chore: fix gitattributes; guardrail against *.db changes

.gitattributes

@@ -1 +1,2 @@
-* text eol=lf
+* text eol=lf
+*.db -text -eol -working-tree-encoding -merge -diff

.github/workflows/release.yml

@@ -5,6 +5,7 @@ on:
     types: [closed]
     paths:
       - '.github/project.yml'
+  workflow_dispatch: {}
 
 permissions:
   contents: write
@@ -61,6 +62,11 @@ jobs:
         run: |
           git checkout -b release
           mvn -B release:prepare -DperformRelease -Prelease -DreleaseVersion=${{steps.metadata.outputs.current-version}} -DdevelopmentVersion=${{steps.metadata.outputs.next-version}}
+          
+          git restore --staged --worktree -- impl/test/db-samples/** 2>/dev/null || true
+          git clean -fd -- impl/test/db-samples 2>/dev/null || true
+    
+          git status --porcelain
           cat release.properties
           git checkout ${{github.base_ref}}
           git rebase release

impl/test/src/test/java/io/serverlessworkflow/impl/test/DBGenerator.java

@@ -28,15 +28,20 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Map;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class DBGenerator {
 
+  private static final Logger LOG = LoggerFactory.getLogger(DBGenerator.class);
+
   public static void main(String[] args) throws IOException {
     runInstance("db-samples/running_v1.db", false);
     runInstance("db-samples/suspended_v1.db", true);
   }
 
   private static void runInstance(String dbName, boolean suspend) throws IOException {
+    LOG.info("---> Generating db samples at {}", dbName);
     Files.deleteIfExists(Path.of(dbName));
     try (PersistenceInstanceHandlers factories =
             BytesMapPersistenceInstanceHandlers.builder(new MVStorePersistenceStore(dbName))