feat(integrations): add Zapier integration for Mem0

Zapier Platform CLI app (zapier-mem0) with Add Memory / Delete Memory
creates and Search Memories / Get Memories searches against the Mem0 v3
API. Custom API-key auth (Authorization: Token), base-URL + auth
injected via beforeRequest middleware, non-2xx surfaced as errors.

Add Memory polls GET /v1/event/{id}/ for async extraction. Includes an
E2E test suite via createAppTester.

integrations/zapier-mem0/middleware.js

@@ -0,0 +1,29 @@
+'use strict';
+
+// Prepend the configured base URL and inject the auth header on every request.
+const includeApiKey = (request, z, bundle) => {
+	if (bundle.authData && bundle.authData.apiKey) {
+		request.headers = request.headers || {};
+		request.headers.Authorization = `Token ${bundle.authData.apiKey}`;
+	}
+	// Resolve relative URLs against the configured base URL.
+	if (request.url && request.url.startsWith('/')) {
+		const base = (bundle.authData && bundle.authData.baseUrl) || 'https://api.mem0.ai';
+		request.url = `${base.replace(/\/$/, '')}${request.url}`;
+	}
+	return request;
+};
+
+// Surface auth failures as Zapier auth errors so users are prompted to reconnect.
+const handleBadResponses = (response, z, _bundle) => {
+	if (response.status === 401 || response.status === 403) {
+		throw new z.errors.Error(
+			'The Mem0 API key you supplied is invalid or lacks access.',
+			'AuthenticationError',
+			response.status,
+		);
+	}
+	return response;
+};
+
+module.exports = { includeApiKey, handleBadResponses };