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/capture.test.ts

@@ -8,8 +8,9 @@ describe("captureCompletedTurn", () => {
     const captured = await captureCompletedTurn({
       store,
       scopeKey: "scope_abc",
-      infer: true,
-      metadata: { source: "eve" },
+      operationId: "op_1",
+      infer: false,
+      metadata: { source: "eve", operation_id: "op_1" },
       turnInput: [{ role: "user", content: "I am vegetarian" }],
       messages: [
         { role: "user", content: "I am vegetarian" },
@@ -21,6 +22,8 @@ describe("captureCompletedTurn", () => {
     expect(store.added).toEqual([
       {
         userId: "scope_abc",
+        infer: false,
+        metadata: { source: "eve", operation_id: "op_1" },
         messages: [
           { role: "user", content: "I am vegetarian" },
           { role: "assistant", content: "Got it." },
@@ -34,12 +37,38 @@ describe("captureCompletedTurn", () => {
     const captured = await captureCompletedTurn({
       store,
       scopeKey: "scope_abc",
+      operationId: "op_1",
       infer: true,
-      metadata: {},
+      metadata: { operation_id: "op_1" },
       turnInput: [],
       messages: [],
     });
     expect(captured).toBe(false);
     expect(store.added).toEqual([]);
   });
+
+  it("skips add when the operation id was already captured", async () => {
+    const store = createFakeStore([
+      {
+        id: "mem_existing",
+        memory: "already stored",
+        metadata: { operation_id: "op_replay" },
+      },
+    ]);
+    const captured = await captureCompletedTurn({
+      store,
+      scopeKey: "scope_abc",
+      operationId: "op_replay",
+      infer: true,
+      metadata: { operation_id: "op_replay" },
+      turnInput: [{ role: "user", content: "I am vegetarian" }],
+      messages: [
+        { role: "user", content: "I am vegetarian" },
+        { role: "assistant", content: "Got it." },
+      ],
+    });
+
+    expect(captured).toBe(false);
+    expect(store.added).toEqual([]);
+  });
 });