The conditioning and sampler slot pickers were in the Generate menu (a
window.prompt popup) with no visual path to the settings panels in the
inspector. Users found the menu selectors but never saw the Studio sampler
algorithm controls or the Chain Sampler knobs.
Fix: add conditioning and sampler section headers with inline <select> slot
pickers directly in the project inspector, immediately above their respective
settings panels. Changing the dropdown instantly shows or hides the panel for
that choice. The menubar items remain as shortcuts.
Also wrap SamplerPanel.render() in try/catch so a JS failure shows a visible
error message instead of silently aborting the rest of the inspector render.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
