Dashboard: stop flex children shrinking (bar text overflowed), wrap the bar, gate saves on loaded layout, fix double v in footer

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

web/src/Shell.tsx

@@ -98,7 +98,7 @@ export default function Shell({ me, onLoggedOut }: { me: Me; onLoggedOut: () =>
         setCtrl={(v) => handles.current[activeTerm.id]?.armCtrl(v)} />}
 
       <footer className="footer">
-        <span>v{me.version}</span>
+        <span>{me.version.startsWith('v') ? me.version : 'v' + me.version}</span>
         <span>up {fmtUptime(me.uptime)}</span>
         <span className="spacer" />
         <span className="muted">{view === 'dashboard' ? 'Dashboard' : activeTerm ? activeTerm.name : ''}</span>