feat(writekit): rename @robonen/editor to @robonen/writekit

Rename the rich-text editor package and all Editor* exports to Writekit*;
remove the old vue/editor tree.

vue/writekit/src/view/ui/slash-items.ts

@@ -0,0 +1,33 @@
+import type { Registry } from '../../registry';
+
+/** A slash-menu entry derived from a block definition's metadata. */
+export interface SlashItem {
+  type: string;
+  title: string;
+  group: string;
+  keywords: readonly string[];
+}
+
+/**
+ * Build slash-menu items from the registry, filtered by `query` against each
+ * block's title and keywords. Data-driven: any newly registered block with
+ * `meta` shows up automatically.
+ */
+export function getSlashItems(registry: Registry, query = ''): SlashItem[] {
+  const items: SlashItem[] = registry.listBlocks()
+    .filter(def => def.meta !== undefined)
+    .map(def => ({
+      type: def.type,
+      title: def.meta!.title,
+      group: def.meta!.group ?? 'blocks',
+      keywords: def.meta!.keywords ?? [],
+    }));
+
+  const q = query.trim().toLowerCase();
+  if (!q)
+    return items;
+
+  return items.filter(item =>
+    item.title.toLowerCase().includes(q) || item.keywords.some(keyword => keyword.toLowerCase().includes(q)),
+  );
+}