[TASK] Create bank account setup helpers - Prerequisites and Test Data Setup

[africanitem]

Task Details

Epic: #491 [EPIC] Prerequisites and Test Data Setup Workflow E2E Tests

Dependencies

• Depends on: [TASK] Create test user setup helpers - Prerequisites and Test Data Setup #493

Success Criteria

• Helper functions in e2e/helpers/bank-account-helpers.ts
• createTestBankAccount() function using pattern: Test Bank Account ${Date.now()}
• createPettyCashAccount() function for petty cash setup
• At minimum, creates petty cash account for payment workflows
• Functions create accounts with proper chart of accounts linkage