feat: align SDK with updated OpenAPI spec and add missing unit tests

- Update generated types from new openapi.yaml (capsule stats, usage,
  metrics, pause/resume lifecycle, host/channel management, auth flow)
- Add Capsule pause/resume/ping/getMetrics lifecycle methods
- Add Capsule.waitForReady abort signal support
- Add PtyManager.connect and PtySession disposal
- Fix HttpClient empty-body response handling (content-length: 0)
- Add streamProcess() to CommandManager for background process streams
- Add integration tests for capsule lifecycle, git, and PTY features
- Add unit tests for AsyncQueue error paths, PtySession.close,
  Git.checkout without create, Git.add single string,
  Notebook.execCell error case, and PtyStartOptions fields

tests/pty.test.ts

@@ -9,11 +9,12 @@ describe("PtyManager", () => {
 		});
 		const sent: unknown[] = [];
 		let onMessage: ((message: unknown) => void) | undefined;
+		const close = vi.fn();
 		vi.spyOn(capsule.client.capsules, "ptySession").mockImplementation(
 			async (_id, opts) => {
 				onMessage = opts.onMessage;
 				return {
-					close: vi.fn(),
+					close,
 					get isClosed() {
 						return false;
 					},
@@ -49,6 +50,9 @@ describe("PtyManager", () => {
 				type: "output",
 			},
 		});
+
+		await session[Symbol.asyncDispose]();
+		expect(close).toHaveBeenCalledOnce();
 	});
 
 	it("connects to an existing PTY tag", async () => {
@@ -68,4 +72,60 @@ describe("PtyManager", () => {
 
 		expect(sent).toEqual([{ tag: "pty-tag", type: "connect" }]);
 	});
+
+	it("closes the connection when close() is called directly", async () => {
+		const capsule = new Capsule("cap_1", {
+			baseUrl: "https://api.example.com",
+		});
+		const close = vi.fn();
+		vi.spyOn(capsule.client.capsules, "ptySession").mockResolvedValue({
+			close,
+			get isClosed() {
+				return false;
+			},
+			send: vi.fn(),
+		} as never);
+
+		const session = await capsule.pty.start();
+		session.close();
+
+		expect(close).toHaveBeenCalledOnce();
+	});
+
+	it("sends all PtyStartOptions fields in the start message", async () => {
+		const capsule = new Capsule("cap_1", {
+			baseUrl: "https://api.example.com",
+		});
+		const sent: unknown[] = [];
+		vi.spyOn(capsule.client.capsules, "ptySession").mockResolvedValue({
+			close: vi.fn(),
+			get isClosed() {
+				return false;
+			},
+			send: (message: unknown) => sent.push(message),
+		} as never);
+
+		await capsule.pty.start({
+			cmd: "/bin/bash",
+			args: ["--login"],
+			cols: 120,
+			rows: 40,
+			envs: { TERM: "xterm-256color" },
+			cwd: "/home/user",
+			user: "user",
+		});
+
+		expect(sent).toEqual([
+			{
+				type: "start",
+				cmd: "/bin/bash",
+				args: ["--login"],
+				cols: 120,
+				rows: 40,
+				envs: { TERM: "xterm-256color" },
+				cwd: "/home/user",
+				user: "user",
+			},
+		]);
+	});
 });