[Doc] README updates (#3)

* remove not needed info

* Reorganize README sections for clarity

Reorganized the README to include the Web Stack section before Project Structure and removed the old Web Stack section.

* pre-commit instruction

* Add additional contact email to README

Author: jiarong0907

README.md

@@ -1,12 +1,6 @@
-
 # Project Overview
 
-RouterArena is the first open platform enabling comprehensive evaluation and comparison of LLM routers. The platform features:
-
-- **Principled Dataset**: 8,400 queries across 9 domains and 44 categories using Dewey Decimal Classification and Bloom's taxonomy
-- **Multi-Dimensional Metrics**: Arena Score, Cost Ratio, Optimality, Latency, and Robustness evaluation
-- **Automated Framework**: Support for both academic and commercial routers with real-time leaderboard updates
-- **Fair Comparison**: Unified evaluation protocol for transparent and reproducible results
+RouterArena is the first open platform enabling comprehensive evaluation and comparison of LLM routers. Check out the [website](https://routeworks.github.io) for more details.
 
 ## Research Team
 
@@ -20,42 +14,7 @@ RouterArena is the first open platform enabling comprehensive evaluation and com
 - Hongyi Liu (hl87@rice.edu)
 - Jiarong Xing (jxing@rice.edu)
 
-## Website Features
-
-### 🏠 Home Page
-- Project overview and key features
-- Dataset statistics and difficulty levels
-- Contact information and collaboration details
-- Interactive leaderboard preview
-
-### 🏆 Leaderboard Page
-- Comprehensive router rankings across multiple metrics
-- Search and filter functionality
-- Detailed performance metrics for each router
-- Links to papers and source code
-
-### 📝 Submit Page
-- Router submission form for evaluation
-- Clear guidelines for academic and commercial routers
-- Evaluation process explanation
-- Contact information for collaboration
-
-### ℹ️ About Page
-- Detailed project methodology
-- Research team information
-- Citation information
-- Contact and collaboration details
-
-## Technology Stack
-
-- **Frontend**: React 19.2.0 with TypeScript
-- **Routing**: React Router DOM 6.8.1
-- **Icons**: Lucide React 0.263.1
-- **Charts**: Recharts 2.8.0
-- **Styling**: CSS3 with modern features
-- **Build Tool**: Create React App
-
-## Getting Started
+## For Developers
 
 ### Prerequisites
 
@@ -90,7 +49,37 @@ npm run build
 
 This builds the app for production to the `build` folder.
 
-## Project Structure
+### Coding/PR Style Check
+
+We use pre-commit to ensure a consistent coding style. You can set it up by
+
+```
+pip install pre-commit
+pre-commit install
+```
+
+Before pushing your code, please run the following check and make sure your code passes all checks.
+
+```
+pre-commit run --all-files
+```
+
+We have set up Google Gemini to review your code. You can use it by running the following command:
+
+```
+/gemini review
+```
+
+### Web Stack
+
+- **Frontend**: React 19.2.0 with TypeScript
+- **Routing**: React Router DOM 6.8.1
+- **Icons**: Lucide React 0.263.1
+- **Charts**: Recharts 2.8.0
+- **Styling**: CSS3 with modern features
+- **Build Tool**: Create React App
+
+### Project Structure
 
 ```
 src/
@@ -114,8 +103,6 @@ src/
 └── index.tsx           # Application entry point
 ```
 
-## Key Components
-
 ### Router Data Structure
 ```typescript
 interface Router {
@@ -137,14 +124,6 @@ interface Router {
 }
 ```
 
-### Evaluation Metrics
-
-1. **Arena Score**: Overall performance combining accuracy and cost efficiency
-2. **Cost Ratio Score**: Efficiency in cost optimization relative to optimal routing
-3. **Optimality Score**: Frequency of selecting the most efficient model for each query
-4. **Latency Score**: Router overhead and response time performance
-5. **Robustness Score**: Stability against query perturbations and noise
-
 ## Contributing
 
 We welcome contributions to the RouterArena platform! Please see our submission guidelines on the website or contact us directly.
@@ -167,7 +146,7 @@ If you use RouterArena in your research, please cite our paper:
 
 ## Contact
 
-- **Email**: yifan.lu@rice.edu
+- **Email**: yifan.lu@rice.edu, jxing@rice.edu
 - **Paper**: https://www.arxiv.org/abs/2510.00202
 
 ## Acknowledgments