feat(#471): implement DataStore-based server configuration and self-h… (#477)

* feat(#471): implement DataStore-based server configuration and self-healing

* refactor(#471): address Sourcery feedback on ANR risk and reset method splitting

* refactor(#471): implement synchronous ServerStore initialization to fully remove ANR risk

* feat(#471): show profile name, host and port on add profile, redirect to login on save, and support shortcut login buttons for existing profiles

app/build.gradle.kts

@@ -159,6 +159,7 @@ dependencies {
 
     // Encrypted storage
     implementation(libs.androidx.security.crypto)
+    implementation(libs.androidx.datastore)
     implementation("androidx.startup:startup-runtime:1.1.1")
 
     // Local database (Room) — message persistence