Update the list after editing or deleting a zet

zet

@@ -44,7 +44,7 @@ delete_zet() {
   if [[ -d "$dir" ]]; then
     mv -v "$dir" "/tmp/zet-${id}"
 
-    # TODO: Delete from $ZET_TMP.
+    update_zet_list
   else
     echo "Note not found: $id" >&2
     exit 1
@@ -61,7 +61,7 @@ edit_zet() {
 
     commit_changes "$file" "Edit $file"
 
-    # TODO: Update $ZET_TMP if the title is changed.
+    update_zet_list
   else
     result="$(search_zets "$query")"
     result_count="$(echo "$result" | grep -c '^')"
@@ -148,4 +148,13 @@ show_zet() {
   exit 1
 }
 
+update_zet_list() {
+  find "$ZET_DIR" -type f -name 'index.adoc' | while read -r filename; do
+    id=$(basename "$(dirname "$filename")")
+    title=$(head -n 1 "$filename" | sed 's/^= //' | sed 's/^# //')
+
+    echo "$id $title"
+  done | sort > "$ZET_TMP" &
+}
+
 main "$@"