Visible context, invisible anxiety

Each header began showing an abbreviated current directory. Backend and frontend can now be distinguished without running `pwd` as a conditioned reflex.

The path updates as you navigate and keeps enough information to be useful without taking over half the pane. Some project paths have the spatial courtesy of a Russian novel.

Rename without wrestling

We also improved autocomplete when renaming sessions. Double-click, choose a name, done. Nobody launches this feature with epic music, but it gets used all day.

Small features build the product

A grid and a daemon build the architecture. Visible CWDs and good names build everyday trust. We need both; only one looks impressive in a diagram.