refactor: update dependencies and remove unused code

- Added new dependencies: `adler2`, `crc32fast`, `flate2`, `miniz_oxide`, and `libredox`.
- Updated existing dependencies: `tokio-rustls` to version 0.26.4 and `filetime` to version 0.2.27.
- Removed the `backup.rs` file as it is no longer needed.
- Introduced tests for configuration and credential management.
- Enhanced the `identity` module to generate W3C compliant DID documents.

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

neode-ui/src/composables/useMessageToast.ts

@@ -48,7 +48,7 @@ export function useMessageToast() {
         stopPolling()
         return
       }
-      console.error('Failed to load messages:', e)
+      if (import.meta.env.DEV) console.error('Failed to load messages:', e)
     } finally {
       loadingMessages.value = false
     }