Merge complete Dominican localization into 8.0

doc/index.rst

@@ -10,9 +10,23 @@ It includes:
 * Dominican tax groups and tax templates for ITBIS, ISR withholdings, ISC,
   CDT, legal tip, and other taxes;
 * tax code templates for DGII-oriented fiscal balances;
-* sale and purchase tax rules for common Dominican fiscal situations;
-* a ``tax_kind`` classification field on tax templates and taxes.
+* sale, purchase, reduced-rate, zero-rate, informal supplier, acquirer, and
+  withholding tax rules for common Dominican fiscal situations;
+* a broad ``tax_kind`` classification field on tax templates and taxes;
+* granular ``tax_fiscal_type`` and ``tax_application`` fields for fiscal
+  reporting, validation, and account mapping.
 
 The chart is intended as a base localization. Companies should review account
-names, inactive historical taxes, and sector-specific taxes before using it in
-production.
+names, sector-specific taxes, and DGII filing mappings before using it in
+production. The 16% and 8% ITBIS templates are kept as special-rate templates
+for cases where those rates apply.
+
+DGII account mapping
+--------------------
+
+In this localization, "DGII account mapping" means the link between accounting
+accounts and fiscal forms or fiscal boxes. For example, the ITBIS payable,
+ITBIS credit, ISR withholding, ITBIS withholding, ISC payable, CDT payable,
+asset tax, and transfer tax accounts are separated so reporting modules can map
+balances and movements to IT-1, IR-17, IR-2, ACT, ISC, and related DGII
+outputs without parsing account names.