fix: bump default fee model from 1 to 100 sat/KB to match ARC endpoint requirements

[Copilot]

Both ARC endpoints shipped with the library (arc.taal.com, arc.gorillapool.io) enforce a minimum of 100 sat/KB, but StorageProvider.defaultOptions() was returning { model: 'sat/kb', value: 1 }. Wallets created with defaults would broadcast transactions that silently go unmined.

Changes

• StorageProvider.defaultOptions() — default feeModel.value: 1 → 100
• validateStorageFeeModel() — fallback value when no fee model is provided: 1 → 100
• Setup.createStorageKnex(), SetupClient.createStorageIdb(), MonitorDaemon.createSetup() — hardcoded inline fee model values updated to match

// Before
feeModel: { model: 'sat/kb', value: 1 }

// After
feeModel: { model: 'sat/kb', value: 100 }

Test utilities that explicitly set value: 1 for controlled fee-calculation unit tests are intentionally unchanged.

[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

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