Update version to 4.3.120 UX/UI

src/components/ui/Header.jsx

@@ -561,7 +561,7 @@ const EnhancedMinimalHeader = ({
                         React.createElement('p', {
                             key: 'subtitle',
                             className: 'text-xs sm:text-sm text-muted hidden sm:block'
-                        }, 'End-to-end freedom v4.2.12')
+                        }, 'End-to-end freedom v4.3.120')
                     ])
                 ]),
 

src/components/ui/Roadmap.jsx

@@ -75,7 +75,7 @@ function Roadmap() {
         
                     // current and future phases
                     {
-                                          version: "v4.2.12",
+                                          version: "v4.3.120",
                         title: "Enhanced Security Edition",
                         status: "current",
                         date: "Now",

src/components/ui/SessionTimer.jsx

@@ -1,4 +1,4 @@
-// SessionTimer Component - v4.2.12 - ECDH + DTLS + SAS
+// SessionTimer Component - v4.3.120 - ECDH + DTLS + SAS
 const SessionTimer = ({ timeLeft, sessionType, sessionManager, onDisconnect }) => {
     const [currentTime, setCurrentTime] = React.useState(timeLeft || 0);
     const [showExpiredMessage, setShowExpiredMessage] = React.useState(false);