🐛 Issue: Crash when activating external .db if confirmed too quickly

When importing an external .db file and clicking “Yes, Activate” immediately in the Set External Database as Active window, the app throws an error and the import crashes.

Reproduction

1. Open Import External Database.
2. Select a .db file.
3. As soon as the Set External Database as Active dialog appears, click “Yes, Activate” quickly, before the Android biometric key prompts appear.
4. Crash occurs.

Cause (suspected)

Activation is triggered before biometric key initialization finishes.

Proposed Fix

Add short delay or await biometric key readiness before allowing activation.