- Remove unused datetime imports from openbb_service, market_service,
quantitative_service (now using obb_utils.days_ago)
- Remove unused variable 'maintains' in routes_sentiment
- Remove unused imports in test files
- Fix forward reference annotation in test helper
- Move FRED credential registration to FastAPI lifespan (was fragile
import-order-dependent side-effect)
- Add noqa E402 annotations for imports after curl_cffi patch
- Fix all return type hints: bare dict -> dict[str, Any]
- Move yfinance import to module level (was inline in functions)
- Fix datetime.now() -> datetime.now(tz=timezone.utc) in openbb_service
- Add try/except error handling to Group B service functions
- Fix dict mutation in relative_rotation (immutable pattern)
- Extract _classify_rrg_quadrant helper function
- Fix type builtin shadow in routes_economy (type -> gdp_type)
- Fix falsy int guard (if year: -> if year is not None:)
- Remove user input echo from error messages
- Pin curl_cffi==0.7.4 to avoid BoringSSL bug in 0.12-0.14
- Patch curl_cffi Session to use safari TLS fingerprint instead of
chrome, which triggers SSL_ERROR_SYSCALL on some networks
- Register FRED API key with OpenBB credentials at startup
- Fix macro overview to return latest data instead of oldest, and
extract values by FRED series ID key
- Replace Finnhub upgrades endpoint (premium-only) with yfinance
upgrades_downgrades which includes price target changes
- Remove redundant curl_cffi upgrade from Dockerfile
