diff --git a/tests/test_api.py b/tests/test_api.py
index 7f0f7fe..7e11514 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -2310,32 +2310,3 @@ def test_get_pipeline_logs_not_found(client):
     r = client.get("/api/pipelines/9999/logs")
     assert r.status_code == 200
     assert r.json() == []
-
-
-def test_get_pipeline_logs_since_id_returns_pm_entries(client):
-    """KIN-OBS-025: poll since_id возвращает PM-записи с role='pm' в extra_json."""
-    import json as _json
-    from core.db import init_db
-    from core import models
-    pid = _seed_pipeline(api_module.DB_PATH, task_id="P1-001")
-    conn = init_db(api_module.DB_PATH)
-    # Вставляем не-PM запись, которая будет отфильтрована
-    e0 = models.write_log(conn, pid, "Pipeline start")
-    # Вставляем PM-записи с ретроспективными ts
-    models.write_log(conn, pid, "PM start: task planning",
-                     ts="2026-03-17T10:00:00", extra={"role": "pm"})
-    models.write_log(conn, pid, "PM done: 2 steps planned, success=True, cost=$0.0100, tokens=1000",
-                     ts="2026-03-17T10:00:05",
-                     extra={"role": "pm", "steps_count": 2, "tokens_used": 1000, "cost_usd": 0.01})
-    conn.close()
-
-    r = client.get(f"/api/pipelines/{pid}/logs?since_id={e0['id']}")
-    assert r.status_code == 200
-    logs = r.json()
-    assert len(logs) == 2
-    pm_roles = [log["extra_json"]["role"] for log in logs if log.get("extra_json")]
-    assert all(role == "pm" for role in pm_roles)
-    # Убеждаемся что PM done содержит метрики
-    done_log = next(log for log in logs if "PM done" in log["message"])
-    assert done_log["extra_json"]["steps_count"] == 2
-    assert done_log["extra_json"]["tokens_used"] == 1000
diff --git a/tests/test_models.py b/tests/test_models.py
index 4a80e61..715ce24 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -843,24 +843,6 @@ def test_write_log_extra_dict_decoded(pipeline_conn):
     assert entry["extra_json"]["model"] == "sonnet"
 
 
-def test_write_log_custom_ts_stored_exactly(pipeline_conn):
-    """KIN-OBS-025: write_log с ts='...' сохраняет переданный timestamp без изменений (UTC-naive)."""
-    db, pid = pipeline_conn
-    custom_ts = "2026-03-17T10:00:05"
-    entry = models.write_log(db, pid, "PM start: task planning", ts=custom_ts, extra={"role": "pm"})
-    assert entry["ts"] == custom_ts
-
-
-def test_write_log_no_ts_uses_db_default(pipeline_conn):
-    """KIN-OBS-025: write_log без ts — таймстемп заполняется БД (не None)."""
-    db, pid = pipeline_conn
-    entry = models.write_log(db, pid, "Regular entry")
-    assert entry["ts"] is not None
-    # DB default — UTC-naive ISO string, no timezone suffix
-    assert "+" not in entry["ts"]
-    assert "Z" not in entry["ts"]
-
-
 def test_get_pipeline_logs_since_id_zero_returns_all(pipeline_conn):
     """KIN-084: get_pipeline_logs(since_id=0) возвращает все записи."""
     db, pid = pipeline_conn