fix: implement in-memory token caching to avoid redundant prefs decryptions (#320)

* fix: implement in-memory token caching to avoid redundant prefs decryptions

Resolves #277

Previously, the `AuthManager.getToken()` method decrypted the entire
`EncryptedSharedPreferences` file on every call. Because this method is
used in the OkHttp interceptor on every HTTP/WS request, and frequently
during navigation, it introduced 10-30ms of redundant work per call.
This compounded to noticeable UI lag (e.g., during chat session switches).

This commit implements thread-safe in-memory caching for the auth token
inside `AuthManager`.
- Added a `@Volatile` `cachedToken` and `tokenInitialized` flag.
- Modified `getToken()` to return the cached value after initial evaluation,
  using double-checked locking (`synchronized(this)`) to avoid race conditions.
- Updated `setToken()` and `setSelectedProfileId()` to correctly invalidate
  or update the cache.
- Added comprehensive unit tests in `AuthManagerTest.kt` to verify caching
  behavior and proper invalidation upon profile switches.

* fix: implement in-memory token caching to avoid redundant prefs decryptions

Resolves #277

Previously, the `AuthManager.getToken()` method decrypted the entire
`EncryptedSharedPreferences` file on every call. Because this method is
used in the OkHttp interceptor on every HTTP/WS request, and frequently
during navigation, it introduced 10-30ms of redundant work per call.
This compounded to noticeable UI lag (e.g., during chat session switches).

This commit implements thread-safe in-memory caching for the auth token
inside `AuthManager`.
- Added a `@Volatile` `cachedToken` and `tokenInitialized` flag.
- Modified `getToken()` to return the cached value after initial evaluation,
  using double-checked locking (`synchronized(this)`) to avoid race conditions.
- Updated `setToken()` and `setSelectedProfileId()` to correctly invalidate
  or update the cache.
- Added comprehensive unit tests in `AuthManagerTest.kt` to verify caching
  behavior and proper invalidation upon profile switches.

* fix: implement in-memory token caching to avoid redundant prefs decryptions

Resolves #277

Previously, the `AuthManager.getToken()` method decrypted the entire
`EncryptedSharedPreferences` file on every call. Because this method is
used in the OkHttp interceptor on every HTTP/WS request, and frequently
during navigation, it introduced 10-30ms of redundant work per call.
This compounded to noticeable UI lag (e.g., during chat session switches).

This commit implements thread-safe in-memory caching for the auth token
inside `AuthManager`.
- Added a `@Volatile` `cachedToken` and `tokenInitialized` flag.
- Modified `getToken()` to return the cached value after initial evaluation,
  using double-checked locking (`synchronized(this)`) to avoid race conditions.
- Updated `setToken()` and `setSelectedProfileId()` to correctly invalidate
  or update the cache.
- Added comprehensive unit tests in `AuthManagerTest.kt` to verify caching
  behavior and proper invalidation upon profile switches.
- Fixed GitGuardian warning by removing the "my_secret_token" from the test.

* fix: implement in-memory token caching to avoid redundant prefs decryptions

Resolves #277

Previously, the `AuthManager.getToken()` method decrypted the entire
`EncryptedSharedPreferences` file on every call. Because this method is
used in the OkHttp interceptor on every HTTP/WS request, and frequently
during navigation, it introduced 10-30ms of redundant work per call.
This compounded to noticeable UI lag (e.g., during chat session switches).

This commit implements thread-safe in-memory caching for the auth token
inside `AuthManager`.
- Added a `@Volatile` `cachedToken` and `tokenInitialized` flag.
- Modified `getToken()` to return the cached value after initial evaluation,
  using double-checked locking (`synchronized(this)`) to avoid race conditions.
- Updated `setToken()` and `setSelectedProfileId()` to correctly invalidate
  or update the cache.
- Added comprehensive unit tests in `AuthManagerTest.kt` to verify caching
  behavior and proper invalidation upon profile switches.
- Fixed GitGuardian warning by removing the "my_secret_token" from the test.
- Fixed merge conflicts and ensured code still tests well.

* fix: implement in-memory token caching to avoid redundant prefs decryptions

Resolves #277

Previously, the `AuthManager.getToken()` method decrypted the entire
`EncryptedSharedPreferences` file on every call. Because this method is
used in the OkHttp interceptor on every HTTP/WS request, and frequently
during navigation, it introduced 10-30ms of redundant work per call.
This compounded to noticeable UI lag (e.g., during chat session switches).

This commit implements thread-safe in-memory caching for the auth token
inside `AuthManager`.
- Added a `@Volatile` `cachedToken` and `tokenInitialized` flag.
- Modified `getToken()` to return the cached value after initial evaluation,
  using double-checked locking (`synchronized(this)`) to avoid race conditions.
- Updated `setToken()` and `setSelectedProfileId()` to correctly invalidate
  or update the cache.
- Added comprehensive unit tests in `AuthManagerTest.kt` to verify caching
  behavior and proper invalidation upon profile switches.
- Fixed GitGuardian warning by removing the "my_secret_token" from the test.

* fix: implement in-memory token caching to avoid redundant prefs decryptions

Resolves #277

Previously, the `AuthManager.getToken()` method decrypted the entire
`EncryptedSharedPreferences` file on every call. Because this method is
used in the OkHttp interceptor on every HTTP/WS request, and frequently
during navigation, it introduced 10-30ms of redundant work per call.
This compounded to noticeable UI lag (e.g., during chat session switches).

This commit implements thread-safe in-memory caching for the auth token
inside `AuthManager`.
- Added a `@Volatile` `cachedToken` and `tokenInitialized` flag.
- Modified `getToken()` to return the cached value after initial evaluation,
  using double-checked locking (`synchronized(this)`) to avoid race conditions.
- Updated `setToken()` and `setSelectedProfileId()` to correctly invalidate
  or update the cache.
- Added comprehensive unit tests in `AuthManagerTest.kt` to verify caching
  behavior and proper invalidation upon profile switches.
- Fixed GitGuardian warning by removing the "my_secret_token" from the test.

---------

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/ui/channels/ChannelsScreen.kt

@@ -69,16 +69,17 @@ fun ChannelsScreen(
         onOpenDrawer = onOpenDrawer,
         isRefreshing = state.isLoading,
         onRefresh = { viewModel.loadPlatforms() },
-    ) {
+    ) { paddingValues ->
         when {
             state.isLoading && state.platforms.isEmpty() -> {
-                LoadingState()
+                LoadingState(modifier = Modifier.padding(paddingValues))
             }
 
             state.errorMessage != null -> {
                 ErrorState(
                     message = state.errorMessage ?: "",
                     onRetry = { viewModel.loadPlatforms() },
+                    modifier = Modifier.padding(paddingValues),
                 )
             }
 
@@ -86,12 +87,13 @@ fun ChannelsScreen(
                 EmptyState(
                     title = stringResource(R.string.channels_empty_title),
                     subtitle = stringResource(R.string.channels_empty_desc),
+                    modifier = Modifier.padding(paddingValues),
                 )
             }
 
             else -> {
                 LazyColumn(
-                    modifier = Modifier.fillMaxSize(),
+                    modifier = Modifier.fillMaxSize().padding(paddingValues),
                     contentPadding = listContentPadding,
                     verticalArrangement = listItemSpacing,
                 ) {