Terminal-app design (ADR 0005) + disk-write controller

- ADR 0005: persistent home terminal (full-screen, chrome-less,
  bottom-pinned), F1 terminal windows, per-instance vt/tty/shell,
  queue-based input for all terminals, and the disk controller
- Glossary: add the Terminal term; update Task/App for the new model
- Add a re-entrant disk lock (DiskGuard over the preemption-depth
  counter) and wrap all fs/fat mutating operations per-call

1 files changed, 2 insertions, 2 deletions

diff --git a/docs/adr/0004-windowed-gui-and-compositor.md b/docs/adr/0004-windowed-gui-and-compositor.md
index 3476fab..87f637e 100644
--- a/docs/adr/0004-windowed-gui-and-compositor.md
+++ b/docs/adr/0004-windowed-gui-and-compositor.md
@@ -74,5 +74,5 @@ Introduce an overlapping-window GUI:
 - The existing `vt` dirty-cell path is demoted to a per-terminal-window
   trigger; the window manager becomes the only writer of the framebuffer
   (plus the cursor overlay).
-- Open (not yet decided): the terminal-app design (per-instance vt + shell),
-  and the save/image-format + image-viewer design (both deferred).
+- Open (not yet decided): the save/image-format + image-viewer design
+  (deferred).  The terminal-app design is captured in ADR 0005.