[a1denvalu3]

Fix a security issue in wallet restoration. Closes #410.

Validation: 53 focused wallet, restore, onboarding, mnemonic, and recovery-backup tests passed; ./gradlew assembleDebug passed with JDK 25.

[codecov]

Codecov Report

❌ Patch coverage is 68.96552% with 54 lines in your changes missing coverage. Please review.
✅ Project coverage is 37.61%. Comparing base (d123f11) to head (06c15f9).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ectricdreams/numo/core/cashu/CashuWalletManager.kt	74.11%	10 Missing and 12 partials ⚠️
...eams/numo/feature/onboarding/OnboardingActivity.kt	33.33%	10 Missing ⚠️
...s/numo/feature/onboarding/OnboardingMintAdapter.kt	71.42%	5 Missing and 1 partial ⚠️
...ams/numo/feature/settings/RestoreWalletActivity.kt	57.14%	6 Missing ⚠️
.../electricdreams/numo/core/prefs/PreferenceStore.kt	50.00%	4 Missing and 1 partial ⚠️
...a/com/electricdreams/numo/core/util/MintManager.kt	76.19%	1 Missing and 4 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #414      +/-   ##
============================================
+ Coverage     36.29%   37.61%   +1.31%     
- Complexity     2142     2222      +80     
============================================
  Files           241      241              
  Lines         26312    26432     +120     
  Branches       3741     3753      +12     
============================================
+ Hits           9551     9943     +392     
+ Misses        15525    15204     -321     
- Partials       1236     1285      +49     

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