Added: Network Configuration; .gitignore

.gitignore

@@ -1,3 +1,43 @@
-./cyber-rpi.tar.gz
-./result 
-./nixos-rpi4.img
+# Nix build outputs
+result
+result-*
+*.img
+*.img.zst
+*.qcow2
+
+# Nix store
+.dirlocals
+
+# Build artifacts
+*.o
+*.a
+*.so
+*.dylib
+
+# IDE/Editor
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Archives
+*.tar.gz
+*.tar.bz2
+*.zip
+
+# Local development
+.envrc
+direnv.allow
+
+# Flake lock (optional - usually committed, but some prefer not to)
+# flake.lock
+
+# Temporary files
+*.tmp
+*.bak