-json=tmp/benchmark-results.json -v

Context

Found during InfraFoundry sync with pyproject-template (endavis/infrafoundry#284). Fixed downstream in endavis/infrafoundry#285.

[endavis]

Implementation Plan for #302: fix: benchmark.yml fails because tmp/ directory doesn't exist in CI

Context

The benchmark.yml workflow writes to tmp/benchmark-results.json but never creates the tmp/ directory. This works locally (where tmp/ exists via .gitkeep) but fails in CI on a fresh checkout.

Overview

Add mkdir -p tmp before the pytest command in the "Run benchmarks" step.

Files to Modify

• .github/workflows/benchmark.yml:42-46 — Change the "Run benchmarks" step to create tmp/ before running pytest

Test Plan

• No unit tests needed (CI workflow change)
• doit check passes
• CI benchmark workflow passes on the PR itself

Documentation

• No docs to update
• ADR needed: no

Validation

• doit check passes
• PR CI includes a successful benchmark run

[endavis]

Addressed in PR #323