feat(analytics): POST /api/v1/analytics/selfstat ingest endpoint

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_analytics_selfstat.py

@@ -0,0 +1,33 @@
+"""自报计数上报端点测试。"""
+from __future__ import annotations
+
+from fastapi.testclient import TestClient
+
+
+def _payload(**over) -> dict:
+    base = {
+        "device_id": "dev-1", "epoch_id": "ep-1", "sent_at": 1700000000000,
+        "app_ver": "0.2.12(62)", "oem": "ColorOS", "os": "Android 14",
+        "batches_attempted": 10, "batches_ok": 9, "batches_fail": 1,
+        "retries": 1, "queue_depth": 2,
+        "events": [
+            {"event": "video_play", "attempted": 100, "drop_capture": 1,
+             "delivered": 95, "drop_undelivered": 2},
+        ],
+    }
+    base.update(over)
+    return base
+
+
+def test_selfstat_ingest_ok(client: TestClient) -> None:
+    r = client.post("/api/v1/analytics/selfstat", json=_payload())
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["ok"] is True
+    assert isinstance(body["snapshot_id"], int)
+
+
+def test_selfstat_ingest_empty_events(client: TestClient) -> None:
+    r = client.post("/api/v1/analytics/selfstat", json=_payload(events=[]))
+    assert r.status_code == 200, r.text
+    assert r.json()["ok"] is True