Jupyter AI plugin schema is never loaded; contains unused cell toolbar and menus

[krassowski]

I was trying to add a shortcut for #799 and noticed that there is schema/plugin.json which contains a cell toolbar button and menu actions:

jupyter-ai/packages/jupyter-ai/schema/plugin.json

Lines 7 to 43 in 5183bc9

	"jupyter.lab.toolbars": {
	"Cell": [
	{
	"name": "ai:explain-or-codify-cell",
	"command": "ai:explain-or-codify-cell",
	"rank": 10
	}
	]
	},
	"jupyter.lab.menus": {
	"context": [
	{
	"name": "ai:explain-code-cell",
	"command": "ai:explain-code-cell",
	"selector": ".jp-CodeCell",
	"rank": 500
	},
	{
	"name": "ai:codify-md-cell",
	"command": "ai:codify-md-cell",
	"selector": ".jp-MarkdownCell",
	"rank": 510
	},
	{
	"name": "ai:generate-from-notebook-selection",
	"command": "ai:generate-from-notebook-selection",
	"selector": ".jp-NotebookPanel",
	"rank": 520
	},
	{
	"name": "ai:generate-from-editor-selection",
	"command": "ai:generate-from-editor-selection",
	"selector": ".jp-FileEditor",
	"rank": 520
	}
	]
	},

However, these do not show up int the UI because the schema is not correctly hooked up, and these commands are not defined. Is it intended?

Also, I am quite confused on the design directions because the original version of the UI did contain a dedicated cell toolbar button but it seems this was changed early on but I cannot find an issue nor PR documenting rationale for this change.

[krassowski]

I see the associated commands were removed in #77 but I do not see any relevant discussion.