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/keymap/normalize.ts

@@ -0,0 +1,52 @@
+import type { Platform } from '../view/config';
+
+const MOD_ORDER = ['Ctrl', 'Alt', 'Shift', 'Meta'] as const;
+
+function modAlias(token: string, platform: Platform): string | null {
+  switch (token.toLowerCase()) {
+    case 'mod': return platform === 'mac' ? 'Meta' : 'Ctrl';
+    case 'cmd':
+    case 'command':
+    case 'meta': return 'Meta';
+    case 'ctrl':
+    case 'control': return 'Ctrl';
+    case 'alt':
+    case 'option': return 'Alt';
+    case 'shift': return 'Shift';
+    default: return null;
+  }
+}
+
+/**
+ * Normalize a human combo (`'Mod-Shift-z'`) to a canonical, platform-resolved
+ * form (`'Shift-Meta-z'` on mac). Modifiers are ordered deterministically so a
+ * keydown event maps to the same string via {@link eventToCombo}.
+ */
+export function normalizeCombo(combo: string, platform: Platform): string {
+  const parts = combo.split(/[-+]/).map(part => part.trim()).filter(Boolean);
+  const key = parts.pop() ?? '';
+  const mods = new Set<string>();
+
+  for (const part of parts) {
+    const mod = modAlias(part, platform);
+    if (mod)
+      mods.add(mod);
+  }
+
+  const order = MOD_ORDER.filter(mod => mods.has(mod));
+  const normalizedKey = key.length === 1 ? key.toLowerCase() : key;
+  return [...order, normalizedKey].join('-');
+}
+
+/** Canonical combo string for a keydown event (matches {@link normalizeCombo}). */
+export function eventToCombo(event: KeyboardEvent): string {
+  const mods: string[] = [];
+
+  if (event.ctrlKey) mods.push('Ctrl');
+  if (event.altKey) mods.push('Alt');
+  if (event.shiftKey) mods.push('Shift');
+  if (event.metaKey) mods.push('Meta');
+
+  const key = event.key.length === 1 ? event.key.toLowerCase() : event.key;
+  return [...mods, key].join('-');
+}