android: reorder from the sheet — a playlist row up, down or to the top; a queue row up or down

Without a drag: a playlist row's sheet moves it up, down or to the top and
persists the whole order in one call (playlist_set_order, as the desktop's
drop does); a queue row's sheet moves it up or down, never past the track
playing. Also src-tauri/android/ship.sh — one round end to end: the mock
walk, the embedded build installed, the phone walk, the commit, each step
gated on the one before.

src/lib/mockLibrary.js

@@ -185,6 +185,17 @@ function mockPlaylists(cmd, args) {
         plTouch(p);
         return Promise.resolve(rows.map((r) => r.id));
     }
+    if (cmd === "playlist_set_order") {
+        const p = plOf(args);
+        if (!p) return Promise.reject(new Error("playlist_set_order: no such playlist"));
+        const by = new Map((PL_ITEMS[p.id] || []).map((x) => [x.id, x]));
+        const next = (args?.orderedIds || []).map(Number).map((id) => by.get(id)).filter(Boolean);
+        for (const x of PL_ITEMS[p.id] || []) if (!next.includes(x)) next.push(x);
+        PL_ITEMS[p.id] = next;
+        next.forEach((x, i) => { x.position = i; });
+        plTouch(p);
+        return Promise.resolve();
+    }
     if (cmd === "playlist_relink_item") {
         const p = plOf(args);
         const it = p ? (PL_ITEMS[p.id] || []).find((x) => x.id === Number(args?.itemId)) : null;