fix(store,audit,workspace): usertest low-findings tail (0.72.1)

- Store hero: 'TODAY' badge only for an operator-accepted story; the
  rotating compiled-in fallback deck now says 'FEATURED' (no false
  freshness claim). Policy as a top-level function with unit tests.
- Audit filter chips: standard label typography instead of mono —
  mono stays reserved for paths and identifiers.
- DE chain wording: 'Hash-Kette geprüft' as the one confirmation term
  (audit header now matches the doctor pill); 'intakt' stays the
  state headline. EN was already consistent.
- Workspace switcher: contrast bump for the sealed-area 'stopped'
  label.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

lib/pages/audit.dart

@@ -620,9 +620,11 @@ class _ChipButtonState extends State<_ChipButton> {
           ),
           child: Text(
             widget.label,
-            style: ChainTheme.mono(
-              size: 11,
-              weight: widget.selected ? FontWeight.w500 : FontWeight.w400,
+            // UI label, not a value — mono is reserved for
+            // paths/identifiers (usertest finding: the chips
+            // read as foreign bodies in the header).
+            style: theme.textTheme.labelMedium?.copyWith(
+              fontWeight: widget.selected ? FontWeight.w600 : FontWeight.w400,
               color: fg,
             ),
           ),

lib/pages/store.dart

@@ -3207,6 +3207,13 @@ class _ScreenshotPlaceholder extends StatelessWidget {
 /// not abstract platform philosophy. Architecture education
 /// (sandbox model, hash-chained audit, air-gap posture) lives
 /// on the dedicated Welcome page, not in the store carousel.
+/// Whether the hero deck may wear the date-bound "TODAY" badge.
+/// Only a single, operator-accepted story qualifies — the
+/// compiled-in fallback deck rotates unchanged across sessions
+/// and must not claim freshness ("FEATURED" instead). Top-level
+/// so the policy stays unit-testable.
+bool storeDeckIsAcceptedToday(int totalCount) => totalCount == 1;
+
 const List<TodayStoryData> _kFallbackTodayStories = <TodayStoryData>[
   TodayStoryData(
     badgeEn: 'MCP',
@@ -3433,7 +3440,12 @@ class _StoreTodayHero extends StatelessWidget {
                   runSpacing: 4,
                   crossAxisAlignment: WrapCrossAlignment.center,
                   children: [
-                    ChainPill(label: l.storeTodayBadge, tone: ChainPillTone.accent),
+                    ChainPill(
+                      label: storeDeckIsAcceptedToday(totalCount)
+                          ? l.storeTodayBadge
+                          : l.storeFeaturedBadge,
+                      tone: ChainPillTone.accent,
+                    ),
                     Text(
                       badge,
                       style: theme.textTheme.labelSmall?.copyWith(