Add Cargo.lock file and remove it from .gitignore for reproducible builds

Co-authored-by: 0xrinegade <[email protected]>

Author: Copilot

.gitignore

@@ -1,9 +1,8 @@
 # Generated by Cargo
 /target/
-Cargo.lock
 logs/
 logs-runtime.log
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# Cargo.lock is tracked for executables to ensure reproducible builds
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
 
 # These are backup files generated by rustfmt