chore: standardize repository ignore rules

.gitignore

@@ -1,36 +1,49 @@
-# Ignore Maven target directory
-target
-
-# Ignore Eclipse/IntelliJ IDEA/NetBeans project files
-*.iml
-.idea/
-*.ipr
-*.iws
-*.bak
-*.swp
-*.tmp
-*.log
-*.class
-
-# NetBeans specific
-nbproject/private/
+# Build output
+target/
 build/
-nbbuild/
+out/
 dist/
+nbbuild/
 nbdist/
-.nb-gradle/
+*.class
+dependency-reduced-pom.xml
 
-# Eclipse specific
+# Build dependencies
+/.build/
+/*.jar
+/libs/*.jar
+
+# Python caches and environments
+__pycache__/
+*.py[cod]
+.venv/
+venv/
+
+# IDE files
+.idea/
+*.iml
+*.ipr
+*.iws
+.vscode/
 .project
 .classpath
 .settings/
+nbproject/private/
+.nb-gradle/
 
-# OS-specific files
+# Logs and temporary files
+*.log
+hs_err_pid*
+replay_pid*
+*.bak
+*.swp
+*.tmp
+*~
+
+# Operating system files
 .DS_Store
 Thumbs.db
+Desktop.ini
 
-# Logs
-*.log
-
-# Downloaded build dependencies
-/libs/*.jar
+# Local investigation notes and test artifacts
+/.scratch/