feat: add sidebar type-to-search

apps/desktop/src/lib/sidebarTypeSearch.ts

@@ -0,0 +1,25 @@
+export interface SidebarTypeSearchKeyEvent {
+  key: string;
+  ctrlKey?: boolean;
+  metaKey?: boolean;
+  altKey?: boolean;
+  isComposing?: boolean;
+}
+
+export function isEditableSidebarTypeSearchTarget(target: EventTarget | null): boolean {
+  if (!(target instanceof HTMLElement)) return false;
+  return !!target.closest("input, textarea, select, [contenteditable='true'], .cm-editor");
+}
+
+export function sidebarTypeSearchNextQuery(currentQuery: string, event: SidebarTypeSearchKeyEvent): string | null {
+  if (event.ctrlKey || event.metaKey || event.altKey || event.isComposing) return null;
+
+  if (event.key === "Backspace") {
+    if (!currentQuery) return null;
+    return currentQuery.slice(0, -1);
+  }
+
+  if (event.key.length !== 1) return null;
+  if (event.key === " " && !currentQuery.trim()) return null;
+  return `${currentQuery}${event.key}`;
+}