Bring SafeguardJava up to date with the modern Java ecosystem, improve testing, and add missing functionality found in SafeguardDotNet.

.editorconfig

@@ -0,0 +1,27 @@
+# EditorConfig: https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.{json,yml,yaml}]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.xml]
+indent_size = 4
+
+[*.{pfx,cer,pvk}]
+charset = unset
+end_of_line = unset
+indent_style = unset
+indent_size = unset
+insert_final_newline = unset
+trim_trailing_whitespace = unset

.gitattributes

@@ -0,0 +1,9 @@
+# Set default behavior to automatically normalize line endings
+* text=auto eol=lf
+
+# Binary files
+*.jar binary
+*.pfx binary
+*.jks binary
+*.png binary
+*.ico binary

.gitignore

@@ -24,4 +24,13 @@ hs_err_pid*
 /target/
 /jenkins-plugin/safeguard4jenkins/target/
 /safeguard4jenkins/target/
-/tests/safeguardjavaclient/target/
+/tests/safeguardjavaclient/target/
+
+# JetBrains IDEs
+.idea/
+*.iml
+*.iws
+*.ipr
+
+# Copilot instructions (keep local only)
+.github/copilot-instructions.md