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refactor: Move mint tests to fake_wallet.rs and add descriptive comments
refactor: pure wallet/mint does not need arc
refactor: Consolidate NUT-06 test into single function and remove redundant module
docs: Add comments explaining test purposes in integration tests file
refactor: Remove anyhow and replace with expect for error handling
refactor: use expect in pure tests
feat: Add configurable database type via environment variable for test mint and wallet
refactor: Update database initialization in test mint and wallet creation
feat: Add temporary directory support for redb and sqlite databases in tests
feat: Add database type argument to test commands in justfile
ci: Add build matrix for pure-itest with memory, sqlite, and redb databases
refactor: use expect in pure tests
refactor: Move and refactor `test_swap_unbalanced` from mint to integration tests pure
refactor: move mint tests to pure tests
docs: Add detailed comments explaining test file purposes for mint and integration tests
refactor: Extract keyset ID retrieval into a reusable function
test: Add concurrent double-spend test with 3 swap transactions
refactor: Simplify concurrent swap request processing and error handling
test: Add check to verify all proofs are marked as spent in concurrent double-spend test
refactor: Optimize proof state retrieval in concurrent double-spend test
feat: Add test for concurrent melt race condition with same proofs
fix: Update concurrent melt test to use melt quote and handle errors
refactor: melt concurrrent
refactor: Rename test function for clarity in concurrent double-spend scenario
refactor: Modify test_concurrent_double_spend_melt to manually create melt requests in mint tasks
feat: con melt test
refactor: Optimize proof state handling and error recovery in check_spendable
refactor: Extract helper method to reset proofs to original state
fix: reset y states
fix: reset y states
* fix: acces of priv feilds
* fix: add extra migrate
