feat(server): ingest v2事件级归属+session_resume+stay区间并集重算+响应明细契约

Co-Authored-By: Claude Code <noreply@anthropic.com>

server/tracker/tests/test_collect.py

@@ -24,7 +24,11 @@ def _body(n=1, sid="s1", vid="v1"):
 def test_collect_ok_creates_events(db, client):
     Site.objects.create(name="s", domains=["www.a.com"], site_id="site_x")
     r = _post(client, _body(2))
-    assert r.status_code == 200 and r.json() == {"code": 200, "data": {"accepted": 2, "duplicated": 0}, "message": "ok"}
+    assert r.status_code == 200
+    body = r.json()   # 包含式断言：v2 响应新增 rejected/request_id/server_time 字段
+    assert body["code"] == 200 and body["message"] == "ok"
+    assert body["data"]["accepted"] == 2 and body["data"]["duplicated"] == 0
+    assert body["data"]["rejected"] == [] and body["data"]["request_id"]
     assert r["Access-Control-Allow-Origin"] == "https://www.a.com"
 
 def test_origin_not_whitelisted_rejected(db, client):
@@ -97,3 +101,27 @@ def test_malformed_content_length_400_not_500(db, client):
     Site.objects.create(name="s", domains=["www.a.com"], site_id="site_x")
     r = _post(client, _body(1), extra={"CONTENT_LENGTH": "abc"})
     assert r.status_code == 400 and r.json()["message"] == "payload_too_large"
+
+
+# ---- 响应契约（阶段A Task3）----
+
+def test_response_contract_rejected_details(db, client):
+    """部分拒绝批：rejected 明细（index/event_id/reason）回传——HTTP 200 不再隐含全量成功。"""
+    Site.objects.create(name="s", domains=["www.a.com"], site_id="site_x")
+    b = _body(2)
+    b["events"][0]["event_name"] = "bad_name"
+    r = _post(client, b)
+    assert r.status_code == 200
+    data = r.json()["data"]
+    assert data["accepted"] == 1 and data["duplicated"] == 0
+    assert data["rejected"] == [{"index": 0, "event_id": "e0",
+                                 "reason": "event_name_not_allowed"}]
+
+def test_request_id_in_response_and_raw_batch(db, client):
+    """request_id（uuid4 hex 32）随响应回传，且与 RawBatch.request_id 同值落库（对账）。"""
+    from tracker.models import RawBatch
+    Site.objects.create(name="s", domains=["www.a.com"], site_id="site_x")
+    r = _post(client, _body(1))
+    rid = r.json()["data"]["request_id"]
+    assert isinstance(rid, str) and len(rid) == 32
+    assert RawBatch.objects.get().request_id == rid