feat(integrations): add @mem0/eve memory provider

Give Eve agents a first-class Mem0 recall/capture provider so they can use Mem0 in the agent loop instead of MCP.

Co-authored-by: Cursor <cursoragent@cursor.com>

integrations/eve/tests/idempotency.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from "vitest";
+import { createIdempotencyGate } from "../src/idempotency.js";
+
+describe("createIdempotencyGate", () => {
+  it("runs work once per operation id", async () => {
+    const once = createIdempotencyGate();
+    let calls = 0;
+    const work = async () => {
+      calls += 1;
+    };
+
+    await Promise.all([once("op_1", work), once("op_1", work)]);
+    await once("op_1", work);
+
+    expect(calls).toBe(1);
+  });
+
+  it("retries after a failure", async () => {
+    const once = createIdempotencyGate();
+    let calls = 0;
+    const work = async () => {
+      calls += 1;
+      if (calls === 1) {
+        throw new Error("nope");
+      }
+    };
+
+    await expect(once("op_1", work)).rejects.toThrow("nope");
+    await once("op_1", work);
+    expect(calls).toBe(2);
+  });
+});