fix: Remove unused variable warning and add release build script

- Fix unused `project_path` parameter warning in make_executable()
- Add build-release.sh for automated binary packaging
- Update .gitignore to exclude release artifacts
- Support cross-compilation for Linux and Windows binaries

Release artifacts are now built with ./build-release.sh and uploaded
to Gitea releases separately, keeping the git repo clean.

README.md

@@ -86,7 +86,7 @@ weevil sdk status
 ### From Source
 
 ```bash
-git clone https://github.com/yourusername/weevil.git
+git clone https://www.nxgit.dev/nexus-workshops/weevil.git
 cd weevil
 cargo build --release
 sudo cp target/release/weevil /usr/local/bin/
@@ -255,7 +255,7 @@ weevil new competition-bot
 cd competition-bot
 
 # Project is already a git repo!
-git remote add origin https://github.com/team/robot.git
+git remote add origin https://nxgit.dev/team/robot.git
 git push -u origin main
 
 # Make changes
@@ -287,7 +287,7 @@ git push
 **Project Structure is Portable:**
 ```bash
 # Team member clones repo
-git clone https://github.com/team/robot.git
+git clone https://nxgit.dev/team/robot.git
 cd robot
 
 # Check SDK location
@@ -466,7 +466,7 @@ Contributions welcome! Please:
 ### Development Setup
 
 ```bash
-git clone https://github.com/yourusername/weevil.git
+git clone https://www.nxgit.dev/nexus-workshops/weevil.git
 cd weevil
 cargo build
 cargo test
@@ -511,7 +511,7 @@ Built with frustration at unnecessarily complex robotics frameworks, and hope th
 
 ## Project Status
 
-**Current Version:** 1.0.0-beta1
+**Current Version:** 1.0.0-beta2
 
 **What Works:**
 - ✅ Project generation
@@ -532,4 +532,4 @@ Built with frustration at unnecessarily complex robotics frameworks, and hope th
 
 **Questions? Issues? Suggestions?**
 
-Open an issue on GitHub or reach out to the FTC community. Let's make robot programming accessible for everyone! 🚀
+Open an issue on NXGit or reach out to the FTC community. Let's make robot programming accessible for everyone! 🚀