Migrate off the retired tool-base artifact

[alexander-yevsyukov]

Migrates this repository off the retired io.spine.tools:tool-base artifact onto
the focused modules that replaced it, per
tool-base#189.

Imports migrated

From	To	File
io.spine.tools.code.proto.CodeGeneratorRequestWriter	io.spine.tools.proto.code.CodeGeneratorRequestWriter	protoc-plugin/src/main/kotlin/io/spine/tools/compiler/protoc/Plugin.kt

That is the only source edit. The repository was re-scanned for every other
breaking change listed in the split — io.spine.tools.OsFamily,
io.spine.tools.{div, resolve, toAbsoluteFile, isProtoSource},
io.spine.tools.StandardTypes, io.spine.tools.type, Method(MethodSpec),
the io.spine.tools.java.code.{classSpec, constructorSpec, methodSpec, codeBlock}
move to .poet, and the dropped SourceSetName parameter on Generated.dir /
SourceRoot.subDir — and none of them occur here. No code calls
MoreKnownTypes, so the Base 2.0.0-SNAPSHOT.441 runtime guard does not apply.

Dependency constants

ToolBase.lib is replaced everywhere by the modules each project actually uses:

Project	Constants
api	code, kotlinCode
backend	code
gradle-plugin	code, fs
jvm	javaCode
protoc-plugin	protoCode

:jvm did not previously declare java-code at all — it received it
transitively through api(ToolBase.lib) in :api. It is now declared
explicitly, and as api rather than implementation: the ReplaceWith
clauses in JavaLangExts direct consumers at io.spine.tools.java
declarations, so those must remain on the consumer compile classpath.

The version-forcing blocks list the same modules:
buildSrc/src/main/kotlin/module.gradle.kts, tests/build.gradle.kts, and
tests/compiler-extension/build.gradle.kts. The spine-tool-base
dependencySubstitution rule in tests/compiler-extension is dropped — its
substitution target no longer exists, and nothing on the classpath requests the
legacy coordinates.

Two deliberate divergences from config

Both are intentional; please do not "fix" them by re-running ./config/pull.

1. ToolBase.version is 2.0.0-SNAPSHOT.421, while config ships .420.
   .421 is the first tool-base build this migration targets. It is published
   remotely, so CI resolves it normally. dogfoodingVersion is untouched at
   .410 — jvm-tool-plugins-all is unaffected by the split.
2. PalantirJavaFormat stays at 2.97.0. config still ships 2.91.0, so
   ./config/pull rolled this repository's deliberate bump (17bca07) backward.
   The newer value was restored.

Verification

• ./gradlew clean, then ./gradlew build dokkaGenerate — BUILD SUCCESSFUL,
  including :integrationTest and :gradle-plugin:functionalTest.
• grep -rn "ToolBase\.lib\|io\.spine\.tools:tool-base" over *.kt, *.kts,
  *.gradle — zero matches. This mattered: a stale pre-split
  tool-base:2.0.0-SNAPSHOT.420 sits in the local Maven repository, so a
  surviving reference would have resolved locally and only failed on CI.
• io.spine.tools:tool-base no longer appears in docs/dependencies/pom.xml or
  dependencies.md; the five replacement modules resolve at
  2.0.0-SNAPSHOT.421, with java-code at compile scope.
• Reviewed by spine-code-review, kotlin-engineer, dependency-audit, and
  review-docs. The Kotlin reviewer's finding on :jvm's dependency scope is
  fixed in 264981c.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR migrates the build and source code off the retired io.spine.tools:tool-base artifact onto the split-out tool-base modules, and updates the dependency-reporting (generated pom.xml) logic to report versions actually selected by Gradle resolution in multi-project builds.

Changes:

• Replace ToolBase.lib usages with the appropriate focused modules (code, fs, java-code, kotlin-code, proto-code) across subprojects and version-forcing rules.
• Update protoc-plugin source import to the new CodeGeneratorRequestWriter package and adjust dependencies accordingly.
• Rework the dependency report generator to collect resolved versions per-project via dedicated tasks; add TestKit coverage and refresh generated dependency docs.

Reviewed changes

Copilot reviewed 25 out of 27 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
version.gradle.kts	Bumps published compiler version constant.
tests/compiler-extension/build.gradle.kts	Removes legacy substitution and forces the split ToolBase modules + validation artifacts.
tests/build.gradle.kts	Forces split ToolBase modules instead of the retired monolith.
protoc-plugin/src/main/kotlin/io/spine/tools/compiler/protoc/Plugin.kt	Migrates CodeGeneratorRequestWriter import to the new module/package.
protoc-plugin/build.gradle.kts	Depends on ToolBase.protoCode instead of ToolBase.lib.
jvm/build.gradle.kts	Adds explicit api(ToolBase.javaCode) dependency for consumer compile classpath needs.
gradle/wrapper/gradle-wrapper.properties	Updates Gradle wrapper distribution version.
gradle-plugin/build.gradle.kts	Splits ToolBase.lib into ToolBase.code + ToolBase.fs dependencies.
docs/dependencies/pom.xml	Regenerates dependency POM reflecting split ToolBase modules and updated versions.
docs/dependencies/dependencies.md	Regenerates dependency/license report reflecting current resolved dependency set.
buildSrc/src/test/kotlin/io/spine/gradle/report/pom/PomGeneratorIgTest.kt	Adds TestKit integration test for generatePom behavior in a real multi-project build.
buildSrc/src/test/kotlin/io/spine/gradle/report/pom/DependencyWriterSpec.kt	Updates unit tests to supply resolved versions via the new collection pathway.
buildSrc/src/main/kotlin/module.gradle.kts	Updates forced dependency set to the split ToolBase modules.
buildSrc/src/main/kotlin/io/spine/gradle/report/pom/ResolvedVersions.kt	Introduces per-project resolved-version collection and persistence for stable reports.
buildSrc/src/main/kotlin/io/spine/gradle/report/pom/PomXmlWriter.kt	Threads per-project resolved-versions lookup into POM writing.
buildSrc/src/main/kotlin/io/spine/gradle/report/pom/PomGenerator.kt	Registers per-project collectors and makes generatePom depend on them.
buildSrc/src/main/kotlin/io/spine/gradle/report/pom/DependencyWriter.kt	Switches dependency version selection to an injected resolved-versions provider; exposes moduleKey.
buildSrc/src/main/kotlin/io/spine/dependency/local/Validation.kt	Bumps Validation dependency version constant.
buildSrc/src/main/kotlin/io/spine/dependency/local/ToolBase.kt	Defines split ToolBase module coordinates and deprecates the retired monolith.
buildSrc/src/main/kotlin/io/spine/dependency/local/CoreJvmCompiler.kt	Bumps Core JVM compiler version constants.
buildSrc/src/main/kotlin/io/spine/dependency/local/Compiler.kt	Bumps compiler fallback versions used by build tooling.
buildSrc/src/main/kotlin/io/spine/dependency/lib/Jackson.kt	Aligns Jackson “moneta” module coordinate with shared infix.
buildSrc/build.gradle.kts	Adds TestKit dependency and configures tests to pass buildSrc classpath to TestKit builds.
backend/build.gradle.kts	Replaces ToolBase.lib with ToolBase.code.
api/build.gradle.kts	Replaces ToolBase.lib with ToolBase.code + ToolBase.kotlinCode.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.89%. Comparing base (1e6d1c2) to head (264981c).

Additional details and impacted files

@@            Coverage Diff            @@
##             master      #86   +/-   ##
=========================================
  Coverage     76.89%   76.89%           
  Complexity      688      688           
=========================================
  Files           205      205           
  Lines          4025     4025           
  Branches        402      402           
=========================================
  Hits           3095     3095           
  Misses          800      800           
  Partials        130      130           

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