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.
- Add crabrl-fork to workspace Cargo.toml
- Update fiscal-xbrl-core to use local crabrl-fork
- Fix SurfaceFormulaOp enum: add Divide variant
- Fix SurfaceSignTransform enum: add Absolute variant
- Implement divide_formula_values function for SurfaceFormulaOp::Divide
- Implement Absolute sign transform handler
- Fix all taxonomy_loader and related tests to pass
