54-int: battery reds from the union's own intended changes -- z-scale accepts a window held below the top chrome on a tablet-wide screen (54 f); sheet-handoff tests hand-off only on a list long enough to absorb it (Explorer empty state + Add files overflows a short sheet by ~40 px)

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

Author: AlexZ005

tests/e2e/sheet-handoff.test.cjs

@@ -183,7 +183,10 @@ h.run(async () => {
 		 *  a dock tab's frame also holds the panel's header, which has nothing to scroll) */
 		const inY = (y) => Math.max(bodyR ? bodyR.top + 12 : s0.top + 40, Math.min(s0.bottom - 12, y));
 		const sc = await scrollerAt(bx, by);
-		const scrolls = !!sc && sc.max > 30;
+		// 54-int: a list must be able to ABSORB the gestures below (step 1 asks for > 40 px of scroll, the hand-back
+		// travels ~130 px past the start); a body that scrolls only a little (the Explorer's empty state with its
+		// "Add files…" button, 81 X1, overflows a 248 px sheet by ~40 px) hands the rest to the sheet by design
+		const scrolls = !!sc && sc.max > 140;
 		// --- 1. drag UP on the list: the list scrolls, the sheet stays ---
 		if (scrolls) {
 			await setProbeTop(0);
@@ -202,7 +205,7 @@ h.run(async () => {
 			h.check(s2 && Math.abs(s2.h - s0.h) < 4, `${name}: ...and does not move the sheet (${Math.round(s0.h)} -> ${Math.round(s2?.h ?? 0)})`);
 			h.check((await probeTop()) < before, `${name}: ...the list scrolled back toward its top (${before} -> ${await probeTop()})`);
 		} else {
-			h.check(true, `${name}: its body does not scroll at this height (${JSON.stringify(sc)}) — the body is the sheet`);
+			h.check(true, `${name}: its body does not scroll (far) at this height (${JSON.stringify(sc)}) — the body is the sheet`);
 		}
 		// --- 3. at the top: a slow drag down moves the SHEET with the finger ---
 		if (scrolls) await setProbeTop(0);

tests/e2e/z-scale-layering.test.cjs

@@ -121,13 +121,14 @@ h.run(async () => {
 			const y = r.top + r.height / 2;
 			const w = /** @type {HTMLElement} */ (document.querySelector('#whats-new-window'));
 			const wr = w.getBoundingClientRect();
-			// a desktop window is clamped below the top bar (dragWindow), so it may simply not reach the logo
-			if (x < wr.left || x > wr.right || y < wr.top || y > wr.bottom) return 'not under the window';
+			// a window is clamped below the top chrome (dragWindow's topChromeFloor: desktop, and since 54 f a
+			// tablet-wide screen too), so it may simply not reach the logo -- only when it was HELD down (top > 0)
+			if (x < wr.left || x > wr.right || y < wr.top || y > wr.bottom) return wr.top > 0 ? 'not under the window' : 'missed the logo at top 0';
 			const hit = document.elementFromPoint(x, y);
 			return w.contains(hit) ? 'covered' : hit?.id || hit?.tagName;
 		});
 		h.check(
-			logoUnder === 'covered' || (dev === 'desktop' && logoUnder === 'not under the window'),
+			logoUnder === 'covered' || (dev !== 'folded' && logoUnder === 'not under the window'),
 			`${dev}: where What's new overlaps the logo, a press lands in What's new (${logoUnder})`
 		);
 		// and its own close still works by a real click