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/recall.test.ts

@@ -0,0 +1,50 @@
+import { describe, expect, it } from "vitest";
+import { formatRecallMessages, recallMemories } from "../src/recall.js";
+import { createFakeStore } from "./helpers.js";
+
+describe("formatRecallMessages", () => {
+  it("drops empty memories", () => {
+    expect(
+      formatRecallMessages([
+        { id: "1", memory: " likes tea " },
+        { id: "2", memory: "   " },
+      ]),
+    ).toEqual([{ id: "1", content: "likes tea" }]);
+  });
+});
+
+describe("recallMemories", () => {
+  it("searches inside the locked scope and returns keyed messages", async () => {
+    const store = createFakeStore([{ id: "mem_1", memory: "User likes tea" }]);
+    const result = await recallMemories({
+      store,
+      scopeKey: "scope_abc",
+      query: "What does the user drink?",
+      topK: 5,
+      threshold: 0.1,
+      rerank: false,
+    });
+
+    expect(store.searched).toEqual([
+      { query: "What does the user drink?", userId: "scope_abc" },
+    ]);
+    expect(result).toEqual({
+      messages: [{ id: "mem_1", content: "User likes tea" }],
+    });
+  });
+
+  it("returns null for an empty query", async () => {
+    const store = createFakeStore([{ id: "mem_1", memory: "x" }]);
+    await expect(
+      recallMemories({
+        store,
+        scopeKey: "scope_abc",
+        query: "   ",
+        topK: 5,
+        threshold: 0.1,
+        rerank: false,
+      }),
+    ).resolves.toBeNull();
+    expect(store.searched).toEqual([]);
+  });
+});