Address build deprecation warnings: PMD ruleset and test task creation

[alexander-yevsyukov]

Summary

Clears the two classes of deprecation warning surfaced when building tool-base.

PMD settings

pmdMain warned that category/java/codestyle.xml/GenericsNaming is deprecated (since PMD 7.17.0) and scheduled for removal in PMD 8.0.0:

Warning at buildSrc/quality/pmd.xml:63:5
  Discontinue using Rule name category/java/codestyle.xml/GenericsNaming as it is
  scheduled for removal from PMD. PMD 8.0.0 will remove support for this Rule.

Replaced it with its official successor TypeParameterNamingConventions, which enforces the same single-uppercase-letter convention for type parameters by default. Copyright year bumped to 2026.

buildSrc/quality/pmd.xml is distributed by the config repository, so the same change is propagated there (see the companion PR in SpineEventEngine/config). The two files are kept byte-identical.

Test code

compileTestKotlin warned on the eager, deprecated TaskContainer.create(String): Task in GradleTaskTest and TaskDependenciesSpec:

w: .../task/GradleTaskTest.kt:48:34 'fun create(name: String): Task' is deprecated. Deprecated in Java.
w: .../task/TaskDependenciesSpec.kt:46:34 'fun create(name: String): Task' is deprecated. Deprecated in Java.

Switched all six task fixtures to the lazy project.tasks.register(name).get(). .get() realises the provider to the Task the assertions need — no behaviour change.

Verification

The full Gradle build could not be run in this environment: its network policy blocks the Spine SNAPSHOT plugins the root build resolves (jvm-tool-plugins-all, protobuf-setup-plugins return 403 from GitHub Packages, Google Artifact Registry, and mycloudrepo). Instead:

• the PMD change was validated against PMD 7.25.0's own ruleset XML — the successor rule exists, is not deprecated, and defaults to the same convention;
• the test change is a type-safe, standard Gradle lazy-API migration.

CI is the final check.

https://claude.ai/code/session_014TVLouXfDWCg1sTQVW3ssM

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