feat(perf): the performance page moves to the drawer, with ~/.cache

The island's performance icon and panel are gone: the drawer page covers
them. With only one host left, the panel drops its three-column grid for
one card per row at a larger size, since the page scrolls; temperatures
get a card of their own as tiles. The files move from island/perf to
modules/perf.

A cache card ports conky's: ~/.cache and its five largest children,
measured with du each time the page opens (28ms over 2 GiB here) rather
than read from conky's 15-minute sampler file. The largest is yellow,
red past half the total, as conky had it.

The warning dot now shows only on the drawer tile.

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

1 files changed, 3 insertions, 5 deletions

diff --git a/desktop/modules/perf/PerfModule.qml b/desktop/modules/perf/PerfModule.qml
index d0ddf35..e596f9a 100644
--- a/desktop/modules/perf/PerfModule.qml
+++ b/desktop/modules/perf/PerfModule.qml
@@ -11,11 +11,9 @@
 
 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.
+// The figures the conky dashboard used to show, as a scrolling page. Perf.qml
+// samples them; the tile's dot is its severity.
 Module {
     id: mod
 
@@ -38,7 +36,7 @@ Module {
                     + " · RAM " + (Perf.mem ? Math.round(100 * Perf.mem.used / Perf.mem.total) + "%" : "--")
             }
 
-            // The same dot as the island icon. Never the accent (AGENTS.md).
+            // The worst severity. Never the accent (AGENTS.md).
             Rectangle {
                 anchors.verticalCenter: parent.verticalCenter
                 width: 8