#81: Verify configuration cache works

[kaklakariada]

Closes #81

[Copilot]

Pull request overview

This PR implements and verifies Gradle configuration-cache compatibility for the OpenFastTrace Gradle plugin, adds explicit cache-reuse coverage in TestKit functional tests, and declares configuration-cache support in the plugin publishing metadata (per #81).

Changes:

• Make TestKit runs enforce configuration-cache reuse with --configuration-cache-problems=fail and add explicit reuse assertions for traceRequirements, including imported ZIP requirements.
• Refactor plugin task wiring and task inputs to be more configuration-cache friendly (lazy providers + file collection inputs).
• Declare configuration-cache compatibility in Gradle Plugin Portal metadata and align CI to run with configuration cache enabled.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/test/java/org/itsallcode/openfasttrace/gradle/PluginTestFixture.java	Forces config cache + problems=fail for TestKit invocations and adds a broader outcome assertion helper.
src/test/java/org/itsallcode/openfasttrace/gradle/OpenFastTracePluginTest.java	Adds explicit configuration-cache reuse tests for traceRequirements with custom config and imported requirements ZIP.
src/main/java/org/itsallcode/openfasttrace/gradle/task/TraceTask.java	Updates imported requirements to a file-collection input for better cacheability and lazy resolution.
src/main/java/org/itsallcode/openfasttrace/gradle/OpenFastTracePlugin.java	Improves laziness for task properties and defers imported-requirements resolution via configurations.
CHANGELOG.md	Documents #81 in the Unreleased changelog.
build.gradle	Declares configuration-cache compatibility in plugin-publish metadata and adjusts default toolchain Java version.
.vscode/settings.json	Removes a VS Code Java save-action setting.
.github/workflows/build.yml	Runs CI build with configuration cache + problems=fail and simplifies report artifacts.

Suppressed comments (1)

src/main/java/org/itsallcode/openfasttrace/gradle/OpenFastTracePlugin.java:159

• oftRequirementConfig is created via project.getConfigurations().create(...) with default flags (consumable + resolvable + visible). With --warning-mode fail this commonly triggers Gradle warnings about configurations being both resolvable and consumable, and it also exposes an internal configuration to build authors. Prefer reusing an existing configuration and explicitly marking it resolvable-only/non-visible.

    private static Configuration getImportedRequirements(final Project project)
    {
        final String CONFIG_NAME = "oftRequirementConfig";
        final Configuration configuration = project.getConfigurations().create(CONFIG_NAME);
        getConfig(project).getImportedRequirements().get().forEach(dependency -> {

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

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