Update dependencies

[alexander-yevsyukov]

This PR updates major external and internal dependencies.

Updated external dependencies:

• Kotlin -> 9.3.10
• KSP -> 2.3.6
• Protobuf -> 4.34.0
• Protobuf Gradle Plugin -> 0.9.6.
• Gradle -> 9.4.0.

Base, Compiler, Validation, ToolBase, Time, and CoreJvm Compiler were also updated.

The update of CoreJvm Compiler was needed to overcome the change of the behaviour of inheritance of a property from multiple interfaces, when one of the interfaces was inherited indirectly via an abstract class.

Other notable changes

• config was updated.
• The jvmDefault property of KotlinJvmCompilerOptions were changed from ENABLE to NO_COMPATIBILITY to be inline with the previous "-Xjvm-default=all" compiler argument. The change is going to be propagated to config shortly.

[Copilot]

Pull request overview

Updates build tooling and dependencies (Gradle, Kotlin, Protobuf, Spine components) and tweaks build/test infrastructure to match the newer ecosystem.

Changes:

• Bumped multiple dependency/version constants (Compiler/ToolBase/Validation/Time/ModelCompiler, Kotlin, Protobuf, Gradle wrapper).
• Adjusted Gradle build behavior (wrapper scripts, JVM args, repository definitions, task annotations).
• Added repository documentation-writer agent assets/templates and fixed a docs link.

Reviewed changes

Copilot reviewed 27 out of 29 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
version.gradle.kts	Bumps compiler snapshot version.
jvm/src/main/kotlin/io/spine/tools/compiler/jvm/FieldExts.kt	Adds suppression annotations for Java collection FQNs.
gradlew.bat	Removes env var disabling Protobuf compatibility check.
gradlew	Removes env var disabling Protobuf compatibility check; updates Gradle template link.
gradle/wrapper/gradle-wrapper.properties	Updates Gradle wrapper distribution URL.
gradle.properties	Adds file encoding JVM arg for Gradle daemon.
gradle-plugin/src/main/kotlin/io/spine/tools/compiler/gradle/plugin/LaunchSpineCompiler.kt	Marks task cacheable and refines classpath input annotations.
config	Updates submodule reference.
buildSrc/src/main/kotlin/io/spine/gradle/testing/Logging.kt	Replaces Groovy closure interop with a TestListener.
buildSrc/src/main/kotlin/io/spine/gradle/repo/Repositories.kt	Adds JetBrains cache redirector and broadens repository content filters.
buildSrc/src/main/kotlin/io/spine/gradle/kotlin/KotlinConfig.kt	Updates Kotlin compiler args handling for JVM default methods.
buildSrc/src/main/kotlin/io/spine/dependency/local/Validation.kt	Bumps Validation snapshot version.
buildSrc/src/main/kotlin/io/spine/dependency/local/ToolBase.kt	Bumps ToolBase versions (incl. dogfooding).
buildSrc/src/main/kotlin/io/spine/dependency/local/Time.kt	Bumps Time snapshot version.
buildSrc/src/main/kotlin/io/spine/dependency/local/ModelCompiler.kt	Bumps ModelCompiler snapshot version.
buildSrc/src/main/kotlin/io/spine/dependency/local/CoreJvmCompiler.kt	Bumps CoreJvmCompiler snapshot versions.
buildSrc/src/main/kotlin/io/spine/dependency/local/Compiler.kt	Updates fallback versions for compiler deps.
buildSrc/src/main/kotlin/io/spine/dependency/local/Base.kt	Bumps Base snapshot versions.
buildSrc/src/main/kotlin/io/spine/dependency/lib/Protobuf.kt	Bumps Protobuf and protobuf-gradle-plugin versions.
buildSrc/src/main/kotlin/io/spine/dependency/lib/Kotlin.kt	Bumps Kotlin runtime version.
buildSrc/build.gradle.kts	Aligns buildSrc Kotlin embedded, Guava, and Protobuf plugin versions.
.agents/skills/writer/assets/templates/kotlin-java-example.md	Adds doc template for Kotlin/Java code tabs.
.agents/skills/writer/assets/templates/kdoc-example.md	Adds KDoc example template.
.agents/skills/writer/assets/templates/doc-page.md	Adds documentation page template.
.agents/skills/writer/agents/openai.yaml	Adds “Writer” agent configuration.
.agents/skills/writer/SKILL.md	Adds documentation writing skill guidance.
.agents/documentation-guidelines.md	Fixes link to the text-flow diagram asset.

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[Copilot]

Pull request overview

Copilot reviewed 29 out of 32 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (1)

pom.xml:1

• PR description says Kotlin -> 9.3.10, but the actual updated Kotlin version in code is 2.3.10. Please update the PR description to match the committed versions to avoid confusion during release notes/review.

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[Copilot]

Marking the task @CacheableTask while declaring sources with PathSensitivity.ABSOLUTE will severely reduce cache hits (absolute paths differ across machines and often across CI workspaces). Prefer PathSensitivity.RELATIVE (or another suitable sensitivity) for source directories unless the absolute location is semantically required for the compiler output.

[Copilot]

Two concrete resolution risks here: (1) jetBrainsCacheRedirector is added without any content {} restriction, so it may become eligible to serve any group/artifact, potentially changing dependency resolution in hard-to-debug ways depending on repository order. (2) Broadening intellijDependencies filters to org.jetbrains.* / com.jetbrains.* can inadvertently match Kotlin and other JetBrains ecosystem libraries that are typically expected from Maven Central, again affecting resolution. Consider restricting both repositories to only the IntelliJ-specific groups you actually need (or wrapping them in exclusiveContent), and keep the regexes narrowly scoped (e.g., IntelliJ/JetBrains IntelliJ groups) to avoid accidental shadowing.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Remove cacheability until request file is declared input

Adding @CacheableTask here makes cache hits possible even though task outputs depend on the request file under workingDir.requestDirectory (read in hasRequestFile() and passed into createParametersFile()), and that file is not declared as an input property. In cache-enabled builds, this can reuse stale generated sources when request contents change without changing declared inputs (for example, proto option changes that affect Spine compiler behavior but not generated builtin sources), so the task may skip execution and restore outdated outputs.

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