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

client/docs/windows_deploy.md

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+# Windows Deployment Guide (.exe)
+
+To ensure the client is a lightweight `.exe` that consumes less than 256MB of RAM, follow these build instructions.
+
+## 🛠 Build Process
+
+1. **Environment Setup**:
+   - Install [Rust](https://rustup.rs/).
+   - Install [LLVM](https://llvm.org/build/) (required for some networking crates).
+
+2. **Optimization Flags**:
+   To keep the binary small and memory usage low, use the following `Cargo.toml` profile:
+   ```toml
+   [profile.release]
+   opt-level = 'z'     # Optimize for size
+   lto = true          # Link Time Optimization
+   codegen-units = 1   # Maximize optimization
+   panic = 'abort'     # Remove stack unwinding (saves space/RAM)
+   strip = true        # Remove symbols from the binary
+   ```
+
+3. **Building the .exe**:
+   ```bash
+   cargo build --release
+   ```
+   The resulting executable will be in `target/release/meshvpn-client.exe`.
+
+## 📦 Resource Constraints (< 256MB RAM)
+To guarantee low memory usage:
+- **Asynchronous Runtime**: Using `tokio` with the `current_thread` scheduler instead of `multi_thread` to reduce thread overhead.
+- **Zero-Copy**: Using `bytes` crate for packet handling to avoid unnecessary memory allocations.
+- **No GUI**: By keeping it a CLI tool, we avoid the massive overhead of Electron or similar frameworks.
+
+## 🚦 Administrator Requirements
+The `.exe` must be run as **Administrator** to:
+1. Load the `wintun.dll`.
+2. Create the virtual network adapter.
+3. Set routing table entries.