Enhance README with features and setup instructions

README.md

@@ -1,3 +1,55 @@
 # ethui explorer
 
-https://explorer.ethui.dev
+A **local-first blockchain explorer** built for **Anvil** and other local Ethereum networks.  
+Inspect **blocks**, **transactions**, and **addresses** — then **simulate** and **execute** smart contract calls — all from your browser.
+
+👉 **[Try it here](https://explorer.ethui.dev)**
+
+---
+
+## 🚀 Overview
+
+`ethui explorer` combines the essentials of a blockchain explorer with the power of a local execution environment.  
+It’s designed for developers who need to **see everything on their chain** and **interact with it directly**, without leaving the browser.
+
+### Core Highlights
+
+- **🔍 Explore Everything**
+  - Navigate **blocks**, **transactions**, and **addresses** with detailed decoding.
+  - Inspect calldata, events, and execution traces from local or remote RPCs.
+- **🧱 Contract Editing**
+  - Input or modify **ABIs** directly in the contract page using the **Edit ABI** button.
+  - Decode transaction data instantly after ABI update.
+- **⚡ Direct Executions**
+  - Execute contract functions in real time through your **connected wallet**.
+  - Works seamlessly with local RPCs for fast, reproducible testing.
+- **🧪 Simulations**
+  - Dry-run any transaction before sending it — validate outcomes instantly.
+  - Ideal for debugging and verifying contract behavior pre-deployment.
+- **🔌 RPC Connect**
+  - Point the explorer to any Ethereum-compatible endpoint (optimized for **Anvil**).
+- **🪶 Local-First**
+  - All computation happens in your browser. No remote indexing, no data sharing.
+
+---
+
+## 🧩 How It Works
+
+1. **Connect to your RPC**
+   - Input your RPC URL (e.g. `http://localhost:8545`).
+   - Best experience on **Anvil**.
+2. **Explore the chain**
+   - Browse **blocks**, **transactions**, and **addresses**.
+   - Drill into transaction details and decoded contract calls.
+3. **Edit ABIs**
+   - On any contract page, click **Edit ABI** → paste your ABI to enable decoding and interaction.
+4. **Simulate or Execute**
+   - Run **read** and **write** calls directly.
+   - Choose between **simulation** (dry-run) or **execution** (wallet broadcast).
+
+---
+
+## ⚙️ Example Setup (Anvil)
+
+```bash
+anvil --port 8545