feat(profile): add profile settings and LLM user context

backend/tests/test_skincare.py

@@ -128,3 +128,33 @@ def test_delete_snapshot(client):
 def test_delete_snapshot_not_found(client):
     r = client.delete(f"/skincare/{uuid.uuid4()}")
     assert r.status_code == 404
+
+
+def test_analyze_photos_includes_user_profile_context(client, monkeypatch):
+    from innercontext.api import skincare as skincare_api
+
+    captured: dict[str, object] = {}
+
+    class _FakeResponse:
+        text = "{}"
+
+    def _fake_call_gemini(**kwargs):
+        captured.update(kwargs)
+        return _FakeResponse()
+
+    monkeypatch.setattr(skincare_api, "call_gemini", _fake_call_gemini)
+
+    profile = client.patch(
+        "/profile", json={"birth_date": "1991-02-10", "sex_at_birth": "female"}
+    )
+    assert profile.status_code == 200
+
+    r = client.post(
+        "/skincare/analyze-photos",
+        files={"photos": ("face.jpg", b"fake-bytes", "image/jpeg")},
+    )
+    assert r.status_code == 200
+
+    parts = captured["contents"]
+    assert isinstance(parts, list)
+    assert any("USER PROFILE:" in str(part) for part in parts)