feat: Enhance architecture and performance optimizations

- Updated architecture documentation to reflect changes in data layer and caching strategies.
- Implemented LRU caching for key pair generation and private key hash to improve performance.
- Refactored DatabaseService to include LRU caching for encrypted accounts, reducing database query times.
- Introduced a search bar in SelectAccountScreen for filtering accounts, enhancing user experience.
- Adjusted UI components for better spacing and consistency.
- Updated build.gradle.kts to support Java 17 and Room incremental annotation processing.
- Modified gradle.properties to include necessary JVM arguments for Java 17 compatibility.

app/src/main/java/com/rosetta/messenger/providers/AuthState.kt

@@ -292,9 +292,6 @@ class AuthStateManager(
      */
     fun getCurrentAccount(): DecryptedAccountData? = currentDecryptedAccount
 }
-        }
-    }
-}
 
 @Composable
 fun rememberAuthState(context: Context): AuthStateManager {