[PM-28139] Remove V1 Linux Biometrics

[quexten]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-28139

📔 Objective

Removes the V1 linux biometric implementation since it has been rolled out, and since it contains a non-fips-approved cryptographic algorithm suite transitively via thread rng.

📸 Screenshots

[quexten]

^ not fips approved algorithm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.59%. Comparing base (81757da) to head (c0c4125).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #21571      +/-   ##
==========================================
+ Coverage   49.57%   49.59%   +0.02%     
==========================================
  Files        4108     4102       -6     
  Lines      129059   128652     -407     
  Branches    19721    19702      -19     
==========================================
- Hits        63977    63810     -167     
+ Misses      60353    60114     -239     
+ Partials     4729     4728       -1     

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[github-actions]

🤖 Bitwarden Claude Code Review

Overall Assessment: APPROVE

Reviewed the removal of the V1 Linux biometrics implementation, including the Rust biometric/crypto core modules, napi bindings, the LinuxBiometricsV2 feature flag, IPC actions, and the associated service wiring. The V2 LinuxBiometricsSystem is now instantiated directly in MainBiometricsService in place of the feature-flagged runtime swap. Verified that no dangling references to any removed symbols remain and that constructor signature changes are applied consistently across all call sites and specs.

Code Review Details

No findings. Verification notes:

• LinuxBiometricsSystem is correctly imported and used directly in apps/desktop/src/key-management/biometrics/main-biometrics.service.ts; no leftover dynamic require.
• No remaining references to removed symbols (LinuxBiometricsV2, enableLinuxV2Biometrics, isLinuxV2BiometricsEnabled, EnableLinuxV2/IsLinuxV2Enabled, the deleted napi biometrics namespace, or the V1 core modules).
• The deleted core crypto module is distinct from the retained secure_memory::secure_key::crypto submodule and the biometric_v2 module — no cross-references break.
• Constructor signature reductions on MainBiometricsService and BiometricMessageHandlerService are applied consistently at call sites (main.ts) and updated specs.
• The existing unresolved thread on the deleted unix.rs line ("not fips approved algorithm") is an author annotation on the code being removed, consistent with the PR objective.

[sonarqubecloud]

Quality Gate passed

Issues
0 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

[dereknance]

Ah deleted code. My favorite!

[eligrubb]

🔥🔥🔥