Real bug reported after live testing: `eco jupyterlab` rendered the
Namespace launcher as a large inline block (full notebook width, not a
narrow sidebar like eco desktop's dock), and opening a device apparently
popped a Qt window instead of an ipywidgets view. Root cause: eco jupyterlab
was pointed at the same voila_app.ipynb used by `eco webapp`, which renders
everything via eco.widgets.widget_tray.make_namespace_dashboard -- built
for Voila, which (per eco.widgets.jupyter_sidecar's own existing docstring)
has no Lumino shell to dock into at all, so there was never a "narrow
sidebar" option available there in the first place. JupyterLab DOES have a
Lumino shell, and eco already had eco.widgets.jupyter_sidecar.open_in_sidecar
for exactly this -- it just wasn't wired up to the CLI.
- NamespaceLauncherWidget now takes a generic on_open(obj, label) callback
instead of a hardcoded WidgetTray, so it can drive either a WidgetTray
panel (Voila/webapp, unchanged) or a Sidecar panel (JupyterLab, new).
- New eco.widgets.jupyter_sidecar.open_namespace_dashboard(): docks the
Namespace launcher in its own Sidecar panel, and routes each opened
device into its own Sidecar panel too -- the closest browser-side
analogue to eco desktop's dockable Namespace panel + tiled device docks.
- New eco/jupyterlab_app.ipynb (packaged; added to package-data, learned
that lesson the hard way earlier this session) uses it, with its code
cell collapsed by default (standard nbformat source_hidden metadata) --
JupyterLab has no server-side route to auto-open a real Console tab (it's
a frontend-only command, confirmed by grepping jupyterlab's own source
for any matching handler), so a notebook is still the minimal anchor tab
needed for Sidecar/ipywidgets to have something to render into; this
keeps its visible footprint to just the dashboard.
- New _write_jupyterlab_notebook(): opening an *existing* .ipynb always
uses the kernel named in its own file, not JupyterLab's server-wide
default -- so eco_cli.py now regenerates a copy with its kernelspec
pointed at the just-registered eco-<scope> kernel, same as
_register_eco_kernel's other generated files.
Voila (`eco webapp`) is unchanged -- make_namespace_dashboard/WidgetTray
remains correct there, confirmed working earlier this session.
Verified: the notebook's cell code executes without error against a real
eco-bernina kernel (same mechanism used to verify the kernel registration
earlier), a scripted Sidecar dashboard construction + simulated click
against a fake namespace, and the full test suite (338/340 -- the 2
failures are pre-existing in test_config_lazy_init.py, unrelated).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
