Report build validation failures with Problems API

[alvarosanchez]

Summary

• Add an internal Micronaut Build Problems API helper with stable micronaut-build > validation group and covered validation IDs.
• Report structured Gradle problems for selected configuration/resolution and task-action validation failures while preserving existing fail-fast exception messages and guidance.
• Sanitize and bound Maven Central response diagnostics before logging/problem reporting, and document the generated Problems report path.

Tests

• ./gradlew --rerun-tasks :micronaut-gradle-plugins:functionalTest --tests 'io.micronaut.build.ProblemsApiFunctionalTest' :micronaut-gradle-plugins:test --tests 'io.micronaut.build.MavenCentralPublishTaskTest' --tests 'io.micronaut.build.problems.MicronautBuildProblemsTest'
• git diff --check origin/8.0.x...HEAD

Paperclip Handoff

• Paperclip issue: DEV-335.
• Linked GitHub issue: none; this was a manual-origin issue, so no GitHub closing keyword or issue-creator reviewer request applies.
• Type label: type: enhancement.
• Micronaut organization projects selected during QA intake: 5.0.0-M3 and 5.0.0 Release.
• Ambiguity note preserved: open public boards also include 5.0.1 Release, 5.1.0 Release, and 6.0.0 Release; QA selected both the matching milestone and GA release boards for the default 8.0.x line.

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[Copilot]

Pull request overview

Adds structured reporting of selected Micronaut Build validation failures via Gradle’s Problems API (targeting the Gradle 9 line), while preserving existing fail-fast exception messages and improving sanitization of diagnostic output.

Changes:

• Introduce MicronautBuildProblems helper to define stable problem groups/IDs and to report failures via Problems reporter.
• Emit Problems API entries for common validation failures across plugins/tasks (BOM enforcement, version mismatch, unsupported test framework, POM checks, Asciidoc output validation, Maven Central publishing).
• Add documentation and new unit/functional tests, including sanitization + bounded diagnostics and Problems report assertions.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
README.md	Documents Problems API diagnostics behavior, report path, and stable IDs.
micronaut-gradle-plugins/src/main/java/io/micronaut/build/problems/MicronautBuildProblems.java	New helper for problem groups/IDs, reporting, and diagnostic sanitization.
micronaut-gradle-plugins/src/main/groovy/io/micronaut/build/MicronautBuildCommonPlugin.groovy	Report enforced platform + Micronaut version mismatch validations via Problems API.
micronaut-gradle-plugins/src/main/groovy/io/micronaut/build/MicronautModulePlugin.groovy	Report unsupported test framework validation via Problems API.
micronaut-gradle-plugins/src/main/groovy/io/micronaut/build/pom/PomChecker.groovy	Report invalid coordinates + POM verification failures via Problems API.
micronaut-gradle-plugins/src/main/groovy/io/micronaut/build/MavenCentralPublishTask.java	Sanitize/bound Maven Central diagnostics and report failures via Problems API; add deployment id extraction/encoding helpers.
micronaut-gradle-plugins/src/main/groovy/io/micronaut/build/docs/ValidateAsciidocOutputTask.java	Report generated Asciidoc output validation failures via Problems API.
micronaut-gradle-plugins/src/test/groovy/io/micronaut/build/problems/MicronautBuildProblemsTest.groovy	Unit tests for sanitization and truncation behavior.
micronaut-gradle-plugins/src/test/groovy/io/micronaut/build/MavenCentralPublishTaskTest.groovy	Unit tests for deployment id extraction + URL encoding + credential-like response rejection.
micronaut-gradle-plugins/src/functionalTest/groovy/io/micronaut/build/ProblemsApiFunctionalTest.groovy	Functional tests asserting Gradle Problems report contains expected IDs/groups.

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