feat(dpp): add documents_countable to DocumentTypeV2 for O(1) total document counts

packages/rs-dpp/schema/meta_schemas/document/v0/document-meta.json

@@ -1,6 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "https://github.com/dashpay/platform/blob/master/packages/rs-dpp/schema/meta_schemas/document/v0/document-meta.json",
+  "$comment": "FROZEN — DO NOT MODIFY. This v0 document meta-schema is the schema validator used to admit pre-v12 contracts and remains in view-only mode for state already on disk. Any new top-level property or rule MUST go in a newer meta-schema version (v1+) so historical validation results stay deterministic. Touching this file changes how every pre-v12 contract was admitted and breaks consensus replay.",
   "type": "object",
   "$defs": {
     "documentProperties": {

packages/rs-dpp/schema/meta_schemas/document/v1/document-meta.json

@@ -1,6 +1,7 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "https://github.com/dashpay/platform/blob/master/packages/rs-dpp/schema/meta_schemas/document/v1/document-meta.json",
+  "$comment": "EDITABLE UNTIL 3.1 RELEASE — FROZEN AFTER. This v1 document meta-schema activates with protocol v12 (CONTRACT_VERSIONS_V4) and admits every v12+ contract written to disk. Once Platform 3.1 ships, mutating it would change historical validation results and break consensus replay. After release, any new top-level property or rule MUST go in a newer meta-schema version (v2+).",
   "type": "object",
   "$defs": {
     "documentProperties": {
@@ -505,6 +506,14 @@
       ],
       "description": "Key requirements. 0 - Unique Non Replaceable, 1 - Multiple, 2 - Multiple with reference to latest key."
     },
+    "documentsCountable": {
+      "type": "boolean",
+      "description": "When true, the primary key tree uses a CountTree enabling O(1) total document count queries. Only effective from protocol version 12."
+    },
+    "rangeCountable": {
+      "type": "boolean",
+      "description": "When true, the primary key tree uses a ProvableCountTree enabling range countable. Only effective from protocol version 12. Implies documentsCountable."
+    },
     "tokenCost": {
       "type": "object",
       "properties": {