Revert "update ViaQ/vector labels to allow squash merge (#78874)"

[redhat-chai-bot]

This reverts commit f9c07a7.

Why

PR #78874 added a repo-specific tide/merge-method-squash label for ViaQ/vector in the repos: section of _labels.yaml. This label is already defined in the default: section (which applies to all repos), causing a duplicate that the label-sync tool rejects during config validation:

invalid config: duplicate label tide/merge-method-squash at ViaQ/vector.tide/merge-method-squash and default.tide/merge-method-squash

The periodic-label-sync job has been failing every week since January 21, 2026, preventing label syncing for ALL configured orgs (openshift, openshift-eng, openshift-priv, etc.).

What this does

Reverts the addition of the ViaQ/vector repo-specific entry. The tide/merge-method-squash label remains available on ViaQ/vector (and all other repos) via the default configuration — the original intent of PR #78874 is fully preserved.

Replaces #79264 (which was a manual edit rather than a proper revert).

/cc @jcantrill

Revert of duplicate label configuration for ViaQ/vector

This PR reverts a change from PR #78874 that added a repository-specific tide/merge-method-squash label configuration for the ViaQ/vector repository. The label already exists in the default configuration section, creating a duplicate-label validation error that caused the label-sync tool to reject the entire configuration.

Impact on CI infrastructure:

• Fixes failing periodic sync job: The weekly periodic-label-sync job has been failing since January 21, 2026, due to the duplicate label validation error. This revert restores the job's ability to sync Prow labels across all configured organizations.
• Preserves label availability: The tide/merge-method-squash label remains available for ViaQ/vector through the default configuration, maintaining the original intent of enabling squash merge behavior for this repository.

Changes:

• Removes the ViaQ/vector repository-specific label configuration block (7 lines) from core-services/prow/02_config/_labels.yaml

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository YAML (base), Central YAML (inherited)

Review profile: CHILL

Plan: Enterprise

Run ID: af424d03-d747-42fd-a770-86e67b048454

📥 Commits

Reviewing files that changed from the base of the PR and between 910a89c and bbdf630.

📒 Files selected for processing (1)

• core-services/prow/02_config/_labels.yaml

💤 Files with no reviewable changes (1)

• core-services/prow/02_config/_labels.yaml

---

Walkthrough

The PR removes the repository-specific label configuration for ViaQ/vector from Prow's labels configuration file, eliminating the tide/merge-method-squash label definition (7 lines).

Changes

Prow Repository Label Removal

Layer / File(s)	Summary
ViaQ/vector repository label configuration removal core-services/prow/02_config/_labels.yaml	The entire repos.ViaQ/vector block including the tide/merge-method-squash label entry is deleted from the YAML configuration.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 12

✅ Passed checks (12 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately describes the main change: reverting a previous commit that added ViaQ/vector labels, which is the precise action taken in the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Stable And Deterministic Test Names	✅ Passed	Check not applicable. This PR only modifies a YAML configuration file and contains no Ginkgo test code. The custom check for stable Ginkgo test names does not apply.
Test Structure And Quality	✅ Passed	PR only modifies a YAML config file (core-services/prow/02_config/_labels.yaml), not Ginkgo test code. The custom check for test structure and quality is not applicable.
Microshift Test Compatibility	✅ Passed	This PR only modifies a Prow labels configuration file, reverting a change to remove a ViaQ/vector repo label. No new Ginkgo e2e tests are added, so the check is not applicable.
Single Node Openshift (Sno) Test Compatibility	✅ Passed	This PR reverts a prow label config change in _labels.yaml. It contains no Ginkgo e2e tests. SNO compatibility check applies only to new e2e tests, so not applicable here.
Topology-Aware Scheduling Compatibility	✅ Passed	PR reverts a Prow CI label configuration file. The topology-aware scheduling check only applies to deployment manifests, operator code, or controllers. Not applicable.
Ote Binary Stdout Contract	✅ Passed	This PR modifies only a YAML configuration file for Prow label management. The OTE Binary Stdout Contract check applies to executable code, not configuration files.
Ipv6 And Disconnected Network Test Compatibility	✅ Passed	No Ginkgo e2e tests added. PR only modifies core-services/prow/02_config/_labels.yaml, a Prow configuration file that defines repository labels. Check is not applicable to configuration files.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[REHEARSALNOTIFIER]
@redhat-chai-bot: no rehearsable tests are affected by this change

Note: If this PR includes changes to step registry files (ci-operator/step-registry/) and you expected jobs to be found, try rebasing your PR onto the base branch. This helps pj-rehearse accurately detect changes when the base branch has moved forward.

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/ok-to-test

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