Add draft/published editor workflow with publish, revert, and dirty indicator

src/app/components/SnippetLibrary.module.css

@@ -71,6 +71,13 @@
   gap: var(--space-1);
 }
 
+.nameRow {
+  display: flex;
+  align-items: center;
+  gap: var(--space-2);
+  min-width: 0;
+}
+
 .name {
   font-size: 13px;
   font-weight: 500;
@@ -79,6 +86,15 @@
   text-overflow: ellipsis;
 }
 
+/* Unpublished-draft indicator (spec §03D / §02 status). */
+.draftDot {
+  flex: 0 0 auto;
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background: var(--accent);
+}
+
 .date {
   font-size: 11px;
   color: var(--text-secondary);