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/components/SplashScreen.vue

@@ -205,7 +205,7 @@ watch([showWelcome, showLogo], ([welcome, logo]) => {
   if ((welcome || logo) && videoElement.value) {
     if (videoElement.value.paused) {
       videoElement.value.play().catch(err => {
-        console.warn('Video autoplay failed:', err)
+        if (import.meta.env.DEV) console.warn('Video autoplay failed:', err)
       })
     }
     // Add pause prevention handler once, remove when no longer needed
@@ -228,7 +228,7 @@ watch(showWelcome, (isShowing) => {
   if (isShowing && videoElement.value) {
     // Start video immediately when welcome appears
     videoElement.value.play().catch(err => {
-      console.warn('Video autoplay failed on welcome:', err)
+      if (import.meta.env.DEV) console.warn('Video autoplay failed on welcome:', err)
     })
   }
 })
@@ -414,7 +414,7 @@ function startAlienIntro() {
     playWelcomeNoderunnerSpeech()
     if (videoElement.value) {
       videoElement.value.play().catch(err => {
-        console.warn('Video autoplay failed on welcome:', err)
+        if (import.meta.env.DEV) console.warn('Video autoplay failed on welcome:', err)
       })
     }
     backgroundOpacity.value = 0.3