feat: support structured JSON/YAML output for bulk delete operations

[arvindk-softwaredev]

Part of #2850

Changes

Extend -o json/yaml support to bulk delete --all scenarios across task, pipeline,
pipelinerun, eventlistener, triggerbinding, triggertemplate, and
clustertriggerbinding delete commands.

TaskRun is excluded (covered by #3086).

The bulk delete result is returned as machine-readable output.
-o json/-o yaml skips the confirmation prompt (same as -f) so the
command can run non-interactively.

Example:

$ tkn pipelinerun delete --all -n ns -o json
{
    "deleted": [
        "foo1",
        "bar2"
    ]
}

$ tkn pipelinerun delete --all -n ns -o yaml
deleted:
- foo1
- bar2

Above output structure is the same for all resources.

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• Includes tests (if functionality changed/added)
• Run the code checkers with make check
• Regenerate the manpages, docs and go formatting with make generated
• Commit messages follow commit message best practices

See the contribution guide
for more details.

Release Notes

Add --output json/yaml support for bulk delete commands with --all flag across
task, pipeline, pipelinerun, eventlistener,
triggerbinding, triggertemplate, and clustertriggerbinding.
Using -o skips the confirmation prompt.

[tekton-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
To complete the pull request process, please assign vinamra28 after the PR has been reviewed.
You can assign the PR to them by writing /assign @vinamra28 in a comment when ready.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[arvindk-softwaredev]

Note : This PR extends support for -o json/yaml for the bulk delete on top of PR for delete command - #3318

Hence this contains multiple commits, which will be rebased after #3318 is merged

This PR is rebased with main

[arvindk-softwaredev]

/retest

[arvindk-softwaredev]

/retest

[divyansh42]

/retest

[divyansh42]

/retest

[Copilot]

🟡 Changes recommended

PipelineRun retention can bypass structured output, and the release note incorrectly claims CustomRun bulk support.

2 open findings

• Keep early returns emit non-JSON output · New
• Release note claims unsupported CustomRun bulk deletion · New

What changed in this PR

Extends machine-readable JSON/YAML output to bulk delete operations across Tekton CLI resources.

Changes:

• Enables structured output for bulk deletion and skips confirmation prompts.
• Adds coverage for JSON/YAML output, selectors, retention, and partial failures.
• Regenerates command and manpage documentation.

File	Description
pkg/​cmd/​triggertemplate/​delete.go	Enables structured bulk-delete output.
pkg/​cmd/​triggertemplate/​delete_test.go	Tests JSON/YAML bulk deletion.
pkg/​cmd/​triggerbinding/​delete.go	Enables structured bulk-delete output.
pkg/​cmd/​triggerbinding/​delete_test.go	Tests JSON/YAML bulk deletion.
pkg/​cmd/​task/​delete.go	Adds structured --all results.
pkg/​cmd/​task/​delete_test.go	Tests Task bulk output and validation.
pkg/​cmd/​pipelinerun/​delete.go	Adds structured bulk and filtered results.
pkg/​cmd/​pipelinerun/​delete_test.go	Tests bulk, retention, selectors, and failures.
pkg/​cmd/​pipeline/​delete.go	Adds structured --all results.
pkg/​cmd/​pipeline/​delete_test.go	Tests output, validation, and partial failures.
pkg/​cmd/​eventlistener/​delete.go	Enables structured bulk-delete output.
pkg/​cmd/​eventlistener/​delete_test.go	Tests JSON/YAML bulk deletion.
pkg/​cmd/​clustertriggerbinding/​delete.go	Enables cluster-wide structured deletion.
pkg/​cmd/​clustertriggerbinding/​delete_test.go	Tests JSON/YAML bulk deletion.
docs/​man/​man1/​tkn-triggertemplate-delete.1	Documents bulk structured output.
docs/​man/​man1/​tkn-triggerbinding-delete.1	Documents bulk structured output.
docs/​man/​man1/​tkn-task-delete.1	Documents bulk and related output.
docs/​man/​man1/​tkn-pipelinerun-delete.1	Documents bulk and filtered output.
docs/​man/​man1/​tkn-pipeline-delete.1	Documents bulk and related output.
docs/​man/​man1/​tkn-eventlistener-delete.1	Documents bulk structured output.
docs/​man/​man1/​tkn-clustertriggerbinding-delete.1	Documents cluster-wide output.
docs/​cmd/​tkn_triggertemplate_delete.md	Updates command examples.
docs/​cmd/​tkn_triggerbinding_delete.md	Updates command examples.
docs/​cmd/​tkn_task_delete.md	Updates command examples.
docs/​cmd/​tkn_pipelinerun_delete.md	Updates command examples.
docs/​cmd/​tkn_pipeline_delete.md	Updates command examples.
docs/​cmd/​tkn_eventlistener_delete.md	Updates command examples.
docs/​cmd/​tkn_clustertriggerbinding_delete.md	Updates command examples.

🧠 Review effort: Balanced

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[divyansh42]

/retest

[Copilot]

🟢 Approval recommended

The implementation consistently emits structured successful-deletion results and includes comprehensive regression coverage and generated documentation.

0 open findings

2 resolved since last review

• Keep early returns emit non-JSON output
• Release note claims unsupported CustomRun bulk deletion

🧠 Review effort: Balanced