Add job step and group key filter flags

[mitchbne]

Description

Adds --step-key and --group-key server-side filters to bk job list --build. Both filters can be combined, require --build, and are preserved across cursor pages.

This PR uses the support from go-buildkite #347, released in v5.7.0.

Deployment order:

1. Confirm the server-side filters are deployed.
2. Merge this CLI change.

Dependent documentation should publish only after these CLI flags ship.

Testing

• Focused job command tests pass locally (go test ./cmd/job)
• Code is formatted (gofmt via the pre-commit hook)
• Lint passes (golangci-lint via the pre-commit hook)
• Full suite locally hit the unrelated TestSnapshotContext_CancelsPush timing flake; the test passed three isolated runs

Rollback

Revert this PR. The flags are additive and do not change persisted data.

Disclosures / Credits

Amp implemented the tests and CLI changes under human direction.

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	github.com/​buildkite/​go-buildkite/​v5@​v5.3.1 ⏵ v5.7.0	+1

View full report

[mitchbne]

@buildsworth-bk feel free to approve something up to and including L2

[buildsworth-bk-app]

I didn't find any issues. I'm leaving this as a comment rather than an approval because the change adds new server-backed CLI filtering behaviour, which puts it above the default AI approval ceiling.

Want to dig deeper?

The full session log is attached to this Buildkite build. Download the session file and open a new pi session with it:

Download the buildsworth logs from build 5938, then answer my questions about the findings.