Add help text for the freestyle wrapper's credentials field

[jochen-testingbot]

What

The freestyle Build Environment option had help on the tunnel checkbox (help-useTunnel.html) but none on the TestingBot Credentials dropdown. Adds help-credentialsId.html (matching the wording style of the pipeline steps' existing credential help) so the ? icon explains what the credential is for and which env vars it exposes.

Validation

mvn -DskipTests verify clean. Via hpi:run, /descriptorByName/testingbot.TestingBotBuildWrapper/help/credentialsId returns the help HTML (HTTP 200); the existing useTunnel help still returns 200 (no regression).

Summary by CodeRabbit

• Documentation
  • Added help text explaining how to configure TestingBot credentials in Jenkins.
  • Documented the environment variables used to expose the credentials during builds.
  • Clarified that the credentials enable the TestingBot Tunnel when it is turned on.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: f18debb8-8d94-4504-b813-6a100d2b1cf4

📥 Commits

Reviewing files that changed from the base of the PR and between 3f2313b and 3004a74.

📒 Files selected for processing (1)

• src/main/resources/testingbot/TestingBotBuildWrapper/help-credentialsId.html

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📝 Walkthrough

Walkthrough

Added Jenkins help text explaining where TestingBot credentials are configured, which environment variables expose them, and how they support TestingBot Tunnel startup.

Changes

Credentials help

Layer / File(s)	Summary
Document credential sourcing and tunnel usage src/main/resources/testingbot/TestingBotBuildWrapper/help-credentialsId.html	Adds help text describing Jenkins credential storage, key/secret environment variables, and tunnel startup usage.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• testingbot/TestingBot-Jenkins-Plugin#15: Related credentialsId help text documentation.
• testingbot/TestingBot-Jenkins-Plugin#28: Related Jenkins credential usage and TestingBot tunnel documentation.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the new help text added for the wrapper’s credentials field.
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.

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