feat(JjLib): JjLib implementation

nix/shell.nix

@@ -23,22 +23,22 @@ inputs.devenv.lib.mkShell {
         just
       ];
 
-      processes.run.exec = "cargo watch -x run";
+      # processes.run.exec = "cargo watch -x run";
 
-      enterShell = ''
-        echo ""
-        echo "Rust development environment loaded!"
-        echo "Rust version: $(rustc --version)"
-        echo "Cargo version: $(cargo --version)"
-        echo ""
-        echo "Available tools:"
-        echo "  - rust-analyzer (LSP)"
-        echo "  - clippy (linter)"
-        echo "  - rustfmt (formatter)"
-        echo "  - bacon (continuous testing/linting)"
-        echo "  - cargo-deny (dependency checker)"
-        echo "  - cargo-tarpaulin (code coverage)"
-      '';
+      # enterShell = ''
+      #   echo ""
+      #   echo "Rust development environment loaded!"
+      #   echo "Rust version: $(rustc --version)"
+      #   echo "Cargo version: $(cargo --version)"
+      #   echo ""
+      #   echo "Available tools:"
+      #   echo "  - rust-analyzer (LSP)"
+      #   echo "  - clippy (linter)"
+      #   echo "  - rustfmt (formatter)"
+      #   echo "  - bacon (continuous testing/linting)"
+      #   echo "  - cargo-deny (dependency checker)"
+      #   echo "  - cargo-tarpaulin (code coverage)"
+      # '';
     }
   ];
 }