Fix dcat tests for server mode and --plain flag handling

- Update dcat tests to use comma-separated file lists in server mode
- Fix basehandler.go to properly respect --plain flag for server messages
- Skip empty server messages when in plain mode
- Add separate expected output file for TestDCatColors server mode
- All dcat integration tests now pass in both serverless and server modes

🤖 Generated with [Claude Code](https://claude.ai/code)

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

1 files changed, 3 insertions, 0 deletions

diff --git a/integrationtests-old/dcat3.txt b/integrationtests-old/dcat3.txt
new file mode 100644
index 0000000..f57b70b
--- /dev/null
+++ b/integrationtests-old/dcat3.txt
@@ -0,0 +1,3 @@
+A short line
+A long line (dcat will split it up into multiple smaller lines): Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here Some random content here!
+Another short line