feat(oss): port v3 pipeline with hybrid search, entity extraction, and additive scoring (#4805)

Co-authored-by: Soumil Rathi <soumilrathi@gmail.com>
Co-authored-by: Saket Aryan <saketaryan2002@gmail.com>
Co-authored-by: chaithanyak42 <chaithanya.kumar42a@gmail.com>
Co-authored-by: kartik-mem0 <kartik.labhshetwar@mem0.ai>

mem0-ts/src/oss/tests/memory.init.test.ts

@@ -16,26 +16,25 @@ jest.mock("../src/llms/google", () => ({
   GoogleLLM: jest.fn(),
 }));
 
-// ─── Content-based LLM mock (reviewer #9) ────────────────
-// Returns facts for system-prompt calls, memory actions for user-only calls.
+// ─── Content-based LLM mock (V3 additive extraction pipeline) ─────────
 jest.mock("../src/llms/openai", () => ({
   OpenAILLM: jest.fn().mockImplementation(() => ({
     generateResponse: jest
       .fn()
       .mockImplementation(
         (messages: Array<{ role: string; content: string }>) => {
-          const hasSystemRole = messages.some((m) => m.role === "system");
-          if (hasSystemRole) {
-            return JSON.stringify({ facts: ["test fact"] });
-          }
+          const userMsg = messages.find((m) => m.role === "user");
+          const content = userMsg?.content ?? "";
+          const newMsgMatch = content.match(
+            /## New Messages\n([\s\S]*?)(?=\n##|$)/,
+          );
+          const extracted = newMsgMatch ? newMsgMatch[1].trim() : "test fact";
           return JSON.stringify({
             memory: [
               {
-                id: "new",
-                event: "ADD",
-                text: "test fact",
-                old_memory: "",
-                new_memory: "test fact",
+                id: "0",
+                text: extracted,
+                attributed_to: "user",
               },
             ],
           });
@@ -44,9 +43,15 @@ jest.mock("../src/llms/openai", () => ({
   })),
 }));
 
+const mockEmbedding = new Array(1536).fill(0.1);
 jest.mock("../src/embeddings/openai", () => ({
   OpenAIEmbedder: jest.fn().mockImplementation(() => ({
-    embed: jest.fn().mockResolvedValue(new Array(1536).fill(0.1)),
+    embed: jest.fn().mockResolvedValue(mockEmbedding),
+    embedBatch: jest
+      .fn()
+      .mockImplementation((texts: string[]) =>
+        Promise.resolve(texts.map(() => mockEmbedding)),
+      ),
     embeddingDims: 1536,
   })),
 }));
@@ -114,12 +119,16 @@ describe("Memory - reset()", () => {
     const userId = `reset_test_${Date.now()}`;
 
     await mem.add("Remember this fact", { userId });
-    const before: SearchResult = await mem.getAll({ userId });
+    const before: SearchResult = await mem.getAll({
+      filters: { user_id: userId },
+    });
     expect(before.results.length).toBeGreaterThan(0);
 
     await mem.reset();
 
-    const after: SearchResult = await mem.getAll({ userId });
+    const after: SearchResult = await mem.getAll({
+      filters: { user_id: userId },
+    });
     expect(after.results).toHaveLength(0);
   });
 });