jupyterlab 4.5.0b1 on Python PyPI

4.5.0b1

Show execution count in breakpoints, callstack, and sources panels while debugging in console #18003 (@arjxn-py)
Make DocumentManager dialogs customizable #17961 (@Darshan808)
Systematise how base URL is obtained to allow swapping it more easily #17952 (@krassowski)
Export the ContentProviderRegistry #17940 (@martinRenou)
Make filebrowser breadcrumbs configurable #17932 (@Darshan808)
Debugger: Visual indicator when debugger is paused #17891 (@arjxn-py)
Debugger: Show cell execution count in breakpoint/call stack/source panel #17881 (@arjxn-py)

Fix race condition renaming unnamed files on first save #17982 (@shreve)
Fix spurious scrollbar in output area due to prompt overlay #17981 (@shreve)
Fix file drag-and-drop to breadcrumbs #17975 (@Darshan808)
Delay content-visibility application to handle early CodeMirror initialization (Firefox) #17973 (@Meriem-BenIsmail)
Prevent widget closure when Save As is cancelled #17956 (@Darshan808)
Fix empty whitespace after large cell rendering #17949 (@Meriem-BenIsmail)
Fix highlighting search on output cells and previous match skips #17797 (@itsmevichu)

Bandaid: pin ipykernel on CI to pre-7.0 #17992 (@krassowski)
Add UI testing on Firefox (ignore snapshot differences) #17965 (@krassowski)
Update to Playwright 1.56.0 #17960 (@jtpio)
Temporarily pin ipykernel to avoid CI breakage with 7.0 pre-release #17957 (@arjxn-py)
Fix case of 'Debugger console' to 'Debugger Console' #17939 (@jtpio)
Improve robustness of inline-completer UI tests #17931 (@ianthomas23)

Update JupyterCon 2025 announcement links #17983 (@krassowski)
Make DocumentManager dialogs customizable #17961 (@Darshan808)
Fix parameter documentation issues in API reference #17954 (@krassowski)
Add cross-references to API reference, fix missing packages in API #17953 (@krassowski)
Systematise how base URL is obtained to allow swapping it more easily #17952 (@krassowski)