enhancement - imported yaml does not provide the text boxes for optional, empty fields.

[taylorlm88]

This is not a bug but could be an enhancement. If I import an existing experiment to the designer and the existing experiment did not include an optional field, say "pattern" in its backlight command. In the visual view, the box for the "pattern" field does not appear at all. So if I wanted to import the experiment to edit it, and I wanted to add a value for pattern where I did not have one before, I would not be able to just add in the pattern value, I'd have to delete the command entirely and re-add it so the pattern field would be visible to edit. Not the end of the world but it seems a reasonable enhancement to always make all optional fields available for editing even if they are empty in the original imported experiment.

[mbreiser]

Implemented in commit f79e648 (v0.8.2).

Added backfillPluginParams() — after YAML import, this walks all plugin commands and fills in any missing schema-defined params with their defaults. This ensures the UI always renders input boxes for all fields (required and optional), even when the imported YAML didn't include them.

For example, importing a setRedLEDPower command that only had power: 5 will now also show editable panel_num and pattern fields.

[mbreiser]

Verified working in browser preview. Imported a YAML with a setRedLEDPower command that only had power: 5 — the UI correctly renders all three param fields: power=5, panel_num=0, and pattern= (empty but editable). Users can now fill in optional fields without deleting and re-adding the command.