feat(tron-wallet-snap): implement feature-flagged AssetsController

packages/tron-wallet-snap/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add feature-flagged AssetsController migration for fungible asset reads (TRX, TRC10, TRC20). Protocol assets (energy, bandwidth, staking, lock/withdrawal, rewards) remain Snap-owned. Resolution order: remote feature flags → `TRON_ASSETS_MIGRATION_STAGE` env (non-production only) → Off default.
+
 ## [2.0.0]
 
 ### Changed

packages/tron-wallet-snap/package.json

@@ -48,10 +48,13 @@
     "test:watch": "NODE_OPTIONS=--experimental-vm-modules jest --watch"
   },
   "devDependencies": {
+    "@metamask/assets-controller": "11.2.0",
     "@metamask/auto-changelog": "^6.1.1",
     "@metamask/key-tree": "^10.1.1",
     "@metamask/keyring-api": "^23.7.0",
     "@metamask/keyring-snap-sdk": "^9.2.1",
+    "@metamask/messenger": "^2.0.0",
+    "@metamask/remote-feature-flag-controller": "4.2.2",
     "@metamask/snaps-cli": "^8.4.1",
     "@metamask/snaps-jest": "^10.2.0",
     "@metamask/snaps-sdk": "^11.2.0",

packages/tron-wallet-snap/snap.manifest.json

@@ -7,7 +7,7 @@
     "url": "https://github.com/MetaMask/internal-snaps.git"
   },
   "source": {
-    "shasum": "0TZh63x04Gncx8UgHBoWnQ4RmX6kmTL6RmJTyqgJ7G8=",
+    "shasum": "AKoQWoE0egZjeSKDZ5PHQcfN4sXinCBhhYmgTo/xfOA=",
     "location": {
       "npm": {
         "filePath": "dist/bundle.js",
@@ -48,6 +48,13 @@
     },
     "endowment:assets": {
       "scopes": ["tron:728126428"]
+    },
+    "endowment:messenger": {
+      "actions": [
+        "AssetsController:getAsset",
+        "AssetsController:getAssets",
+        "RemoteFeatureFlagController:getState"
+      ]
     }
   },
   "platformVersion": "11.2.0",

packages/tron-wallet-snap/src/context.ts

@@ -1,3 +1,5 @@
+import { getMessenger } from '@metamask/snaps-sdk';
+
 import { InMemoryCache } from './caching/InMemoryCache';
 import { StateCache } from './caching/StateCache';
 import { PriceApiClient } from './clients/price-api/PriceApiClient';
@@ -29,6 +31,7 @@ import { TransactionScanService } from './services/transaction-scan/TransactionS
 import { TransactionsRepository } from './services/transactions/TransactionsRepository';
 import { TransactionsService } from './services/transactions/TransactionsService';
 import { WalletService } from './services/wallet/WalletService';
+import type { CoreMessenger } from './types/core-messenger';
 import logger, { noOpLogger } from './utils/logger';
 
 /**
@@ -82,6 +85,8 @@ const priceApiClient = new PriceApiClient(configProvider, priceCache);
 // Token API client
 const tokenApiClient = new TokenApiClient(configProvider);
 
+const coreMessenger = getMessenger<CoreMessenger>();
+
 // Security Alerts API client
 const securityAlertsApiClient = new SecurityAlertsApiClient(
   configProvider,
@@ -98,6 +103,7 @@ const assetsService = new AssetsService({
   priceApiClient,
   tokenApiClient,
   snapClient,
+  coreMessenger,
 });
 
 const transactionsService = new TransactionsService({