Lagebild: Stand-Karte entfernt (Datum in Titel), Control-Bar nicht mehr sticky, Timeline-Dropdown Grid-Layout

- Stand stat card entfernt, Datum als Span neben incident-title
- Hero-Stats Grid von 4 auf 3 Spalten, max-width 650px
- Control-Bar: position sticky/top/z-index entfernt
- Timeline-Dropdown: flex -> CSS grid (auto-fill minmax 210px)
- Responsive: Dropdown-Grid für Mobile angepasst (minmax 170px)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lagebild/lagebild.js

@@ -58,11 +58,12 @@ var Lagebild = {
     /* ===== HERO ===== */
     renderHero: function() {
         var d = this.data;
-        document.getElementById('incident-title').textContent = this.fixUmlauts(d.incident.title);
+        document.getElementById('incident-title').innerHTML =
+            this.esc(this.fixUmlauts(d.incident.title)) +
+            ' <span class="hero-date-info">&mdash; Stand: ' + this.fmtDateOnly(d.generated_at) + '</span>';
 
-        // Stat Cards
+        // Stat Cards (3: Artikel, Quellen, Faktenchecks)
         var statsHtml = '';
-        statsHtml += this.statCard(this.icons.clock, this.fmtDateOnly(d.generated_at), 'Stand');
         statsHtml += this.statCard(this.icons.fileText, '<span class="count-up" data-target="' + d.incident.article_count + '">0</span>', 'Artikel');
         statsHtml += this.statCard(this.icons.globe, '<span class="count-up" data-target="' + d.incident.source_count + '">0</span>', 'Quellen');
         statsHtml += this.statCard(this.icons.shieldCheck, '<span class="count-up" data-target="' + d.incident.factcheck_count + '">0</span>', 'Faktenchecks');