Docs/add jharmonizer integration work (#2)

* docs: add Chronizer third-party CLI and Maven plugin section to README

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* docs: rename Chronizer to JHarmonizer with correct repo URL

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* docs: fix JHarmonizer disclaimer formatting and add tool description

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* docs: improve JHarmonizer description with plain language and three-mode overview

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* docs: remove third-party label, disclaimer, and git hooks bullet from JHarmonizer section

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* docs: fix "three modes" -> "two modes" after removing git hooks bullet

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README.md

@@ -14,6 +14,7 @@ _A modern, lambda-friendly, 120 character Java formatter._
 - [IntelliJ plugin](https://plugins.jetbrains.com/plugin/13180-palantir-java-format)
 - [Gradle plugin](#palantir-java-format-gradle-plugin)
 - [Spotless](#spotless)
+- [JHarmonizer](#jharmonizer)
 
 It is based on the excellent [google-java-format](https://github.com/google/google-java-format), and benefits from the work of all the [original authors](https://github.com/google/google-java-format/graphs/contributors). palantir-java-format is available under the same [Apache 2.0 License](./LICENSE).
 
@@ -150,6 +151,22 @@ when formatting java code.
 - See [integration in Spotless Gradle plugin](https://github.com/diffplug/spotless/tree/main/plugin-gradle#palantir-java-format).
 - See [integration in Spotless Maven plugin](https://github.com/diffplug/spotless/tree/main/plugin-maven#palantir-java-format).
 
+## JHarmonizer
+
+[JHarmonizer](https://github.com/lemon-ant/JHarmonizer) sorts and formats Java source files. It reorders class members — fields, constructors, methods, nested types, and initializer blocks — according to configurable rules, then formats the result using `palantir-java-format`. Before reordering, JHarmonizer analyses the relationships between class members (for example, which fields are read by which initializers) to ensure the reordered source still compiles and behaves correctly.
+
+JHarmonizer works in two modes:
+
+- **Reorder and format** – automatically reorder and format sources during the build or from the command line.
+- **Check** – verify that sources are already correctly ordered and formatted; fail the build (or report all violations) if they are not. Useful for enforcing standards in CI.
+
+It is available as:
+
+- **CLI tool** – a standalone fat JAR for use outside of Maven; sort and format Java source files directly from the command line.
+- **Maven plugin** – a build-lifecycle plugin that binds reordering and checking goals to standard Maven phases (`process-sources`, `validate`, etc.).
+
+See the [JHarmonizer repository](https://github.com/lemon-ant/JHarmonizer) for installation instructions and configuration options.
+
 ## IntelliJ plugin
 
 A