Add description and polish pipeline Run dialog

[dagood]

• For https://github.com/microsoft/go-lab/issues/434 (run dialog improvements)
• For https://github.com/microsoft/go-lab/issues/435 (fix missing links in pipeline yml to pipelines that use it)

A few changes make the pipeline Run dialogs more usable for devs without full context:

Add an explicit description of what the pipeline is for by including a parameter with only one choice. The radio select is a bit ugly, but some emoji make it blend in a little, and the pipeline filename seems like a reasonable thing to include that makes the line seem less useless/out-of-place:

(This change will also be done in go-infra-images, and that change is really the one that directly addresses the recommendation in the RCA, by making it clear that that pipeline is the wrong one to use for this.)

Also, clarify the parameter display names.

[Copilot]

Pull request overview

Improves Azure DevOps “Run pipeline” UX for this repo’s pipelines by making the run dialog more self-explanatory and adding easy-to-find links back to the corresponding pipeline definitions.

Changes:

• Add an _info runtime parameter (single-choice string) to surface a brief “what this pipeline is for” description in the Run dialog.
• Add “official/unofficial/public” pipeline definition links near the top of relevant pipeline YAMLs.
• Polish several runtime parameter displayName strings to be more imperative and explanatory.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
eng/pipeline/rolling-internal-validation.gen.yml	Adds pipeline definition links and an _info runtime parameter in the generator source.
eng/pipeline/rolling-internal-validation-pipeline.yml	Propagates _info parameter and links into the generated official pipeline YAML.
eng/pipeline/rolling-internal-validation-pipeline-unofficial.yml	Propagates _info parameter and links into the generated unofficial pipeline YAML.
eng/pipeline/go-docker-rolling-internal.gen.yml	Adds pipeline definition links and an _info parameter; updates parameter displayName text in generator source.
eng/pipeline/go-docker-rolling-internal-pipeline.yml	Propagates _info parameter/links and updated display names into the official pipeline YAML.
eng/pipeline/go-docker-rolling-internal-pipeline-unofficial.yml	Propagates _info parameter/links and updated display names into the unofficial pipeline YAML.
eng/pipeline/go-docker-pr-pipeline.yml	Adds standard header and a link to the public pipeline definition.
eng/pipeline/cleanup-acr-images.gen.yml	Adds _info parameter/links; reorders/rewrites runtime parameter displayNames; moves derived-from note near extends.
eng/pipeline/cleanup-acr-images-pipeline.yml	Propagates _info parameter and updated parameter labels into the official pipeline YAML.
eng/pipeline/cleanup-acr-images-pipeline-unofficial.yml	Propagates _info parameter and updated parameter labels into the unofficial pipeline YAML.

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[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.