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/settings/account/Profile.tsx

@@ -542,7 +542,7 @@ function ProfileStatus() {
           </Text>
         )}
         <Box alignItems="Center" gap="200">
-          <Text size="T200" style={{ opacity: 0.6, whiteSpace: 'nowrap', flexShrink: 0 }}>
+          <Text size="T200" priority="300" style={{ whiteSpace: 'nowrap', flexShrink: 0 }}>
             Auto-clear after:
           </Text>
           <SettingsSelect

src/app/features/settings/account/ProfileDecoration.tsx

@@ -218,7 +218,7 @@ export function ProfileDecoration() {
         >
           {DECORATION_CATEGORIES.map((category) => (
             <div key={category.id} style={{ display: 'flex', flexDirection: 'column', gap: 10 }}>
-              <Text size="L400" style={{ opacity: 0.7 }}>
+              <Text size="L400" priority="400">
                 {category.label}
               </Text>
               <div