Rebrand as Playpen.

README.md

@@ -1,10 +1,13 @@
-# vtabs
+# Playpen
 
-A proof-of-concept terminal emulator with **vertical tabs**, built on
-[libghostty-vt](https://github.com/ghostty-org/ghostty) and GTK4/libadwaita.
+A proof-of-concept workspace built on
+[libghostty-vt](https://github.com/ghostty-org/ghostty) and GTK4/libadwaita:
+**vertical tabs**, each holding a split tree of terminal and web panes, with
+**saved layouts** that open a whole arrangement — directories, scripts and all —
+in one go.
 
 The sidebar holds the window controls, a new-tab button, and one row per tab —
-the layout Zen Browser uses for vertical tabs — with the terminal inset to its
+the layout Zen Browser uses for vertical tabs — with the content inset to its
 right.
 
 ## Quick start
@@ -23,7 +26,7 @@ mise run install     # builds release, installs into ~/.local
 mise run uninstall
 ```
 
-That puts the binary in `~/.local/libexec/vtabs`, a launcher on `~/.local/bin`,
+That puts the binary in `~/.local/libexec/playpen`, a launcher on `~/.local/bin`,
 a desktop entry in `~/.local/share/applications`, and the icon in the hicolor
 theme, then refreshes the desktop and icon caches. `mise tasks` lists the rest
 (`build`, `run`, `fmt`, `screenshot`).
@@ -200,7 +203,7 @@ because shells that set up line editing discard whatever was buffered while
 they were initializing. The shell's first output is the signal that it is
 reading, so that is when the script goes in.
 
-Layouts live in `~/.config/vtabs/layouts.json` (or `$XDG_CONFIG_HOME`), and the
+Layouts live in `~/.config/playpen/layouts.json` (or `$XDG_CONFIG_HOME`), and the
 file is meant to be edited by hand as well — *Reload from disk* picks up
 changes. It is JSON because the app writes it too, and a format that
 round-trips without a hand-written emitter is worth more here than a prettier