fix(rows): open on the first tap on iPhone, and round the hover highlight

On a touch screen a :hover on the tap target makes iOS spend the first tap
applying the hover and only open on the second — the double-tap Kristian hit
on tasks (and notes). The row hover is gated behind @media (hover: hover)
now, so a touch has no hover to apply and the first tap opens. The note
row's action buttons, which the hover used to reveal, are shown outright on
touch instead. And the task-row hover highlight is a rounded box (border
radius on the row), the same corner as a note in the list.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

web/src/app.css

@@ -242,6 +242,7 @@
 	--note-on-ink: #1e1e1e; /* dark text on the gold */
 	--nav-active-ink: #1e1e1e; /* dark text on the amber menu item */
 	--heading-ink: #8a8e90; /* PROJEKTER and the group names — quiet grey */
+	--note-group-bg: #2d3133; /* day separators take the menu's resting grey, not the darker ground */
 
 	--p1: #cf6b6b;
 	--p2: #d69f5c;

web/src/lib/components/TaskRow.svelte

@@ -228,13 +228,21 @@
 		align-items: flex-start;
 		padding: var(--s3) var(--s2);
 		border-bottom: 1px solid var(--line);
+		border-radius: var(--radius);
 		transition:
 			opacity var(--medium) var(--ease),
 			transform var(--medium) var(--ease);
 	}
 
-	.row:hover {
+	/* Hover only where there is a real pointer. On a touch screen a :hover on the tap
-		background: var(--surface);
+	   target makes iOS spend the first tap applying the hover and only open on the
+	   second — the "double-tap" on iPhone. With no hover to apply, the first tap opens
+	   the task. The rounded corners are on the row itself, so the highlight is a
+	   rounded box like a note in the list. */
+	@media (hover: hover) {
+		.row:hover {
+			background: var(--surface);
+		}
 	}
 
 	/* The exit: a short lift and fade, so completing something reads as the task

web/src/routes/noter/+page.svelte

@@ -1406,7 +1406,10 @@
 		top: 0;
 		z-index: 1;
 		margin: 0 0 var(--s1);
-		background: var(--ground);
+		/* --ground everywhere but Kul, where the ground is the darkest thing on screen
+		   and a day separator on it reads as a dark bar. There it takes the menu's own
+		   resting colour instead, via --note-group-bg. */
+		background: var(--note-group-bg, var(--ground));
 		border-radius: var(--radius);
 	}
 
@@ -1492,8 +1495,21 @@
 		white-space: nowrap;
 	}
 
-	.row:hover {
+	/* Pointer only. On a touch screen a :hover on the tap target costs a tap — iOS
-		background: var(--surface);
+	   spends the first applying the hover and opens on the second. Gated, the first
+	   tap opens the note. The row's buttons are shown outright on touch below, since
+	   there is no hover to reveal them. */
+	@media (hover: hover) {
+		.row:hover {
+			background: var(--surface);
+		}
+	}
+
+	@media (hover: none) {
+		.star,
+		.archive-one {
+			opacity: 1;
+		}
 	}
 
 	.row.on {