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, 63 insertions, 0 deletions

diff --git a/desktop/modules/perf/PerfModule.qml b/desktop/modules/perf/PerfModule.qml
new file mode 100644
index 0000000..d0ddf35
--- /dev/null
+++ b/desktop/modules/perf/PerfModule.qml
@@ -0,0 +1,63 @@
+// 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 "../.."
+import "../../island/perf"
+
+// The island's performance panel at drawer size. Perf.qml stays in
+// island/perf and is shared: its always-on sampling already runs for the
+// island's warning dot, so this module adds no service of its own.
+Module {
+    id: mod
+
+    name: "perf"
+    label: "Performance"
+
+    // fa-tachometer, present in Inconsolata Nerd Font.
+    icon: ""
+
+    active: Perf.severity !== "ok"
+
+    tileContent: Component {
+        Row {
+            spacing: 6
+
+            Text {
+                font { family: Theme.fontFamily; pixelSize: Theme.fontSize - 4 }
+                color: Theme.subtext
+                text: "CPU " + (Perf.load === null ? "--" : Math.round(Perf.load) + "%")
+                    + " · RAM " + (Perf.mem ? Math.round(100 * Perf.mem.used / Perf.mem.total) + "%" : "--")
+            }
+
+            // The same dot as the island icon. Never the accent (AGENTS.md).
+            Rectangle {
+                anchors.verticalCenter: parent.verticalCenter
+                width: 8
+                height: 8
+                radius: 4
+                visible: Perf.severity !== "ok"
+                color: Perf.severity === "crit" ? Theme.red : Theme.yellow
+            }
+        }
+    }
+
+    page: Component {
+        Page {
+            title: "Performance"
+
+            PerfPanel {
+                width: parent.width
+            }
+
+        }
+    }
+}