feat(ui): scope, freshness and jurist-review badges + live empty-state

Adds three dark-first chip badges in the TierBadge pattern:
- Jurisdiction (Berlin/DE/EU/International) — derived from the ELI,
  surfaced on the norms list, detail header and heatmap chips/hover.
- Freshness (aktuell/geaendert/ungeprueft) — flags norms amended
  upstream (standDate + sourceSha256); renders only when stale.
- Jurist review — marks evaluations a trusted jurist has confirmed
  (optional; the figure stands on its own).
Models gain Jurisdiction/Freshness enums, Norm.freshness/supersededNote
and Evaluation.reviewedBy/reviewedAt; HubRepository parses them from
the flow bag (ELI fallback). HeatmapPage shows a real empty-state
(hub-down vs no-evaluations) instead of a blank plot, and connect()
no longer throws on a failed probe.

Signed-off-by: flemming-it <sf@flemming.it>

app/lib/pages/norms_list_page.dart

@@ -4,7 +4,10 @@ import '../data/models.dart';
 import '../data/repository.dart';
 import '../theme/reclaim_tokens.dart';
 import '../widgets/mode_banner.dart';
+import '../widgets/freshness_badge.dart';
+import '../widgets/jurisdiction_badge.dart';
 import '../widgets/reclaim_card.dart';
+import '../widgets/review_badge.dart';
 import '../widgets/tier_badge.dart';
 import 'norm_detail_page.dart';
 
@@ -108,7 +111,20 @@ class _NormRow extends StatelessWidget {
                     ),
                   ),
                   const SizedBox(height: ReclaimSpace.sm),
-                  TierBadge(tier: evaluation.tierLowest),
+                  Wrap(
+                    spacing: ReclaimSpace.sm,
+                    runSpacing: ReclaimSpace.xs,
+                    children: [
+                      JurisdictionBadge(
+                          jurisdiction: evaluation.norm.jurisdiction),
+                      TierBadge(tier: evaluation.tierLowest),
+                      FreshnessBadge(
+                        freshness: evaluation.norm.freshness,
+                        note: evaluation.norm.supersededNote,
+                      ),
+                      ReviewBadge(evaluation: evaluation),
+                    ],
+                  ),
                 ],
               ),
             ),