build(zstd): single zstd-platform dependency (0.3)

Bump io.github.dfa1.zstd to 0.3 and collapse the three OS-activated
zstd-native-<platform> profiles into one dependency on the zstd-platform
marker jar, which transitively brings the zstd binding plus the native
libzstd for every supported platform. Declared optional/runtime at the
parent level (mirroring the zstd binding's opt-in nature) so it is not
forced on downstream consumers, and added to the BOM + dependencyManagement.

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

Author: dfa1

CHANGELOG.md

@@ -14,7 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
-- The `vortex.zstd` encoding now compresses and decompresses through `io.github.dfa1.zstd:zstd` (FFM bindings to the native `libzstd`) instead of `io.airlift:aircompressor-v3`. Consumers of `vortex.zstd` must declare the `zstd` dependency plus the `zstd-native-<platform>` artifact for their platform (e.g. `zstd-native-osx-aarch64`, `zstd-native-linux-x86_64`).
+- The `vortex.zstd` encoding now compresses and decompresses through `io.github.dfa1.zstd:zstd` (FFM bindings to the native `libzstd`) instead of `io.airlift:aircompressor-v3`. Consumers of `vortex.zstd` declare a single dependency, `io.github.dfa1.zstd:zstd-platform`, which transitively brings the `zstd` binding plus the native `libzstd` for every supported platform (replacing the former per-platform `zstd-native-<platform>` artifacts).
 
 ### Fixed
 

bom/pom.xml

@@ -24,6 +24,12 @@
 				<artifactId>zstd</artifactId>
 				<version>${zstd.version}</version>
 			</dependency>
+			<dependency>
+				<!-- Marker jar bundling zstd plus native libzstd for all platforms. -->
+				<groupId>io.github.dfa1.zstd</groupId>
+				<artifactId>zstd-platform</artifactId>
+				<version>${zstd.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>io.github.dfa1.vortex</groupId>
 				<artifactId>vortex-core</artifactId>

pom.xml

@@ -58,7 +58,7 @@
 		<maven.compiler.release>25</maven.compiler.release>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<!-- production -->
-		<zstd.version>0.2</zstd.version>
+		<zstd.version>0.3</zstd.version>
 
 
 		<fastcsv.version>4.3.0</fastcsv.version>
@@ -195,6 +195,14 @@
 				<artifactId>zstd</artifactId>
 				<version>${zstd.version}</version>
 			</dependency>
+			<dependency>
+				<!-- Marker jar that transitively pulls zstd plus the native libzstd for every
+				     supported platform; the zstd FFM loader picks the one matching the runtime
+				     platform. Replaces the former per-platform zstd-native-<platform> artifacts. -->
+				<groupId>io.github.dfa1.zstd</groupId>
+				<artifactId>zstd-platform</artifactId>
+				<version>${zstd.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>com.github.luben</groupId>
 				<artifactId>zstd-jni</artifactId>
@@ -285,6 +293,16 @@
 			<version>${bytebuddy.version}</version>
 			<scope>test</scope>
 		</dependency>
+		<!-- Native libzstd for every supported platform, bundled by the zstd-platform marker
+		     jar; provides the runtime library the zstd FFM bindings load during our own build
+		     and tests. Optional like the zstd binding itself: not forced on downstream consumers,
+		     who add zstd-platform themselves (version pinned by the BOM). No per-OS profile. -->
+		<dependency>
+			<groupId>io.github.dfa1.zstd</groupId>
+			<artifactId>zstd-platform</artifactId>
+			<scope>runtime</scope>
+			<optional>true</optional>
+		</dependency>
 	</dependencies>
 
 	<build>
@@ -436,62 +454,6 @@
 	</build>
 
 	<profiles>
-		<profile>
-			<!-- io.github.dfa1.zstd:zstd ships no bundled native; its FFM loader reads
-			     libzstd from a /native/<platform>/ classpath resource carried by a separate
-			     zstd-native-<platform> artifact. Pull in the one matching the build host.
-			     Add more platforms as needed. -->
-			<id>zstd-native-osx-aarch64</id>
-			<activation>
-				<os>
-					<family>mac</family>
-					<arch>aarch64</arch>
-				</os>
-			</activation>
-			<dependencies>
-				<dependency>
-					<groupId>io.github.dfa1.zstd</groupId>
-					<artifactId>zstd-native-osx-aarch64</artifactId>
-					<version>${zstd.version}</version>
-					<scope>runtime</scope>
-				</dependency>
-			</dependencies>
-		</profile>
-		<profile>
-			<id>zstd-native-linux-x86_64</id>
-			<activation>
-				<os>
-					<family>unix</family>
-					<name>linux</name>
-					<arch>amd64</arch>
-				</os>
-			</activation>
-			<dependencies>
-				<dependency>
-					<groupId>io.github.dfa1.zstd</groupId>
-					<artifactId>zstd-native-linux-x86_64</artifactId>
-					<version>${zstd.version}</version>
-					<scope>runtime</scope>
-				</dependency>
-			</dependencies>
-		</profile>
-		<profile>
-			<id>zstd-native-windows-x86_64</id>
-			<activation>
-				<os>
-					<family>windows</family>
-					<arch>amd64</arch>
-				</os>
-			</activation>
-			<dependencies>
-				<dependency>
-					<groupId>io.github.dfa1.zstd</groupId>
-					<artifactId>zstd-native-windows-x86_64</artifactId>
-					<version>${zstd.version}</version>
-					<scope>runtime</scope>
-				</dependency>
-			</dependencies>
-		</profile>
 		<profile>
 			<!-- Activated in CI: ./mvnw verify -P coverage  -->
 			<!-- Attaches the JaCoCo agent to surefire/failsafe and writes one