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, 39 insertions, 0 deletions

diff --git a/desktop/modules/clipboard/ClipboardModule.qml b/desktop/modules/clipboard/ClipboardModule.qml
new file mode 100644
index 0000000..25a8cc3
--- /dev/null
+++ b/desktop/modules/clipboard/ClipboardModule.qml
@@ -0,0 +1,39 @@
+// Copyright (C) 2026 Danilo M. <danix@danix.xyz>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+import QtQuick
+import "../.."
+
+// The clipboard history kept by `wl-paste --watch cliphist store`, which
+// autostart runs. Nothing runs here while the drawer is closed: the page
+// reads cliphist when it opens.
+Module {
+    name: "clipboard"
+    label: "Clipboard"
+
+    // fa-clipboard, present in Inconsolata Nerd Font.
+    icon: ""
+
+    page: Component {
+        Page {
+            id: pg
+            title: "Clipboard"
+            ClipboardPage {
+                width: parent.width
+                // Page wraps its content in a ScrollView. The list is
+                // virtualized and scrolls itself, so it takes exactly the
+                // visible height and the outer view never scrolls.
+                height: pg.height - 57
+                onCopied: pg.dismiss()
+            }
+        }
+    }
+}