- Standardize SecretsView action icon sizing and color so header, row, loading, and modal toggle icons stay visible in dark and light themes
- Expand SecretsView tests to load app CSS and assert icon visibility across both themes
- Stabilize the process supervisor fallback test by removing an unnecessary maxLifetime override
Fusion-Task-Id: FN-5257
Restores toggle icon styling in `SecretsView.css` and adds test coverage for the eye-toggle reveal/hide behavior in `SecretsView`, completing the FN-5161 test suite for the secrets view.
Fusion-Task-Id: FN-5161
