Answer a question card as one act, and mark the press that made it

Picking an option marked nothing until the answer had crossed the tunnel,
been recorded and come back as an event, so the card sat unchanged for most
of a second after a tap. What the reader has picked is now the card's own
state and shows at once; a Submit at the foot sends every question the tool
is waiting on, greyed until all of them have an answer and a spinner while
the request is out.

Several questions are paged rather than stacked, with the count and a pair
of arrows on the right, because three questions with four described options
each is several screens and the reader scrolls past the one they are
answering to reach the button that sends it.

A permission ask keeps its single tap -- two bare words are not worth a
submit step -- and marks what was pressed until the request settles, so the
mark either stands on the recorded answer or goes away with the failure.

Chevron draws all four directions from one description of the shape, since
the pager needed two more of them.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

app/androidApp/src/main/kotlin/com/example/aiapp/NerdIcons.kt

@@ -183,13 +183,34 @@ fun GlyphButton(
     modifier: Modifier = Modifier,
     enabled: Boolean = true,
     colour: Color = MaterialTheme.colorScheme.primary,
+) {
+    MarkButton(label, onClick, modifier, enabled) {
+        Glyph(glyph, colour = if (enabled) colour else MaterialTheme.colorScheme.outline)
+    }
+}
+
+/**
+ * The same square, around a mark that is not a glyph.
+ *
+ * A [Chevron] is drawn rather than set in a font, and a pair of them used as buttons has to be the
+ * size, spacing and touch target every other icon button on this app's headers already is -- so
+ * this is [GlyphButton] with the mark left to the caller rather than a second set of measurements
+ * beside it. The caller still owes it a [label]: nothing here draws a word.
+ */
+@Composable
+fun MarkButton(
+    label: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    mark: @Composable () -> Unit,
 ) {
     IconButton(
         onClick = onClick,
         enabled = enabled,
         modifier = modifier.size(GLYPH_BUTTON_SIZE).semantics { contentDescription = label },
     ) {
-        Glyph(glyph, colour = if (enabled) colour else MaterialTheme.colorScheme.outline)
+        mark()
     }
 }