publish: align data-module POM coordinates and names with module names

skainet-data-simple published under the mismatched artifactId
skainet-data-basic; align it to the module name (BREAKING coordinate
change for direct consumers, noted under Unreleased — takes effect with
the release after 0.34.0). skainet-data-transform keeps its coordinates
but gets a distinct POM name; it previously duplicated the datasets
module's "skainet neural basic datasets".

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: michalharakal

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 ## [Unreleased]
 
+### Changed
+
+- **BREAKING (coordinates): `skainet-data-simple` now publishes under its module name.** The artifactId
+  changes from the mismatched `sk.ainet.core:skainet-data-basic` to `sk.ainet.core:skainet-data-simple`;
+  update your dependency declarations when upgrading past 0.34.0 (BOM consumers only need the new
+  artifactId). `skainet-data-transform` also gets a distinct POM name ("skainet data transforms" — it
+  previously duplicated the datasets module's name); its coordinates are unchanged.
+
 ## [0.34.0] - 2026-07-05
 
 ### Added

skainet-data/skainet-data-simple/gradle.properties

@@ -1,2 +1,2 @@
-POM_ARTIFACT_ID=skainet-data-basic
-POM_NAME=skainet neural basic datasets
+POM_ARTIFACT_ID=skainet-data-simple
+POM_NAME=skainet simple datasets

skainet-data/skainet-data-transform/gradle.properties

@@ -1,2 +1,2 @@
 POM_ARTIFACT_ID=skainet-data-transform
-POM_NAME=skainet neural basic datasets
+POM_NAME=skainet data transforms