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, 41 insertions, 0 deletions

diff --git a/desktop/modules/clipboard/Clip.js b/desktop/modules/clipboard/Clip.js
new file mode 100644
index 0000000..2745bfa
--- /dev/null
+++ b/desktop/modules/clipboard/Clip.js
@@ -0,0 +1,41 @@
+.pragma library
+
+// 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.
+
+// cliphist's list output, parsed and filtered. Pure, so test_clip.js runs it
+// under node.
+
+// One entry per line of `cliphist list`: "<id>\t<preview>". The whole line is
+// kept, because decode and delete take it back verbatim on stdin. An image is
+// a preview cliphist writes as "[[ binary data <size> <type> <WxH> ]]".
+function parse(text) {
+    const out = [];
+    for (const line of text.split("\n")) {
+        const tab = line.indexOf("\t");
+        if (tab <= 0) continue;
+        const preview = line.slice(tab + 1);
+        out.push({
+            line: line,
+            id: line.slice(0, tab),
+            text: preview,
+            image: /^\[\[ binary data .* (png|jpe?g|gif|webp|bmp) /.test(preview),
+        });
+    }
+    return out;
+}
+
+// Case-insensitive substring match on the preview; an empty query keeps all.
+function filter(entries, query) {
+    const q = query.trim().toLowerCase();
+    if (q === "") return entries;
+    return entries.filter(e => e.text.toLowerCase().indexOf(q) >= 0);
+}