Merge branch 'main' of https://github.com/0xPolygon/polygon-docs into cdk/migration

Author: kmurphypolygon

docs/cdk/architecture/staking-the-bridge.md

@@ -40,3 +40,4 @@ interface IAccount {
 - [ERC-4337 proposal](https://eips.ethereum.org/EIPS/eip-4337) is the link to the official proposal and technical specification.
 - [@account-abstraction SDK](https://www.npmjs.com/package/@account-abstraction/sdk) is an npm package for using ERC-4337 developed by the authors of the proposal.
 - [Stackup](https://docs.stackup.sh/) provides node services with ERC-4337 bundlers and other ERC-4337 infrastructure.
+- [WalletKit](https://walletkit.com) is an all-in-one platform for adding smart, gasless wallets to your app. It has integrated support for ERC-4337 and comes with a paymaster and bundler included, requiring no extra setup.

docs/img/cdk/stb-1.png

@@ -83,6 +83,7 @@ The following wallets are solutions that Polygon Technology has partnered with:
 | [Trust Wallet](https://trustwallet.com/)                                                             | non-custodial | EOA            | no        | support   | yes          |                | yes          | mobile                            |
 | [Unstoppable](https://unstoppable.money/)                                                            | non-custodial | EOA            | no        | yes       | yes          |                | no           | mobile, api/sdk                   |
 | [Venly](https://www.venly.io/)                                                                       | hybrid        | smart contract | no        | interface | no           |                |              | browser, api/sdk                  |
+| [WalletKit](https://walletkit.com)                                                                   | non-custodial | EOA, smart contract            | no        | yes       | yes          |        yes        | no           | browser, mobile, api/sdk                   |
 | [Wirex](https://wirexapp.com/en/wirex-wallet)*                                                       | non-custodial | EOA            | yes       | no        | no           |                |              | mobile                            |
 | [XDeFi](https://www.xdefi.io/)                                                                       | non-custodial | EOA            | no        | interface | no           | no             | no           | browser                           |
 | [Zerion](https://zerion.io/)                                                                         | non-custodial | EOA            | no        | yes       | yes          | yes            |              | mobile, browser                   |

docs/img/tools/wallet/walletkit/walletkit-overview.png

@@ -0,0 +1,44 @@
+!!! caution "Content disclaimer"
+    Please view the third-party content disclaimer [here](https://github.com/0xPolygon/polygon-docs/blob/main/CONTENT_DISCLAIMER.md).
+
+![WalletKit](/img/tools/wallet/walletkit/walletkit-overview.png)
+
+[WalletKit](https://walletkit.com) is an all-in-one platform for adding smart, gasless wallets to your app. WalletKit offers pre-built components for onboarding users with email and social logins, which can be integrated in under 15 minutes using their React SDK or the wagmi connector. Alternatively, build completely bespoke experiences for your users using WalletKit's Wallets API.
+
+WalletKit is compatible with most EVM chains, including Polygon. It has integrated support for ERC-4337 and comes with a paymaster and bundler included, requiring no extra setup.
+
+You can check out the [WalletKit documentation here](https://docs.walletkit.com). Start building for free on the Polygon testnet today.
+
+## Integration
+
+### Install the SDK
+
+```bash
+npm i @walletkit/react-link walletkit-js
+```
+or 
+```bash
+yarn add @walletkit/react-link walletkit-js
+```
+
+### Setup WalletKit
+
+Initialize `WalletKitLink` with your Project ID and wrap your app with `WalletKitProvider`, adding it as close to the
+root as possible.
+
+You can get your Project ID from the API Keys page in the [WalletKit dashboard](https://app.walletkit.com).
+
+```ts
+import { WalletKitLink, WalletKitLinkProvider } from "@walletkit/react-link";
+
+const wkLink = new WalletKitLink({
+  projectId: "<WalletKit-Project-ID>",
+});
+
+export function App() {
+  return <WalletKitLinkProvider link={wkLink}>...</WalletKitLinkProvider>;
+}
+```
+
+> ☝️ If you'd like to integrate WalletKit with wagmi, check out
+the [installation docs here](https://docs.walletkit.com/link/installation).

docs/pos/concepts/transactions/eip-4337.md

@@ -91,7 +91,6 @@ nav:
       - Architecture:
         - CDK rollup: cdk/architecture/cdk-zkevm.md
         - CDK validium: cdk/architecture/cdk-validium.md
-        - Unified bridge - STB: cdk/architecture/staking-the-bridge.md
       - Specification:
         - Validium vs rollup: cdk/spec/validium-vs-rollup.md
       - Glossary:
@@ -495,6 +494,7 @@ nav:
           - Portis:  tools/wallets/portis.md    
           - SlashAuth:  tools/wallets/slashauth.md
           - Torus:  tools/wallets/torus.md  
+          - WalletKit:  tools/wallets/walletkit.md
           - Wallet link: tools/wallets/wallet-link.md
           - WalletConnect:  tools/wallets/walletconnect.md
           - Web3Modal: tools/wallets/using-web3modal.md