fix(ui): use folds Text priority instead of raw opacity (native-cinny nit)

Replaced raw style={{ opacity: N }} de-emphasis on folds <Text> with the
`priority` prop across search, schedule, profile, and tray UI. Left the cases
that aren't Text-priority candidates (an Icon opacity, a Box-row opacity, and a
Text with an explicit color token).

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

src/app/features/room/ScheduleMessageModal.tsx

@@ -241,7 +241,7 @@ export function ScheduleMessageModal({
                 <Text size="L400">Send at</Text>
                 <Box gap="200">
                   <Box direction="Column" gap="100" style={{ flex: 1 }}>
-                    <Text as="label" htmlFor="schedule-date" size="T200" style={{ opacity: 0.7 }}>
+                    <Text as="label" htmlFor="schedule-date" size="T200" priority="400">
                       Date
                     </Text>
                     <input
@@ -253,7 +253,7 @@ export function ScheduleMessageModal({
                     />
                   </Box>
                   <Box direction="Column" gap="100" style={{ flex: 1 }}>
-                    <Text as="label" htmlFor="schedule-time" size="T200" style={{ opacity: 0.7 }}>
+                    <Text as="label" htmlFor="schedule-time" size="T200" priority="400">
                       Time
                     </Text>
                     <input