v1.2.0: rewrite in Python (mirrors dhcpsrv); clickable update link

.gitignore

@@ -1,8 +1,22 @@
-# Build output / staging
-*.exe
+# PyInstaller build artifacts
+build/
+dist/
+*.spec
+
+# Python cache
+__pycache__/
+*.py[cod]
+
+# Local build cache (prod/test/old portable folders per version)
+builds/
+
+# Legacy staging folders (kept for compatibility with old checkouts)
 portable-v*/
 
-# Local backup of release archives
+# Stray standalone exe (we never commit binaries — they live in GitHub releases)
+*.exe
+
+# Local backup of release archives (kept locally for history, not in repo)
 releases/
 
 # Editor / OS junk