feat(desktop): performance and clipboard pages, a scrolling tile grid

The tile grid sits in a Flickable capped at three rows, so the fourth row
the new modules bring scrolls inside that box instead of eating the
notification space; a thin accent bar in the margin shows only when a row
is hidden. Tiles are reordered with the everyday ones first.

Performance shows the island's PerfPanel in a Page, with a tile line of CPU
and RAM and the warning dot. Perf.detailed is now a count of live PerfPanel
instances instead of a binding in the status pill: the island and the drawer
both host the panel, and a bool with two writers would let one clear it
under the other.

Clipboard reads cliphist when its page opens: search, copy on click or
Enter, delete per row, clear all behind a 3 second confirm, image entries as
thumbnails decoded once onto tmpfs. Entries reach sh as $1, never inside a
command string. A copy closes the drawer through a new Page.dismiss signal
the drawer connects like back.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 12 insertions, 4 deletions

diff --git a/desktop/README.md b/desktop/README.md
index 5536d7d..b0d3a2a 100644
--- a/desktop/README.md
+++ b/desktop/README.md
@@ -1,7 +1,8 @@
 # desktop
 
 One drawer, left of DP-1, hosting the things a desktop lets you adjust.
-Reached over IPC (`ipc call drawer toggle`), from a Hyprland bind.
+Reached over IPC (`ipc call drawer toggle`), from SUPER pressed and released
+alone, a Hyprland release bind.
 The same process also hosts the island, see `island/README.md`.
 
 The drawer opens as a grid of tiles, and clicking a tile either opens that
@@ -32,6 +33,8 @@ the IPC layer rejects. The page-less grid entry is therefore the zero-argument
     modules/vm/          libvirt state, live stats, snapshots
     modules/appearance/  a tile that opens the separate appearance shell
     modules/ai/          local AI engines, start/stop for the apps using them
+    modules/perf/        the island's performance panel at drawer size
+    modules/clipboard/   cliphist history: search, copy, delete, clear all
 
 Sound, mail, vm, network, bluetooth, kdeconnect and ai each carry their own README.
 Appearance is a tile onto the separate appearance shell, whose README covers the
@@ -105,9 +108,14 @@ click outside closes it.
 The top of the panel is an empty reserved area for the notification engine. It
 is an empty `Item` claiming the space, not a placeholder graphic, so the grid
 below it sits where it will sit once notifications arrive. The bottom is a
-fixed, never-scrolled `Flow` grid: three columns at 180px minimum, wrapping
-and adding rows up to a 3x3 ceiling for the modules that exist, in the order
-Sound, Network, Bluetooth, KDE Connect, Mail, Appearance, Machines.
+`Flow` grid of three columns inside a `Flickable` capped at three rows: a
+fourth row scrolls inside that box rather than pushing into the notification
+space, and a thin accent bar in the margin shows only when a row is hidden.
+The order is Sound, Network, Bluetooth, KDE Connect, Mail, Status,
+Performance, Clipboard, VMs, AI, Appearance, the everyday ones first.
+
+A page can close the whole drawer by emitting `dismiss` from its `Page`, as
+the clipboard does after a copy; `back` returns to the grid.
 
 ## Hyprland