fix: Statistik-Tab-Leiste scrollt eigenstaendig horizontal (Mobile)

frontend/src/tools/statistik.jsx

@@ -521,12 +521,13 @@ export default function Statistik({ mobile, user, toast }) {
       </div>
 
       {/* ── Tabs ── */}
-      <div style={{display:'flex',gap:4,marginBottom:16}}>
+      <div style={{display:'flex',gap:4,marginBottom:16,overflowX:'auto',overflowY:'hidden',
+        scrollbarWidth:'none',WebkitOverflowScrolling:'touch',paddingBottom:2}}>
         {[['overview','📈 Übersicht'],['revenue','💰 Einnahmen'],['expenses','💸 Ausgaben'],['orders','📦 Bestellungen'],['makerworld','🖨️ MakerWorld']].map(([id,label])=>(
           <button key={id} onClick={()=>setTab(id)} style={{
             background: tab===id ? 'rgba(255,255,255,0.08)' : 'transparent',
             border: `1px solid ${tab===id ? 'rgba(255,255,255,0.2)' : 'rgba(255,255,255,0.08)'}`,
-            borderRadius:8, padding:'6px 14px',
+            borderRadius:8, padding:'6px 14px', flexShrink:0, whiteSpace:'nowrap',
             color: tab===id ? '#fff' : 'rgba(255,255,255,0.4)',
             fontFamily:'monospace', fontSize:11, cursor:'pointer',
           }}>{label}</button>