Since we're starting from scratch here, I believe we can do a rolling implementation where we deploy components of the toolbar piecemeal to get rolling feedback and avoid big patches.

Components/features:

• minimize, close, and open controls (T340130)
• information button and menus (T349386)
• wikilove button and menus (T349387)
• mark as reviewed button and menus (T349388)
• maintenance tags button and menus (T349389)
• deletion tags button and menus (T349390)
• next article in queue button (T340130)

Paraphrased from T335074:

• Get the Page Curation toolbar working with Vue, behind a url parameter for patroller feedback. (T340130)
• Once the Vue Page Curation toolbar is working well and is confirmed to be a good copy of the old Page Curation toolbar, deploy the Vue Page Curation toolbar to replace the old Page Curation toolbar