ci: add concurrency group to cancel stale PR runs

[chubes4]

Summary

• Adds concurrency group keyed by PR number (or ref for non-PR events)
• cancel-in-progress only on PR events — push-to-main runs are serialized but not cancelled
• Prevents wasted CI minutes when pushing rapid commits to a PR

[homeboy-ci]

Homeboy Results — data-machine-events

Homeboy

Failure Digest

Lint Failure Digest

• No structured lint details available.
• Full lint log: https://github.com/Extra-Chill/data-machine-events/actions/runs/23457359184

Test Failure Digest

• Failed tests: 0
• No structured test failure details available.
• Full test log: https://github.com/Extra-Chill/data-machine-events/actions/runs/23457359184

Audit Failure Digest

• Drift increased: no
• No structured audit findings available.
• Full audit log: https://github.com/Extra-Chill/data-machine-events/actions/runs/23457359184

Autofixability classification

• Overall: auto_fixable
• Autofix enabled: yes
• Autofix attempted this run: no
• Auto-fixable failed commands:
  • lint
• Failed commands with available automated fixes:
  • lint

Machine-readable artifacts

• homeboy-lint-summary.json
• homeboy-test-failures.json
• homeboy-audit-summary.json
• homeboy-autofixability.json

⚡ Scope: changed files only

✅ audit (changed files only)

• Drift increased: no

❌ lint (changed files only)

✅ test (changed files only)

• Failed tests: 0

Tooling versions

• Homeboy CLI: homeboy 0.85.3+b3fa312
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: unknown
• Action: Extra-Chill/homeboy-action@v2

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Homeboy Action v1