fix(ci-info): detect GitHub Actions before presence-only CI providers [SDK-7081]

[osho-20]

Problem

SDK-7081 — TRA's Re-run control is missing on some of a customer's Cypress builds. obs-api computes the reRun flag per build and force-disables it when the build has no CI build_url; the TRA frontend greys the control off that flag.

In getCiInfo() (bin/helpers/helper.js) the Jenkins check runs first and matches on the mere presence of JENKINS_URL/JENKINS_HOME. On a self-hosted GitHub Actions runner with leftover Jenkins env vars (the customer runs runs-on: [self-hosted, ...]), the build is classified as Jenkins:

{"name": "Jenkins"}

build_url/job_name/build_number are all undefined (Jenkins vars like BUILD_URL aren't set), so the serialized ci_info reaches TestHub without a build_url → re-run permanently greyed for that build — even on the latest CLI.

Note: the customer's currently-affected workflows also pin pre-1.36.5 CLI versions (no GHA detection at all → ci_info: null, same gate). That part is resolved by upgrading the pins to ≥ 1.36.10; this PR closes the remaining variant that can hit current versions.

Fix

Move the GitHub Actions branch — keyed on the explicit GITHUB_ACTIONS === "true" marker — ahead of the presence-only providers. Explicit CI markers now win over incidental env leftovers.

Also: getGitMetaData() now returns after resolve({}) when no git directory is found, instead of falling through and attempting a second resolve.

Scope

Detection order only — every provider's returned fields are unchanged. Pure-Jenkins environments (no GITHUB_ACTIONS/GITHUB_RUN_ID) still resolve to Jenkins. Complements #1123 (SDK-6279), which fixed build_number in the same branch.

Verification

getCiInfo() under env-faithful GitHub Actions vars plus a leaked JENKINS_HOME=/var/lib/jenkins:

State	Result
Before	{"name":"Jenkins"} — no build_url → re-run greyed
After	{"name":"GitHub Actions","build_url":".../actions/runs/27412345678","build_number":"27412345678"}

• New unit tests in test/unit/bin/helpers/helper.js: GHA detection, the Jenkins-shadowing regression, pure Jenkins, no-CI — all pass.
• Full suite: 693 passing / 16 failing — the 16 failures are pre-existing on master (verified identical with the change stashed).
• End-to-end repro of the gate on real builds (identical suite + GHA env, only CLI version differs): TRA build xa9qkg059unqm0s76mshuadvsiphhdcfbqdafurc (ci_info: null, CLI 1.36.3) vs jl1fvypsbnpeq01viexykee0fdfnxlcye4kuctk3 (ci_info populated, CLI 1.36.13), confirmed via GET /ext/v1/builds/<uuid>.

Release

• minor
• patch

Release notes: Fixed CI detection so GitHub Actions builds on self-hosted runners with leftover Jenkins environment variables are correctly reported as GitHub Actions, restoring Test Observability's Re-run option for those builds.

🤖 Generated with Claude Code

[osho-20]

RUN_TESTS