Create unified disclosure statement to organize footnote disclosures
separate from primary financial statements. Disclosures are now grouped
by type (tax, debt, securities, derivatives, leases, intangibles, ma,
revenue, cash_flow) in a dedicated statement type for cleaner UI
presentation.
- Wrap snapshot updates in transactions with error context for each child table
- Add sidecar retry with exponential backoff (3 attempts, 2s base, 10s max, 30% jitter)
- Add HTTP timeout (30s per request) and SEC rate limiting (10 req/s) in Rust
- Add XBRL validation with status reporting (checks root element, tag balance)
