bug fixes, and performance improvements, and drawer

tests/topic-rename.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, test } from "bun:test";
+import { addPendingRename, cancelPendingRename, completeRename } from "../server/utils/renames";
+import { provisionalTopicTitle } from "../utils/topic-title";
+
+describe("rename attempt ownership", () => {
+    test("an old completion cannot remove a newer attempt", () => {
+        addPendingRename("topic", "old");
+        const current = addPendingRename("topic", "new");
+        completeRename("topic", "old");
+        cancelPendingRename("topic", "new");
+        expect(current.signal.aborted).toBe(true);
+    });
+
+    test("an old cancellation cannot abort a newer attempt", () => {
+        const current = addPendingRename("topic", "new");
+        cancelPendingRename("topic", "old");
+        expect(current.signal.aborted).toBe(false);
+        completeRename("topic", "new");
+    });
+
+    test("cancellation is safe after completion or restart", () => {
+        cancelPendingRename("missing", "old");
+        const current = addPendingRename("topic", "new");
+        completeRename("topic", "new");
+        cancelPendingRename("topic", "new");
+        expect(current.signal.aborted).toBe(false);
+    });
+});
+
+describe("provisional titles", () => {
+    test("uses the first meaningful line and normalizes whitespace", () => {
+        expect(provisionalTopicTitle({ content: "\n  Help   me debug this\nMore details" })).toBe("Help me debug this");
+    });
+    test("names attachment-only conversations", () => {
+        expect(provisionalTopicTitle({ content: "", files: [{ name: "photo.jpg" }] })).toBe("photo.jpg");
+        expect(provisionalTopicTitle({ content: "", fileIds: ["image"] })).toBe("Attached files");
+    });
+    test("bounds title length and handles empty input", () => {
+        expect(provisionalTopicTitle({ content: "a".repeat(200) })).toHaveLength(100);
+        expect(provisionalTopicTitle()).toBe("New Topic");
+    });
+});