diff --git a/.gitignore b/.gitignore
index 4e8cd71..be231e2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,9 @@ BV_DOCS_PLAN.local.md
 .codex-worktrees/
 .codex-test
 .abacusai/
+
+# Local LUT catalog state and downloaded resources
+/user/default/bv_nodepack/lut_catalog.json
+/user/default/bv_nodepack/lut_catalog.experimental.json
+/user/default/bv_nodepack/lut_catalog_settings.json
+/models/luts/downloaded/
diff --git a/py/util/lut_catalog.experimental.json b/py/util/lut_catalog.experimental.json
new file mode 100644
index 0000000..22be5c0
--- /dev/null
+++ b/py/util/lut_catalog.experimental.json
@@ -0,0 +1,8 @@
+{
+  "schema": "bv.lut-download-catalog",
+  "version": 1,
+  "catalog_version": 1,
+  "channel": "experimental",
+  "checked_at": "2026-08-28",
+  "entries": []
+}
diff --git a/py/util/lut_catalog.json b/py/util/lut_catalog.json
index abda85c..f56a15a 100644
--- a/py/util/lut_catalog.json
+++ b/py/util/lut_catalog.json
@@ -1,6 +1,8 @@
 {
   "schema": "bv.lut-download-catalog",
   "version": 1,
+  "catalog_version": 1,
+  "channel": "stable",
   "checked_at": "2026-08-26",
   "entries": [
     {