project02 complete, add .gitignore

.gitignore

@@ -0,0 +1,30 @@
+# Compiled outputs
+*.hack
+*.out
+
+# Simulator-generated files
+*.cmp
+*.diff
+*.log
+*.out
+
+# OS-generated files
+.DS_Store
+Thumbs.db
+
+# IDE / editor settings
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Build artifacts (if using assembler/compiler scripts)
+bin/
+out/
+target/
+
+# Python / Java tooling (if you extend projects with custom scripts)
+__pycache__/
+*.pyc
+*.class