diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..0f17867
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..fbd75d3
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text=lf
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 41f6205..4884338 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,6 @@ _del
 *.log
 *.del
 **/_del
+
+**/volumes/**
+006_lab
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..5364acd
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,18 @@
+# TODO
+
+- [ ] quiz -> listening practice content change to use api
+- [ ] quiz -> matching frenzy content change to use api
+- [ ] quiz -> connective revision content change to use api
+- [x] lesson content change to use api
+
+- [ ] rework for dockerfile, docker-compose for nvm
+
+---
+
+last stopped at:
+
+`http://localhost:3000/dashboard/lesson_categories/edit/k17skxdo4j6w39f`
+
+## related
+
+[[001_documentation/Requirements/REQ0002/index.md]]
diff --git a/backup.sh b/backup.sh
new file mode 100755
index 0000000..951a3af
--- /dev/null
+++ b/backup.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+set -ex
+
+# tar -zcvf ./_archive/020_update_fix_edit_page_error.tar.gz \
+#   --exclude "node_modules" \
+#   --exclude ".next" \
+#   --exclude ".git" \
+#   ./project
+
+rsync -avh \
+  --exclude ".next" \
+  --exclude "node_modules" \
+  --exclude ".git" \
+  . ../_archive/022_init_lesson_categories
+
+echo "done"