ded4414b32
Code review fixes (commit 611a269):
- resolve_conid validates conid key presence (was raw KeyError on malformed)
- _SEC_TYPE_MAP module constant — reused in get_ticker + get_bars
(also fixes get_bars previously missing "forex": "CASH")
- New tests: empty response + malformed response error paths
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>