feat: add ChainFamily types and extend wallet identity model per en-o8w

New types:
- ChainFamily enum (evm, solana, sui, bitcoin, cosmos, aptos)
- Caip2ChainId string type for WalletConnect v2 interop

Extended types:
- WalletConnection: supportedChainFamilies field
- ConnectedAccount: chainFamily field
- WatchAddress: chainFamily field
- TrackedAddress: chainFamily field for integration routing
- AddressRequest: chainFamily field for routing
- AccountId: format extended to {connectionId}:{chainFamily}:{address}
- IntegrationSource: added SUI, BITCOIN, COSMOS, APTOS members

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: linuxninja39

package.json

@@ -21,6 +21,11 @@
       "import": "./dist/enums/Chain.js",
       "require": "./dist/cjs/enums/Chain.js"
     },
+    "./enums/ChainFamily": {
+      "types": "./dist/enums/ChainFamily.d.ts",
+      "import": "./dist/enums/ChainFamily.js",
+      "require": "./dist/cjs/enums/ChainFamily.js"
+    },
     "./enums/IntegrationSource": {
       "types": "./dist/enums/IntegrationSource.d.ts",
       "import": "./dist/enums/IntegrationSource.js",

src/enums/ChainFamily.ts

@@ -0,0 +1,55 @@
+/**
+ * Classification of blockchain protocol families.
+ *
+ * Groups blockchain networks by their underlying protocol family rather than
+ * individual chain identity. Used for routing (which integration handles which
+ * addresses), discovery (which standard detects which providers), and display
+ * (chain family badges in UI).
+ *
+ * `ChainFamily` is distinct from `Chain` — a chain family contains multiple
+ * chains (e.g., EVM family includes Ethereum, Polygon, Arbitrum, etc.).
+ *
+ * This is a closed enum. Adding new families requires Enterprise Architecture
+ * approval, a new integration bounded context, and correlation registry entries.
+ *
+ * @example
+ * ```typescript
+ * import { ChainFamily } from '@cygnus-wealth/data-models';
+ *
+ * // Route address to correct integration
+ * function getIntegration(family: ChainFamily) {
+ *   switch (family) {
+ *     case ChainFamily.EVM:
+ *       return evmIntegration;
+ *     case ChainFamily.SOLANA:
+ *       return solIntegration;
+ *     default:
+ *       throw new Error(`No integration for ${family}`);
+ *   }
+ * }
+ * ```
+ *
+ * @since 1.5.0
+ * @stability extended
+ *
+ * @see {@link Chain} for specific chain identification within a family
+ */
+export enum ChainFamily {
+  /** EVM-compatible chains (Ethereum, Polygon, Arbitrum, Optimism, Avalanche, BSC, Base) */
+  EVM = 'evm',
+
+  /** Solana mainnet */
+  SOLANA = 'solana',
+
+  /** SUI mainnet (Move-based L1) */
+  SUI = 'sui',
+
+  /** Bitcoin mainnet (UTXO model) */
+  BITCOIN = 'bitcoin',
+
+  /** Cosmos ecosystem chains (Cosmos Hub, Osmosis, etc.) */
+  COSMOS = 'cosmos',
+
+  /** Aptos mainnet (Move-based L1) */
+  APTOS = 'aptos',
+}

src/enums/IntegrationSource.ts

@@ -76,6 +76,18 @@ export enum IntegrationSource {
   /** Data fetched directly from blockchain via RPC */
   BLOCKCHAIN_DIRECT = 'BLOCKCHAIN_DIRECT',
 
+  /** SUI blockchain integration */
+  SUI = 'SUI',
+
+  /** Bitcoin blockchain integration */
+  BITCOIN = 'BITCOIN',
+
+  /** Cosmos ecosystem integration */
+  COSMOS = 'COSMOS',
+
+  /** Aptos blockchain integration */
+  APTOS = 'APTOS',
+
   /** Other or unclassified data source */
   OTHER = 'OTHER'
 }

src/index.ts

@@ -1,6 +1,7 @@
 // Enums
 export { AssetType } from './enums/AssetType';
 export { Chain } from './enums/Chain';
+export { ChainFamily } from './enums/ChainFamily';
 export { IntegrationSource } from './enums/IntegrationSource';
 export { TransactionType } from './enums/TransactionType';
 export { AccountType } from './enums/AccountType';
@@ -38,6 +39,7 @@ export { PortfolioAsset } from './interfaces/PortfolioAsset';
 export type { WalletProviderId } from './types/WalletProviderId';
 export type { WalletConnectionId } from './types/WalletConnectionId';
 export type { AccountId } from './types/AccountId';
+export type { Caip2ChainId } from './types/Caip2ChainId';
 
 // Multi-Wallet Connection Models
 export type { WalletConnection } from './interfaces/WalletConnection';

src/interfaces/AddressRequest.ts

@@ -1,5 +1,6 @@
 import { AccountId } from '../types/AccountId';
 import { Chain } from '../enums/Chain';
+import { ChainFamily } from '../enums/ChainFamily';
 
 /**
  * Request to query data for a specific account address.
@@ -31,6 +32,9 @@ export interface AddressRequest {
   /** Checksummed address to query */
   address: string;
 
+  /** Chain family for routing to the correct integration */
+  chainFamily: ChainFamily;
+
   /** Chains to query for this address */
   chainScope: Chain[];
 }

src/interfaces/ConnectedAccount.ts

@@ -1,5 +1,6 @@
 import { AccountId } from '../types/AccountId';
 import { Chain } from '../enums/Chain';
+import { ChainFamily } from '../enums/ChainFamily';
 
 /**
  * A single account within a wallet connection.
@@ -40,6 +41,9 @@ export interface ConnectedAccount {
   /** User-assigned label (default: truncated address) */
   accountLabel: string;
 
+  /** Chain family this account belongs to */
+  chainFamily: ChainFamily;
+
   /** Chains to track this account on (default: all supported by the connection) */
   chainScope: Chain[];
 

src/interfaces/TrackedAddress.ts

@@ -2,6 +2,7 @@ import { AccountId } from '../types/AccountId';
 import { WalletConnectionId } from '../types/WalletConnectionId';
 import { WalletProviderId } from '../types/WalletProviderId';
 import { Chain } from '../enums/Chain';
+import { ChainFamily } from '../enums/ChainFamily';
 
 /**
  * An address being tracked for portfolio purposes with full account context.
@@ -49,6 +50,9 @@ export interface TrackedAddress {
   /** Label of the parent wallet connection */
   connectionLabel: string;
 
+  /** Chain family of this tracked address, used for integration routing */
+  chainFamily: ChainFamily;
+
   /** Chains to query for this address */
   chainScope: Chain[];
 }

src/interfaces/WalletConnection.ts

@@ -1,6 +1,7 @@
 import { WalletConnectionId } from '../types/WalletConnectionId';
 import { WalletProviderId } from '../types/WalletProviderId';
 import { Chain } from '../enums/Chain';
+import { ChainFamily } from '../enums/ChainFamily';
 import { ConnectedAccount } from './ConnectedAccount';
 
 /**
@@ -64,6 +65,9 @@ export interface WalletConnection {
   /** Chains this wallet connection supports */
   supportedChains: Chain[];
 
+  /** Chain families this wallet connection supports (e.g., EVM, Solana, SUI) */
+  supportedChainFamilies: ChainFamily[];
+
   /** ISO 8601 timestamp of initial connection */
   connectedAt: string;
 

src/interfaces/WatchAddress.ts

@@ -1,5 +1,6 @@
 import { AccountId } from '../types/AccountId';
 import { Chain } from '../enums/Chain';
+import { ChainFamily } from '../enums/ChainFamily';
 
 /**
  * An address tracked independently of any wallet connection.
@@ -36,6 +37,9 @@ export interface WatchAddress {
   /** User-assigned label */
   addressLabel: string;
 
+  /** Chain family of this watched address */
+  chainFamily: ChainFamily;
+
   /** Chains to track this address on */
   chainScope: Chain[];
 

src/types/AccountId.ts

@@ -1,10 +1,13 @@
 /**
  * Unique identifier for a specific account across the system.
  *
- * Format: `{walletConnectionId}:{checksummedAddress}` for connected accounts
- * (e.g., `metamask:a1b2c3d4:0xAbC...123`), or `watch:{checksummedAddress}`
+ * Format: `{walletConnectionId}:{chainFamily}:{address}` for connected accounts
+ * (e.g., `metamask:a1b2c3d4:evm:0xAbC...123`), or `watch:{address}`
  * for watch addresses.
  *
+ * The `chainFamily` segment (introduced in en-o8w) disambiguates addresses
+ * from the same wallet connection that span different chain families.
+ *
  * This is the primary key used throughout the system to reference a specific
  * account. It disambiguates the same address appearing in different wallet
  * connections (e.g., imported into both MetaMask and Rabby).
@@ -13,7 +16,8 @@
  * ```typescript
  * import { AccountId } from '@cygnus-wealth/data-models';
  *
- * const connectedAccountId: AccountId = 'metamask:a1b2c3d4:0xAbCdEf1234567890';
+ * const evmAccountId: AccountId = 'metamask:a1b2c3d4:evm:0xAbCdEf1234567890';
+ * const solanaAccountId: AccountId = 'phantom:abc123:solana:7xKXtg2CW87d97TXJSDpbD5jBkheTqA83TZRuJosgAsU';
  * const watchAccountId: AccountId = 'watch:0xAbCdEf1234567890';
  * ```
  *