Compliance Deadline: created by job_server after filing completion,
tracks annual filing deadlines (RMD, CPNI, 499-A, BDC).
Compliance Calendar: used by renewal_worker for billing cycle,
tracks due dates, invoices, and recurring renewal entries.
Both were referenced in code but never created — caused 417 errors.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>