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, 47 insertions, 0 deletions

diff --git a/desktop/modules/clipboard/test_clip.js b/desktop/modules/clipboard/test_clip.js
new file mode 100644
index 0000000..e4525f8
--- /dev/null
+++ b/desktop/modules/clipboard/test_clip.js
@@ -0,0 +1,47 @@
+// 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.
+
+// Run: node desktop/modules/clipboard/test_clip.js
+// Clip.js is a QML library, so its .pragma line is stripped before node
+// evaluates it, as test_perf.js does for Perf.js.
+
+const fs = require("fs");
+const assert = require("assert");
+
+const src = fs.readFileSync(__dirname + "/Clip.js", "utf8")
+    .replace(/^\.pragma library$/m, "");
+const C = new Function(src + "\nreturn { parse, filter };")();
+
+const list = [
+    "812\tgit push --force-with-lease",
+    "811\t[[ binary data 2 MiB png 2560x1080 ]]",
+    "810\tA line\twith a tab",
+    "",
+    "garbage without a tab",
+].join("\n");
+const e = C.parse(list);
+
+assert.strictEqual(e.length, 3);
+assert.deepStrictEqual(e[0], { line: "812\tgit push --force-with-lease", id: "812",
+                               text: "git push --force-with-lease", image: false });
+assert.strictEqual(e[1].image, true);
+// Only the first tab separates the id; the rest is the text, and the line is
+// kept whole for decode.
+assert.strictEqual(e[2].text, "A line\twith a tab");
+assert.strictEqual(e[2].line, "810\tA line\twith a tab");
+// Text that merely mentions binary data is not an image.
+assert.strictEqual(C.parse("9\tthe [[ binary data ]] marker")[0].image, false);
+
+assert.strictEqual(C.filter(e, "").length, 3);
+assert.deepStrictEqual(C.filter(e, "  PUSH ").map(x => x.id), ["812"]);
+assert.deepStrictEqual(C.filter(e, "nothing"), []);
+
+console.log("test_clip: ok");