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@@ -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