Upgrade quant-client to v4.12.0, fix env logs, and extend tests

[stooit]

Summary

• Upgrade @quantcdn/quant-client from 4.3.0 to 4.12.0 (no breaking changes for current CLI usage; crawlersList void return type reported upstream)
• Fix qc env logs — was returning no data because the API response uses logEvents key, not logs
• Simplify API client — remove redundant manual headers, rely on Configuration.accessToken
• Consistent machine_name usage — project and crawler selection now always uses machine_name for API calls instead of falling back to display name
• Autocomplete prompts — crawler command now uses searchable autocomplete for project/crawler selection
• Cleaner CLI banner — replace gradient figlet banner with minimal ASCII art in cyan
• Expanded test suite — API client tests from 14 to 52, covering all methods with mocked SDK calls (happy paths, parameter overrides, error handling for 401/403/404)

Test plan

• All 86 unit tests pass
• Build succeeds with no type errors
• qc env logs returns log data
• Banner displays correctly
• Manual test of qc crawler run autocomplete prompts
• Manual test of qc project select with machine_name