fix(ci): convert space-separated wildcard suites to comma-separated

scalatest-maven-plugin splits wildcardSuites on commas and passes
each entry as a separate -w arg to the ScalaTest runner. The YAML >-
folded scalar collapses line breaks to spaces, so the whole package
list was passed as one garbage package name -> 0 tests found.

Fix: FILTER=$(echo ... | tr ' ' ',') before the mvn call.

Author: constantine2nd

.github/workflows/build_container.yml

@@ -237,15 +237,12 @@ jobs:
 
       - name: Run tests — shard ${{ matrix.shard }} (${{ matrix.name }})
         run: |
-          # mvn test runs the full lifecycle. With compiled classes already
-          # present in target/ (from the artifact), Zinc incremental compilation
-          # detects no source changes and skips recompilation. Tests are run by
-          # scalatest-maven-plugin (surefire is disabled in pom.xml).
-          # -DwildcardSuites filters to the packages for this shard.
-          # See README.md: "mvn -DwildcardSuites=code.api.directloginTest test"
+          # wildcardSuites requires comma-separated package prefixes (-w per entry).
+          # The YAML >- scalar collapses newlines to spaces, so we convert here.
+          FILTER=$(echo "${{ matrix.test_filter }}" | tr ' ' ',')
           MAVEN_OPTS="-Xmx3G -Xss2m -XX:MaxMetaspaceSize=1G" \
             mvn test \
-              -DwildcardSuites="${{ matrix.test_filter }}" \
+              -DwildcardSuites="$FILTER" \
             > maven-build-shard${{ matrix.shard }}.log 2>&1
 
       - name: Report failing tests — shard ${{ matrix.shard }}

.github/workflows/build_pull_request.yml

@@ -237,15 +237,12 @@ jobs:
 
       - name: Run tests — shard ${{ matrix.shard }} (${{ matrix.name }})
         run: |
-          # mvn test runs the full lifecycle. With compiled classes already
-          # present in target/ (from the artifact), Zinc incremental compilation
-          # detects no source changes and skips recompilation. Tests are run by
-          # scalatest-maven-plugin (surefire is disabled in pom.xml).
-          # -DwildcardSuites filters to the packages for this shard.
-          # See README.md: "mvn -DwildcardSuites=code.api.directloginTest test"
+          # wildcardSuites requires comma-separated package prefixes (-w per entry).
+          # The YAML >- scalar collapses newlines to spaces, so we convert here.
+          FILTER=$(echo "${{ matrix.test_filter }}" | tr ' ' ',')
           MAVEN_OPTS="-Xmx3G -Xss2m -XX:MaxMetaspaceSize=1G" \
             mvn test \
-              -DwildcardSuites="${{ matrix.test_filter }}" \
+              -DwildcardSuites="$FILTER" \
             > maven-build-shard${{ matrix.shard }}.log 2>&1
 
       - name: Report failing tests — shard ${{ matrix.shard }}