Added focused unit tests for `getActiveKey` in `js/nostr/utils.js` to improve test coverage.
This module was identified as having 0% coverage.
The new tests cover all branches:
- ROOT key generation
- pubkey:d key generation
- LEGACY key fallback
- Handling of missing/empty tags
Artifacts:
- tests/nostr/utils.test.mjs
- docs/agents/task-logs/weekly/2026-02-25_test-coverage-agent_completed.md
Co-authored-by: PR0M3TH3AN <[email protected]>