chore: add linting for dataValue in example

[Daryna-del]

What/Why/How?

OpenAPI 3.2 introduced dataValue as the schema-checked example field, but the linter never validated it, so invalid dataValue examples passed silently. This adds linting for dataValue against its schema, matching how value is linted.

Reference

Comment in the issue #919

Testing

Tests passed successfully on monorepo.

Screenshots (optional)

Check yourself

• This PR follows the contributing guide
• All new/updated code is covered by tests
• Core code changed? - Tested with other Redocly products (internal contributions only)
• New package installed? - Tested in different environments (browser/node)
• Documentation update has been considered

Security

• The security impact of the change has been considered
• Code follows company security practices and guidelines

---

Note

Low Risk
Targeted lint extension reusing existing validation; legacy value behavior is preserved and coverage is broad in tests.

Overview
Extends no-invalid-parameter-examples and no-invalid-media-type-examples so OpenAPI 3.2 Example objects are checked on dataValue the same way value already was, closing a gap where invalid structured examples could pass lint.

A shared getExampleValueToValidate helper picks dataValue when present, otherwise value, and both rules route that payload through existing AJV validation. Diagnostics now anchor under the chosen field (e.g. .../examples/foo/dataValue/name), including for $ref-resolved component examples; serializedValue is not used for schema checks.

Docs for both rules add OAS 3.2 dataValue sections; a minor @redocly/openapi-core changeset and new unit/e2e coverage document refs, booleans, binary media, and backward-compatible value on 3.2.

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[changeset-bot]

🦋 Changeset detected

Latest commit: 5a2caee

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@redocly/openapi-core	Minor
@redocly/cli	Minor
@redocly/respect-core	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	69.48% (🎯 69%)	7648 / 11006
🔵	Statements	69.22% (🎯 69%)	7964 / 11505
🔵	Functions	73.87% (🎯 73%)	1538 / 2082
🔵	Branches	61.27% (🎯 61%)	5163 / 8426

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
packages/core/src/rules/utils.ts	92.68%	89.7%	100%	91.78%	67, 101, 111-115, 131, 142-146, 248
packages/core/src/rules/common/no-invalid-parameter-examples.ts	100%	100%	100%	100%
packages/core/src/rules/oas3/no-invalid-media-type-examples.ts	96.29%	91.66%	100%	100%	41

Generated in workflow #10730 for commit 5a2caee by the Vitest Coverage Report Action

[github-actions]

Performance Benchmark (Lower is Faster)

CLI Version	Bundle	Lint	Check Config
cli-latest	▓ 1.00x ± 0.01	▓ 1.00x ± 0.01	▓ 1.00x ± 0.01
cli-next	▓ 1.00x (Fastest)	▓ 1.00x (Fastest)	▓ 1.00x (Fastest)

[github-actions]

📦 A new experimental 🧪 version v0.0.0-snapshot.1783680915 of Redocly CLI has been published for testing.

Install with NPM:

npm install @redocly/cli@0.0.0-snapshot.1783680915

⚠️ Note: This is a development build and may contain unstable features.

[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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