adding more nodes

docs/nodes/Journal.md

@@ -0,0 +1,15 @@
+# Journal
+
+A rich-text note for recording experimental observations, analysis notes, or workflow documentation. Content is saved as part of the workflow.
+
+## Outputs
+
+| Name | Type | Description |
+|------|------|-------------|
+| text | STRING | The journal text content |
+
+## Notes
+
+- The Journal node provides a text area for free-form notes within your workflow.
+- Content persists when the workflow is saved and loaded.
+- Use it to document sample preparation details, measurement parameters, or analysis decisions alongside your processing pipeline.