docs: add Maven Central badge; deploy only publishable modules

Add the Maven Central version badge now that 0.1 is published. Correct the
tagline: the bindings avoid sun.misc.Unsafe (not "hand-written C").

Also exclude integration-tests and benchmark from the publish reactor via
-pl, since excludeArtifacts alone did not keep them out of the 0.1 deploy.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: dfa1

.github/workflows/publish.yml

@@ -40,7 +40,11 @@ jobs:
           CENTRAL_USERNAME: ${{ secrets.CENTRAL_USERNAME }}
           CENTRAL_PASSWORD: ${{ secrets.CENTRAL_PASSWORD }}
           GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
-        run: ./mvnw deploy -Prelease -DskipTests --batch-mode -ntp
+        # Exclude internal modules from the published reactor. The
+        # central-publishing plugin aggregates the whole reactor and does not
+        # honor maven.deploy.skip, so drop them here (belt-and-suspenders with
+        # the plugin's excludeArtifacts in the root pom).
+        run: ./mvnw deploy -Prelease -DskipTests --batch-mode -ntp -pl '!integration-tests,!benchmark'
 
       - name: Create GitHub release
         env:

README.md

@@ -1,12 +1,13 @@
 # zstd-java
 
 [![CI](https://github.com/dfa1/zstd-java/actions/workflows/ci.yml/badge.svg)](https://github.com/dfa1/zstd-java/actions/workflows/ci.yml)
+[![Maven Central](https://img.shields.io/maven-central/v/io.github.dfa1.zstd/zstd.svg?label=Maven%20Central)](https://central.sonatype.com/artifact/io.github.dfa1.zstd/zstd)
 ![zstd](https://img.shields.io/badge/zstd-1.5.7-green.svg)
 ![Java](https://img.shields.io/badge/Java-25%2B-orange.svg)
 [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](LICENSE)
 
 **zstd-java** is a Java wrapper for [Zstandard](https://github.com/facebook/zstd)
-built on the **Foreign Function & Memory (FFM) API** — no JNI, no hand-written C.
+built on the **Foreign Function & Memory (FFM) API** — no JNI, no `sun.misc.Unsafe`.
 It targets **JDK 25+** (for stable `java.lang.foreign`) and leads with the
 feature missing from most JVM zstd bindings: **dictionary compression**, trained
 straight from your own data.