Add direct and AI-assisted command insertion modes

.github/workflows/build.yml

@@ -22,6 +22,13 @@ jobs:
     - name: Install dependencies
       run: python -m pip install -U "jupyterlab>=4,<5"
 
+    - name: Check lockfiles are deduplicated
+      run: |
+        set -eux
+        jlpm dedupe --check
+        cd ui-tests
+        jlpm dedupe --check
+
     - name: Lint the extension
       run: |
         set -eux

README.md

@@ -23,7 +23,7 @@ This extension provides a new command, `Load Current File As Extension`, availab
 
 It also adds a single right sidebar panel with two collapsible sections:
 
-- **Extension Points**: token string IDs and command IDs, with a `Tokens` / `Commands` switch. Tokens support search, copy, and import actions. Commands support search and copy actions.
+- **Extension Points**: token string IDs and command IDs, with a `Tokens` / `Commands` switch. Tokens support search, copy, and import actions. Commands support search, copy, and insert-at-cursor actions.
 - **Extension Examples**: discovered examples from a local checkout of [`jupyterlab/extension-examples`](https://github.com/jupyterlab/extension-examples), so you can open them directly from the panel.
 
 If examples are missing:
@@ -139,6 +139,24 @@ Plugin Playground supports AI-assisted extension prototyping in both JupyterLite
 - [JupyterLite AI documentation](https://jupyterlite-ai.readthedocs.io/en/latest/)
 - [Plugin authoring skill for agents](_agents/skills/plugin-authoring/SKILL.md)
 
+### Command Insert Modes (Default + AI Prompt)
+
+The `+` action in the `Commands` tab depends on mode:
+
+- `Insert in selection` inserts:
+
+```ts
+app.commands.execute('<command-id>');
+```
+
+at the active cursor position.
+
+- `Prompt AI to insert` does not insert directly. It opens JupyterLite AI chat and prefills a prompt with file context so AI can choose the best insertion location before you submit.
+
+The sidebar remembers your last-used command insert mode in:
+
+- `commandInsertDefaultMode` (`insert` or `ai`, `insert` by default)
+
 ### Commands for AI Agents and Automation
 
 Plugin Playground now exposes command APIs that mirror sidebar data and support optional `query` filtering:

package.json

@@ -60,6 +60,7 @@
     "@codemirror/state": "^6.5.4",
     "@codemirror/view": "^6.39.16",
     "@jupyter-widgets/base": "^6.0.0",
+    "@jupyter/chat": "^0.21.0",
     "@jupyterlab/application": "^4.5.5",
     "@jupyterlab/apputils": "^4.6.5",
     "@jupyterlab/codemirror": "^4.5.5",

schema/plugin.json

@@ -37,6 +37,13 @@
       "default": false,
       "type": "boolean"
     },
+    "commandInsertDefaultMode": {
+      "title": "Default command insertion mode",
+      "description": "The default action used by the + button in the Commands tab. Use \"insert\" to insert command execution directly at cursor, or \"ai\" to open JupyterLite AI chat with a prefilled prompt so AI can place the insertion in context.",
+      "default": "insert",
+      "type": "string",
+      "enum": ["insert", "ai"]
+    },
     "plugins": {
       "title": "Plugins",
       "description": "List of strings of plugin text to load automatically. Line breaks are encoded as '\\n'",