fix(eve): scope forget, persist capture idempotency, and fail closed

Review findings: delete was not partitioned by scope.key, capture
replay after restart could double-write, and Mem0 errors were swallowed
as empty recall.

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

integrations/eve/tests/options.test.ts

@@ -4,7 +4,8 @@ import { createFakeStore } from "./helpers.js";
 
 describe("resolveOptions", () => {
   it("applies defaults", () => {
-    expect(resolveOptions({ apiKey: "m0-test" })).toMatchObject({
+    expect(resolveOptions({ apiKey: "m0-test" })).toEqual({
+      apiKey: "m0-test",
       host: "https://api.mem0.ai",
       topK: 5,
       threshold: 0.1,
@@ -12,6 +13,7 @@ describe("resolveOptions", () => {
       infer: true,
       autoSearch: { enabled: true },
       capture: { enabled: true },
+      metadata: {},
     });
   });
 
@@ -19,8 +21,56 @@ describe("resolveOptions", () => {
     expect(() => resolveOptions({ apiKey: "   " })).toThrow(/empty/);
   });
 
+  it("requires an api key when no store is provided", () => {
+    expect(() => resolveOptions({} as never)).toThrow(/apiKey is required/);
+  });
+
+  it("allows a store without an api key", () => {
+    const store = createFakeStore();
+    expect(resolveOptions({ store }).store).toBe(store);
+  });
+
+  it("does not invoke a function api key at resolve time", () => {
+    let calls = 0;
+    const apiKey = () => {
+      calls += 1;
+      return "";
+    };
+    expect(() => resolveOptions({ apiKey })).not.toThrow();
+    expect(calls).toBe(0);
+  });
+
   it("rejects an invalid topK", () => {
     expect(() => resolveOptions({ apiKey: "m0-test", topK: 0 })).toThrow(/topK/);
+    expect(() => resolveOptions({ apiKey: "m0-test", topK: 101 })).toThrow(/topK/);
+    expect(() => resolveOptions({ apiKey: "m0-test", topK: 1.5 })).toThrow(/topK/);
+  });
+
+  it("rejects an invalid threshold", () => {
+    expect(() => resolveOptions({ apiKey: "m0-test", threshold: -0.1 })).toThrow(
+      /threshold/,
+    );
+    expect(() => resolveOptions({ apiKey: "m0-test", threshold: 1.1 })).toThrow(
+      /threshold/,
+    );
+    expect(() => resolveOptions({ apiKey: "m0-test", threshold: Number.NaN })).toThrow(
+      /threshold/,
+    );
+  });
+
+  it("rejects a non-http host", () => {
+    expect(() => resolveOptions({ apiKey: "m0-test", host: "localhost" })).toThrow(
+      /host/,
+    );
+    expect(() => resolveOptions({ apiKey: "m0-test", host: "ftp://mem0.ai" })).toThrow(
+      /host/,
+    );
+  });
+
+  it("treats a blank host as the default", () => {
+    expect(resolveOptions({ apiKey: "m0-test", host: "   " }).host).toBe(
+      "https://api.mem0.ai",
+    );
   });
 
   it("keeps an injected store", () => {