Add optional compact tagline styling for source context

1 files changed, 5 insertions, 3 deletions

diff --git a/docs/detached.md b/docs/detached.md
index 4cb3d9d6..1f56d24f 100644
--- a/docs/detached.md
+++ b/docs/detached.md
@@ -49,9 +49,11 @@ write session files or install file watches.
 `src/detached/wire.zig` owns the versioned frontend protocol. Frames are full
 grids or changes relative to each frontend's last queued frame. A new
 attachment receives a full grid. Output queues and per-poll work are bounded;
-a lagging frontend cannot hold the session's event loop. Protocol version 3
-also carries the pointer shape, including updates when no grid cells change,
-so PDF link hover uses the same pointing-hand cue in attached graphical clients.
+a lagging frontend cannot hold the session's event loop. Protocol version 4
+also carries the pointer shape and compact source-context body layers. Pointer
+updates work even when no grid cells change, and graphical clients use the
+same compact row geometry for drawing and mouse input. Terminal clients retain
+the ordinary fixed grid.
 
 `zig build unit-test` covers encoding, session ownership, real frontend
 connections, worker completion and Restore. `zig build fs-test` drives