fix(agent): normalize session names

packages/agent/src/harness/session/session.ts

@@ -234,12 +234,13 @@ export class Session<TMetadata extends SessionMetadata = SessionMetadata> {
 	}
 
 	async appendSessionName(name: string): Promise<string> {
+		const sanitizedName = name.replace(/[\r\n]+/g, " ").trim();
 		return this.appendTypedEntry({
 			type: "session_info",
 			id: await this.storage.createEntryId(),
 			parentId: await this.storage.getLeafId(),
 			timestamp: new Date().toISOString(),
-			name: name.trim(),
+			name: sanitizedName,
 		} satisfies SessionInfoEntry);
 	}
 

packages/agent/test/harness/session.test.ts

@@ -86,6 +86,12 @@ async function runSessionSuite(
 			expect(context.messages[1]?.role).toBe("custom");
 		});
 
+		it("normalizes session names", async () => {
+			const session = new Session(await createStorage());
+			await session.appendSessionName(" hello\nworld\r\nagain ");
+			expect(await session.getSessionName()).toBe("hello world again");
+		});
+
 		it("supports labels and session info entries without affecting context", async () => {
 			const session = new Session(await createStorage());
 			const user1 = await session.appendMessage(createUserMessage("one"));