feat(ethers5): add Trezor connector for EVM chains

    Register a Trezor connector in the ethers5 adapter's syncConnectors,
    mirroring how the Bitcoin adapter offers its own, so "Trezor" appears
    in the eip155 Connect view without any host-app wiring.

    The connector is an EIP-1193 provider backed by @trezor/connect-web:
    accounts come from the device on the standard Ethereum path
    (m/44'/60'/0'/0/0, single account), transactions are signed on the
    device and broadcast as legacy gas-price transactions through the
    active network's RPC endpoint (Rootstock has no EIP-1559), and
    read-only JSON-RPC calls are forwarded to that same endpoint. Chain
    switching validates against the adapter's configured networks.

Author: ronaldsg20

packages/adapters/bitcoin/src/connectors/TrezorConnector/index.ts

@@ -591,15 +591,27 @@ export class TrezorConnector extends ProviderEventEmitter implements BitcoinConn
       return
     }
 
-    await getTrezorConnect().init({
-      manifest: {
-        email: 'support@reown.com',
-        appUrl: typeof window === 'undefined' ? 'https://reown.com' : window.location.origin,
-        appName: 'Reown AppKit'
-      },
-      lazyLoad: true,
-      popup: true
-    })
+    try {
+      await getTrezorConnect().init({
+        manifest: {
+          email: 'support@reown.com',
+          appUrl: typeof window === 'undefined' ? 'https://reown.com' : window.location.origin,
+          appName: 'Reown AppKit'
+        },
+        lazyLoad: true,
+        popup: true
+      })
+    } catch (error) {
+      /*
+       * Trezor Connect is a page-global singleton: the host app (or another
+       * connector) may have initialized it first, which init() reports as an
+       * error even though the instance is fully usable.
+       */
+      const message = error instanceof Error ? error.message : String(error)
+      if (!message.toLowerCase().includes('already initialized')) {
+        throw error
+      }
+    }
 
     this.initialized = true
 

packages/adapters/ethers5/package.json

@@ -26,6 +26,7 @@
     "@reown/appkit-scaffold-ui": "workspace:*",
     "@reown/appkit-utils": "workspace:*",
     "@reown/appkit-wallet": "workspace:*",
+    "@trezor/connect-web": "9.7.3",
     "@walletconnect/universal-provider": "2.23.7",
     "valtio": "2.1.7"
   },

packages/adapters/ethers5/src/client.ts

@@ -15,6 +15,7 @@ import { ConstantsUtil, PresetsUtil } from '@reown/appkit-common'
 import {
   AdapterBlueprint,
   AssetController,
+  type ChainAdapterConnector,
   ChainController,
   type CombinedProvider,
   type Connector,
@@ -42,6 +43,7 @@ import {
 } from '@reown/appkit-utils/ethers'
 import type { W3mFrameProvider } from '@reown/appkit-wallet'
 
+import { TrezorConnector } from './connectors/TrezorConnector/index.js'
 import { Ethers5Methods } from './utils/Ethers5Methods.js'
 
 export interface EIP6963ProviderDetail {
@@ -273,6 +275,15 @@ export class Ethers5Adapter extends AdapterBlueprint {
         })
       }
     })
+
+    const trezorConnector = TrezorConnector.getWallet({
+      requestedChains: this.getCaipNetworks(),
+      requestedCaipNetworkId: ChainController.getActiveCaipNetwork(CommonConstantsUtil.CHAIN.EVM)
+        ?.caipNetworkId
+    })
+    if (trezorConnector) {
+      this.addConnector(trezorConnector as unknown as ChainAdapterConnector)
+    }
   }
 
   private async disconnectAll() {