[PM-32069] Add ExtendedProviderAbilityCacheService

[JimmyVo16]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-32069
https://bitwarden.atlassian.net/browse/PM-32112

📔 Objective

1. Add extended cache for the provider service (IProviderAbilityCacheService).
2. Inject IProviderAbilityCacheService into FeatureRoutedCacheService behind a feature flag.
3. Add unit tests.

📸 Screenshots

This code isn't wired up yet, so we can't manually test it, but I feel like the automated test coverage is sufficient.

[github-actions]

Checkmarx One – Scan Summary & Details – 7914cba4-4066-4bdb-9fe6-88ec9835012e

Great job! No new security vulnerabilities introduced in this pull request

[github-actions]

Bitwarden Claude Code Review

Overall Assessment: APPROVE

This PR introduces ExtendedProviderAbilityCacheService backed by FusionCache, defines the IProviderAbilityCacheService interface, and routes single-provider ability cache operations through the ProviderAbilityExtendedCache feature flag in FeatureRoutedCacheService. DI registrations are correctly placed in both ServiceCollectionExtensions (for services using AddDefaultServices) and Events/Startup.cs (which has standalone registration). Tests thoroughly cover all feature-flag-on and feature-flag-off code paths for get, upsert, and delete operations.

No issues found.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.68%. Comparing base (f2141b9) to head (43bfc80).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7447      +/-   ##
==========================================
+ Coverage   58.66%   58.68%   +0.01%     
==========================================
  Files        2066     2067       +1     
  Lines       91089    91124      +35     
  Branches     8106     8109       +3     
==========================================
+ Hits        53440    53475      +35     
  Misses      35740    35740              
  Partials     1909     1909              

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[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[JimmyVo16]

I looked at the failed Build Docker images (SeederApi, ./util, linux/amd64, linux/arm64, true) job. It looks like a permission issue when logging into Azure. I don't think this is related to my change.