Add Starknet category and Solo Staking guide to documentation

docs/user/staking/starknet/solo.md

@@ -0,0 +1,111 @@
+# 🚀 StarkNet Validator Solo Staking Guide
+
+**StarkNet** is a Layer 2 network built on Ethereum, designed for scalability and performance using STARK proofs.  
+This guide will walk you through the **complete process of becoming a StarkNet validator and Solo Staker**, from wallet setup to running your attestation client and validator on DAppNode.
+
+We’ll use **[Argent Wallet](https://www.argent.xyz/)** and StarkNet's block explorer interfaces for all on-chain interactions.
+
+---
+
+## 🛠 Prerequisites
+
+✅ [Argent Wallet](https://www.argent.xyz/) installed  
+✅ Access to a synced StarkNet full node (e.g., [Juno](https://github.com/dappnode/DAppNodePackage-juno-generic))  
+✅ Minimum STRK balance:
+- **Sepolia:** 1 STRK  
+- **Mainnet:** 20,000 STRK  
+
+---
+
+## 1️⃣ Create Accounts
+
+We’ll use **three StarkNet accounts** in Argent:
+
+- **staker** → Holds your stake  
+- **operator** → Runs the validator  
+- **rewards** → Receives rewards  
+
+👉 Create them directly in Argent Wallet as _Standard Account_
+
+![Argent wallet create account](https://github.com/dappnode/DAppNodePackage-starknetstaking-generic/raw/main/images/argent-create-account.png)
+
+---
+
+## 2️⃣ Fund and Deploy the Accounts
+
+- Fund your **staker** and **operator** accounts with the required STRK amount.  
+> On Sepolia, you can use the [StarkNet Faucet](https://starknet-faucet.vercel.app).  
+
+- Deploy your **accounts** in Argent Wallet following these steps:  
+![account deploy](https://i.imgur.com/LzwWHl0.gif)
+
+---
+
+## 3️⃣ Export your operator address private key
+
+The _starknetstaking_ package needs your **operator** address private key to make the _attestations_.  
+You can obtain it from *Argent Wallet* following these steps:
+![export PK](https://github.com/dappnode/DAppNodePackage-starknetstaking-generic/raw/main/images/export-pk.gif)
+
+---
+
+## 4️⃣ Approve spending
+
+1. Go to the block exporer STRK Token contract [STRK (Sepolia)](https://sepolia.voyager.online/contract/0x04718f5a0fc34cc1af16a1cdee98ffb20c31f5cd61d6ab07201858f4287c938d#writeContract) or [STRK (Mainnet)](https://sepolia.voyager.online/contract/0x04718f5a0fc34cc1af16a1cdee98ffb20c31f5cd61d6ab07201858f4287c938d#writeContract)
+2. Connect your **staker** Argent Wallet.  
+3. Scroll down to the `approve` function.  
+4. Fill in the calldata:
+   - **spender** → Starknet Staking Contract [Starknet Addresses](https://docs.starknet.io/resources/chain-info/#staking)  
+   - **amount** → Amount in FRI (1 STRK = `1000000000000000000`)  
+5. Submit the transaction.  
+
+
+
+## 5️⃣ Stake STRK
+
+1. Open the [Staking Contract on Voyager (Sepolia)](https://sepolia.voyager.online/contract/0x03745ab04a431fc02871a139be6b93d9260b0ff3e779ad9c8b377183b23109f1#writeContract) or the [Staking Contract on Voyager (Mainnet)](https://voyager.online/contract/0x00ca1702e64c81d9a07b86bd2c540188d92a2c73cf5cc0e508d949015e7e84a7#writeContract).  
+2. Connect your **staker** Argent Wallet.  
+3. Scroll down to the `stake` function.  
+4. Fill in the calldata:
+   - **rewards_address** → Your rewards account  
+   - **operational_address** → Your operator account  
+   - **amount** → Amount in FRI (1 STRK = `1000000000000000000`)  
+5. Submit the transaction.  
+
+📌 **Staking contract addresses:** [StarkNet Docs – Staking](https://docs.starknet.io/resources/chain-info/#staking)
+
+![Voyager write contract stake](https://github.com/dappnode/DAppNodePackage-starknetstaking-generic/raw/main/images/voyager-stake.png)
+
+---
+
+## 6️⃣ Install the StarkNet Staking Package on DAppNode
+
+Now that you’ve staked, you need to set up the validator client on your DAppNode.
+
+1. Open your DAppNode UI.  
+2. Go to the **DAppStore** and search for `starknetstaking`.  
+3. Click **Install**.  
+
+Once installed, open the package configuration screen and provide:
+
+- `OPERATIONAL ADDRESS` → Your operator account  
+- `PRIVATE KEY` → The private key from your operator account (exported from Argent Wallet)
+
+The attestation process will start automatically, and your validator will be live.
+
+---
+
+## 🧠 Notes & Tips
+
+- You can **claim rewards** or **increase stake** later from the same Voyager contract UI.  
+- Make sure your validator client runs **24/7** to avoid penalties.  
+- Always test your setup on Sepolia before moving to mainnet.  
+
+---
+
+**References:**
+- [Argent Wallet](https://www.argent.xyz/)  
+- [Voyager StarkNet Explorer](https://voyager.online/)  
+- [Starkscan Starknet Explorer](https://starkscan.co/)  
+- [StarkNet Staking Docs](https://docs.starknet.io/architecture/staking/)  
+- [Juno Full Node](https://github.com/NethermindEth/juno)  

sidebars.js

@@ -264,6 +264,17 @@ const sidebars = {
             },
           ],
         },
+        {
+          type: "category",
+          label: "Starknet",
+          items: [
+            {
+              type: "doc",
+              label: "Starknet Solo Staking",
+              id: "user/staking/starknet/solo",
+            },
+          ],
+        },
       ],
     },
     {