fix: prevent encryption key loss and IndexedDB connection errors

- Disable timer-based key rotation for Double Ratchet mode
- Auto-reinitialize encryption keys when missing but ECDH available
- Preserve active keys during periodic cleanup in ratchet sessions
- Fix IndexedDB "database closing" errors with connection checking
- Add individual transactions per queue item to prevent race conditions

src/components/ui/Header.jsx

@@ -539,7 +539,7 @@ const EnhancedMinimalHeader = ({
                         React.createElement('p', {
                             key: 'subtitle',
                             className: 'text-xs sm:text-sm text-muted hidden sm:block'
-                        }, 'End-to-end freedom v4.4.99')
+                        }, 'End-to-end freedom v4.5.22')
                     ])
                 ]),
 

src/components/ui/Roadmap.jsx

@@ -75,7 +75,7 @@ function Roadmap() {
         
                     // current and future phases
                     {
-                                          version: "v4.4.99",
+                                          version: "v4.5.22",
                         title: "Enhanced Security Edition",
                         status: "current",
                         date: "Now",