Fix TokenStorage stale cache bug and add user-friendly error messages

- Fix TokenStorage.getToken() returning stale cached token after login/logout
- Add comprehensive ErrorMessageParser with 80+ error code mappings
- Add Suite9 and Suite10 UI test files for E2E integration testing
- Fix accessibility identifiers in RegisterView and ResidenceFormView
- Fix UITestHelpers logout to target alert button specifically
- Update various UI components with proper accessibility identifiers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

composeApp/src/commonMain/kotlin/com/example/casera/network/ApiConfig.kt

@@ -9,7 +9,7 @@ package com.example.casera.network
  */
 object ApiConfig {
     // ⚠️ CHANGE THIS TO TOGGLE ENVIRONMENT ⚠️
-    val CURRENT_ENV = Environment.DEV
+    val CURRENT_ENV = Environment.LOCAL
 
     enum class Environment {
         LOCAL,

composeApp/src/commonMain/kotlin/com/example/casera/storage/TokenStorage.kt

@@ -33,10 +33,9 @@ object TokenStorage {
 
     fun getToken(): String? {
         ensureInitialized()
-        // Return cached token if available, otherwise try to load from storage
-        if (cachedToken == null) {
-            cachedToken = tokenManager?.getToken()
-        }
+        // Always read from storage to avoid stale cache issues
+        // (DataManager.setAuthToken updates tokenManager directly, bypassing our cachedToken)
+        cachedToken = tokenManager?.getToken()
         return cachedToken
     }