feat(app): add open in editor toolbar action (#209)

* feat(app): add open in editor toolbar action

* fix(app): normalize editor icon asset permissions

* chore(website): drop unrelated generated route tree change

packages/app/src/hooks/use-preferred-editor.test.ts

@@ -0,0 +1,20 @@
+import { describe, expect, it } from "vitest";
+import { resolvePreferredEditorId } from "./use-preferred-editor";
+
+describe("resolvePreferredEditorId", () => {
+  it("keeps the stored editor when it is still available", () => {
+    expect(resolvePreferredEditorId(["cursor", "vscode"], "vscode")).toBe("vscode");
+  });
+
+  it("falls back to the first available editor when the stored one is missing", () => {
+    expect(resolvePreferredEditorId(["zed", "finder"], "cursor")).toBe("zed");
+  });
+
+  it("falls back when a platform-specific file manager target is unavailable", () => {
+    expect(resolvePreferredEditorId(["explorer", "vscode"], "finder")).toBe("explorer");
+  });
+
+  it("returns null when no editors are available", () => {
+    expect(resolvePreferredEditorId([], "cursor")).toBeNull();
+  });
+});