🌱 add Go 1.26 support with golangci-lint v2.12.2

[tesshuflower]

Updates both lint scripts to use golangci-lint v2.12.2 for Go 1.26+ projects.

golangci-lint v2.12.2 is built with Go 1.26.2 and supports linting Go 1.26 code.

Version mapping:

• Go 1.26+ → golangci-lint v2.12.2
• Go 1.24-1.25 → golangci-lint v2.8.0
• Go 1.23 → golangci-lint v2.3.1

Summary by CodeRabbit

• Chores
  • Updated CI linting infrastructure to support Go 1.26+
  • Extended compatibility version mappings to automatically select appropriate linting tools for Go 1.26 and later
  • Enhanced linting pipeline configuration to recognize and properly handle newer Go language versions

[coderabbitai]

Walkthrough

This PR adds Go 1.26+ support to the golangci-lint tooling by mapping Go 1.26 and later to golangci-lint v2.12.2. The compatibility mapping is documented and implemented in install-golangci-lint.sh, while the runtime version detection in run-lint.sh is updated to select the same version for Go 1.26+.

Changes

Go 1.26+ golangci-lint version support

Layer / File(s)	Summary
Install-time version compatibility mapping ci/lint/install-golangci-lint.sh	Compatibility table is updated with Go 1.26+ → v2.12.2 mapping, and select_compatible_version() adds a conditional branch to return v2.12.2 for Go versions >= 1.26.
Run-time version detection ci/lint/run-lint.sh	detect_versions() function adds a new conditional gate for Go 1.26+ that sets LINT_VERSION to v2.12.2 before the existing Go 1.24+ fallback logic.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

lgtm

Suggested reviewers

• qiujian16

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The PR description covers the main changes and includes a version mapping table, but it does not follow the repository's template structure with required sections like Summary and Related issue(s).	Restructure the description to match the template: add a Summary section, specify any Related issue(s), and organize the version mapping information accordingly.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
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.
Title check	✅ Passed	The title clearly and concisely summarizes the main change: adding Go 1.26 support with a specific golangci-lint version (v2.12.2), which directly corresponds to the core modifications in both lint scripts.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 0

[xuezhaojun]

/lgtm

[xuezhaojun]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tesshuflower, xuezhaojun

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• ci/OWNERS [xuezhaojun]

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