feat: remove the need for nodes to have public URLs

[tatiesmars]

Makes the reconstruction-server easier to scale as servers don't need to have a 1-to-1 mapping to ingresses etc.

[Copilot]

Pull request overview

This PR removes the requirement for reconstruction nodes to have public URLs by eliminating the NODE_URL environment variable. This simplifies deployment and improves scalability by removing the need for 1-to-1 mappings between servers and ingresses.

Changes:

• Hardcoded reconstruction_server_url to None in both local and global reconstruction runners
• Removed NODE_URL environment variable from documentation and configuration files
• Eliminated port 8080 exposure requirements and associated ingress setup instructions

Reviewed changes

Copilot reviewed 6 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
server/rust/runner-reconstruction-local/src/lib.rs	Set reconstruction_server_url to None instead of reading from NODE_URL env var
server/rust/runner-reconstruction-global/src/lib.rs	Set reconstruction_server_url to None instead of reading from NODE_URL env var
server/rust/README.md	Removed NODE_URL setup instructions and health endpoint verification steps
server/rust/Makefile	Removed NODE_URL environment variable from run configuration
docs/deployment.md	Removed ngrok setup, port exposure requirements, and NODE_URL configuration
README.MD	Removed NODE_URL from environment file and ngrok setup instructions

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[robinlindh]

I tried running it and it worked well, even without port. Just pushed also to remove the ngrok troubleshooting text. Rest looks good to me.

[robinlindh]

Ahhh @tatiesmars we also need to update the minimum-requirements.md to not require public URL anymore.