Initial commit: Project structure, Coordinator Server v1.0.0, and Documentation

server/README.md

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+# MeshVPN Coordinator Server
+
+The Coordinator Server is the central brain of the MeshVPN network. It handles node registration, peer signaling, and provides STUN services for NAT traversal.
+
+## Features
+- **Integrated STUN Server**: Helps clients discover their public endpoints.
+- **Node Coordination**: Manages public keys and virtual IP assignments.
+- **Signaling**: Facilitates UDP hole punching between peers.
+- **Web Dashboard**: (Coming soon) Visualization of the mesh network.
+
+## Installation
+
+### Prerequisites
+- [Go](https://go.dev/dl/) (1.21+)
+- [Redis](https://redis.io/download) (For real-time node state)
+- [PostgreSQL](https://www.postgresql.org/download/) (For identity and ACLs)
+
+### Setup
+1. **Clone the repository**
+2. **Install dependencies**:
+   ```bash
+   go mod tidy
+   ```
+3. **Configure Environment**:
+   Create a `.env` file with:
+   ```env
+   REDIS_ADDR=localhost:6379
+   POSTGRES_URL=postgres://user:pass@localhost:5432/meshvpn
+   STUN_PORT=3478
+   COORD_PORT=50051
+   ```
+4. **Run the server**:
+   ```bash
+   go run main.go
+   ```
+
+## API Endpoints
+- **STUN**: UDP port 3478
+- **gRPC Coordinator**: TCP port 50051