/* ── the card is still in the shade ───────────────────────
               What a small icon the shade cannot inflate, or a large icon
               that throws while the notification is built, actually does:
               the card is never posted at all. So read it back out of the
               same dump the downloads notice uses — our package, on the
               `playback` channel, with the playing track's own title on it.
               The title is taken from the player on BOTH sides of the dump
               because a track may cross while it runs, and either answer is
               a correct one; both sides come from the live app at the same
               moment, so a real core answering faster than the mock cannot
               make this disagree with itself.

               It runs after `resumed` has asserted status === "playing", so
               the ongoing card is settled state rather than a race, and it
               sits above `media-keys`, which proves the transport still
               answers through the session.

               What this canNOT prove: the GLYPH. `dumpsys notification`
               prints the icon's resource id and never a pixel, so a correct
               falcon and a white rectangle read identically here. That one
               is a screenshot. */
            let cardBefore = await cdp.evaluate(PLAYER);
            let cardNote = shadeNotice();
            let cardAfter = await cdp.evaluate(PLAYER);
            const cardAgrees = () => /playback/.test(cardNote.shadeChans) && !!cardNote.shadeCard
                && (cardNote.shadeCard === cardBefore?.title || cardNote.shadeCard === cardAfter?.title);
            if (!cardAgrees()) {
                /* the one race the two reads do not cover: `push()` in
                   media.svelte.js is debounced, so the card trails the
                   player by a moment, and a track crossing exactly here
                   shows the player two NEW titles and the shade the old
                   one. Let it settle and look once more. A card that is
                   not posted at all fails this the second time too. */
                await sleep(2000);
                cardBefore = await cdp.evaluate(PLAYER);
                cardNote = shadeNotice();
                cardAfter = await cdp.evaluate(PLAYER);
            }
            const cardOk = cardAgrees();
            const cardSeen = { chans: cardNote.shadeChans, card: cardNote.shadeCard, title: cardAfter?.title ?? null };
            if (!cardOk) problems.push("EXPECT media-card " + JSON.stringify(cardSeen));
            console.log((cardOk ? "  ok  " : " FAIL ") + "media-card".padEnd(16) + " " + JSON.stringify(cardSeen));