diff --git a/.gitignore b/.gitignore
index d3460a3..a457115 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,19 @@
 .idea/
 *.swp
 *.swo
+
+# Obsidian machine-specific / regenerated state
+.smart-env/
+.smart-env.json
+.trash/
+.tmp.driveupload/
+.zettel-notes/
+.space/
+.ttxfolder
+*.ajson
+
+# Claude/agent scratch
+Claude-4.md
+
+# OS
+Thumbs.db