Research workspaces

This is the largest and least obvious feature. A workspace is a named research project that owns its tabs, keeps a ledger of the sources you kept and the ones you rejected, and lets you write a document that cites exact places inside them.

Two rules explain everything else. A page enters the ledger when it settles, meaning it loaded and you stayed with it for twenty seconds. Closing a tab is how you reject a source, so it records a rejection and captures nothing.

Ordinary browsing is the default workspace, which is the absence of a workspace. Nothing is captured there.