diff --git a/.gitattributes b/.gitattributes
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index 0000000..6977920
--- /dev/null
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+# Dev-only content excluded from the auto-generated "download" zip (Gitea/GitHub
+# archive endpoint respects export-ignore). Stays in git history and the working
+# copy; just isn't part of what Foundry downloads/installs. Foundry only loads
+# what module.json points to (esmodules/packs); packs-source is human-readable
+# JSON kept for review/editing, not consumed by Foundry itself.
+
+packs-source/ export-ignore
+.gitattributes export-ignore