Sunset Koi testnet (#117)

* Remove Pangolin and Koi chain documentation; update Crab chain description as primary test network

* Update documentation to replace Koi references with Crab testnet across multiple files

* Update documentation to replace Koi references with Crab testnet in transfer tutorial and related files

* Fix formatting issue in transfer token guide by correcting image tag

Author: boundless-forest

docs/build/ethereum-tools/interact-with-ethersjs.md

@@ -42,7 +42,7 @@ npm install [email protected]
 ## Contract Interaction
 
 !!! note
-    The network provider used in this tutorial is the [Koi testnet](../getting-started/networks/koi.md). However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
+    The network provider used in this tutorial is the [Crab testnet](../getting-started/networks/crab.md). However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
 
 ### Prepare Contract
 
@@ -156,7 +156,7 @@ const accountFrom = {
     privateKey: "0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc",
 }
 
-const provider = new JsonRpcProvider('https://koi-rpc.darwinia.network');
+const provider = new JsonRpcProvider('https://crab-rpc.darwinia.network');
 const wallet = new ethers.Wallet(accountFrom.privateKey, provider);
 const abi = contractMetadata.contracts["storage.sol:Storage"].abi;
 const bin = contractMetadata.contracts["storage.sol:Storage"].bin;
@@ -216,7 +216,7 @@ const accountFrom = {
   privateKey:
     "0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc",
 };
-const provider = new JsonRpcProvider("https://koi-rpc.darwinia.network");
+const provider = new JsonRpcProvider("https://crab-rpc.darwinia.network");
 const wallet = new ethers.Wallet(accountFrom.privateKey, provider);
 const abi = contractMetadata.contracts["storage.sol:Storage"].abi;
 
@@ -265,7 +265,7 @@ const contractMetadata = require("./metadata.json");
 // The contract address deployed in last step
 const contractAddress = '0x24e263941c13bD12EEaAdba64531385e83103908';
 
-const provider = new JsonRpcProvider('https://koi-rpc.darwinia.network');
+const provider = new JsonRpcProvider('https://crab-rpc.darwinia.network');
 const abi = contractMetadata.contracts["storage.sol:Storage"].abi;
 const retrieve = async () => {
     // Construct the contract instance

docs/build/ethereum-tools/interact-with-foundry.md

@@ -12,7 +12,7 @@ The four main tools in Foundry are:
 - [Anvil](https://github.com/foundry-rs/foundry/blob/master/crates/anvil): Anvil is a local TestNet node that can be used for development purposes. It has the ability to fork preexisting networks.
 - [Chisel](https://github.com/foundry-rs/foundry/blob/master/crates/chisel): Chisel is a Solidity REPL (Read-Eval-Print Loop) that allows for quick testing of Solidity snippets.
 
-This guide will provide instructions on how to use Foundry's Forge and Cast tools to interact with Ethereum smart contracts on the Darwinia [Koi TestNet](../getting-started/networks/koi.md).
+This guide will provide instructions on how to use Foundry's Forge and Cast tools to interact with Ethereum smart contracts on the Darwinia [Crab testnet](../getting-started/networks/crab.md).
 
 ## Prerequisites
 
@@ -43,7 +43,7 @@ In addition to these three folders, a git project will also be created along wit
 ## Contract Interaction
 
 !!! note
-    The network provider used in this tutorial is the Koi Testnet. However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
+    The network provider used in this tutorial is the Crab testnet. However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
 
 ### Prepare And Compile Contract
 
@@ -106,7 +106,7 @@ Compiler run successful!
 Start the deployment by running the command:
 
 ```bash
-forge create --rpc-url https://koi-rpc.darwinia.network --private-key 0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc src/storage.sol:Storage
+forge create --rpc-url https://crab-rpc.darwinia.network --private-key 0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc src/storage.sol:Storage
 ```
 
 The output like this:
@@ -126,7 +126,7 @@ Transaction hash: 0x8a9089e9aaf1569807cf3bae0f525370a490444fb6c55702aee46aaad70e
 Run the command:
 
 ```bash
-cast send --private-key 0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc --rpc-url https://koi-rpc.darwinia.network 0x0De784894D8FfE792EA7cF108E96f6e4451D066E "store(uint256)" 3
+cast send --private-key 0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc --rpc-url https://crab-rpc.darwinia.network 0x0De784894D8FfE792EA7cF108E96f6e4451D066E "store(uint256)" 3
 ```
 
 The output:
@@ -152,7 +152,7 @@ type                    2
 Run the command:
 
 ```bash
-cast call 0x0De784894D8FfE792EA7cF108E96f6e4451D066E "retrieve()" --rpc-url https://koi-rpc.darwinia.network
+cast call 0x0De784894D8FfE792EA7cF108E96f6e4451D066E "retrieve()" --rpc-url https://crab-rpc.darwinia.network
 ```
 
 The output:

docs/build/ethereum-tools/interact-with-hardhat.md

@@ -58,7 +58,7 @@ These are the default paths for a Hardhat project.
 ## Contract Interaction
 
 !!! note
-    The network provider used in this tutorial is the [Koi Testnet](../getting-started/networks/koi.md). However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
+    The network provider used in this tutorial is the [Crab testnet](../getting-started/networks/crab.md). However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
 
 
 ### Prepare And Compile Contract
@@ -114,25 +114,25 @@ Compiled 1 Solidity file successfully
 
 ### Update Hardhat Config
 
-Before working with the contracts, there are a few basic configurations that need to be set up. Replace the default **`hardhat.config`** file with the following content. This configuration includes the Koi network RPC information and adds a test account:
+Before working with the contracts, there are a few basic configurations that need to be set up. Replace the default **`hardhat.config`** file with the following content. This configuration includes the Crab network RPC information and adds a test account:
 
 ```jsx linenums="1" title="hardhat.config"
 require("@nomicfoundation/hardhat-toolbox");
 
 /** @type import('hardhat/config').HardhatUserConfig */
 module.exports = {
   solidity: "0.8.19",
-  defaultNetwork: "koi",
+  defaultNetwork: "crab",
   networks: {
-    koi: {
-      url: "https://koi-rpc.darwinia.network",
+    crab: {
+      url: "https://crab-rpc.darwinia.network",
       accounts: ["0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc"]
     }
   }
 };
 ```
 
-By updating the **`hardhat.config`** file with this content, you will have the necessary configurations in place to interact with the Koi network and use the test account for testing purposes.
+By updating the **`hardhat.config`** file with this content, you will have the necessary configurations in place to interact with the Crab network and use the test account for testing purposes.
 
 ### Deploy Storage Contract
 
@@ -158,7 +158,7 @@ main().catch((error) => {
 Start the deployment by running the command:
 
 ```jsx
-npx hardhat run --network koi scripts/deploy.js
+npx hardhat run --network crab scripts/deploy.js
 ```
 
 The output like this:
@@ -206,7 +206,7 @@ ContractTransactionResponse {
       _initializingPromise: [Promise],
       provider: [BackwardsCompatibilityProviderAdapter]
     },
-    _networkName: 'koi',
+    _networkName: 'crab',
     _blockListeners: [],
     _transactionHashListeners: Map(0) {},
     _eventListeners: []

docs/build/ethereum-tools/interact-with-web3js.md

@@ -43,7 +43,7 @@ npm install [email protected]"
 
 
 !!! note
-    The network provider used in this tutorial is the [Koi testnet](../getting-started/networks/koi.md). However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
+    The network provider used in this tutorial is the [Crab testnet](../getting-started/networks/crab.md). However, the concepts and techniques covered in this tutorial are applicable to other Darwinia networks as well.
 
 ### Prepare Contract
 
@@ -157,7 +157,7 @@ const accountFrom = {
     privateKey: "0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc",
 }
 
-const web3 = new Web3('https://koi-rpc.darwinia.network');
+const web3 = new Web3('https://crab-rpc.darwinia.network');
 const abi = contractMetadata.contracts["storage.sol:Storage"].abi;
 const bin = contractMetadata.contracts["storage.sol:Storage"].bin;
 
@@ -232,7 +232,7 @@ const accountFrom = {
     address: "0x6Bc9543094D17f52CF6b419FB692797E48d275d0",
     privateKey: "0xd5cef12c5641455ad949c3ce8f9056478eeda53dcbade335b06467e8d6b2accc",
 }
-const web3 = new Web3('https://koi-rpc.darwinia.network');
+const web3 = new Web3('https://crab-rpc.darwinia.network');
 const abi = contractMetadata.contracts["storage.sol:Storage"].abi;
 
 const store = async () => {
@@ -283,7 +283,7 @@ const contractMetadata = require("./metadata.json");
 // The contract address deployed in last step
 const contractAddress = '0x677163264bcb88A6f8F71E2B7D88F51d54325AB1';
 
-const web3 = new Web3('https://koi-rpc.darwinia.network');
+const web3 = new Web3('https://crab-rpc.darwinia.network');
 const abi = contractMetadata.contracts["storage.sol:Storage"].abi;
 
 const retrieve = async () => {

docs/build/getting-started/networks/crab.md

@@ -1,8 +1,5 @@
-# Crab Chain
-
-Crab serves as Darwinia's incentivized testnet network with genuine economic significance, akin to how Kusama functions for Polkadot.
-
-Crab is now a [parachain of Kusama](https://kusama.subscan.io/parachain/2105).
+# Crab Chain(Testnet)
+The Crab, a [parachain of Kusama](https://kusama.subscan.io/parachain/2105), now serves as Darwinia’s primary test network. It is officially maintained to ensure that new and innovative features are thoroughly tested before being deployed to the main production network.
 
 ## Connect Wallet Automatically