<UserStory> 1952: Service Refactoring </UserStory>
UserStory #1952
<Changes>
1. Enhanced DataStore::getUsers to load SerializedUser records, refresh cache,
and attach notifications to recipient users with validation for recipient IDs.
2. Updated DataStore::saveUsers to persist SerializedUser records and save
notifications alongside user data.
3. Refactored AuthenticationManagementService::login to use DataStoreLockGuard
and tracked user map with SerializedUser-backed records.
4. Modified AuthenticationManagementService::changePassword to ensure thread-safe
updates, mark user record as MODIFIED, and persist changes via DataStore::saveUsers.
5. Added dependencies for Utility.h and DataStoreLockGuard.h in
AuthenticationManagementService.cpp to support safe record handling.
</Changes>
<Test>
N/A
</Test>
<Review>
Sreeja Reghukumar
</Review>
Avinash Rajesh
74dbbd9e82