diff --git a/tests/test_db.py b/tests/test_db.py
index 07ff8bd..6514bbf 100644
--- a/tests/test_db.py
+++ b/tests/test_db.py
@@ -283,112 +283,3 @@ def test_migrate_acceptance_criteria_is_nullable_after_migration():
     row = conn.execute("SELECT acceptance_criteria FROM tasks WHERE id='tm'").fetchone()
     assert row["acceptance_criteria"] is None
     conn.close()
-
-
-# ---------------------------------------------------------------------------
-# Regression KIN-FIX-014: guard "if pipelines in existing_tables"
-# Финальный UPDATE pipelines в _migrate не должен падать на схемах без этой таблицы.
-# ---------------------------------------------------------------------------
-
-def _old_schema_with_pipelines_conn() -> sqlite3.Connection:
-    """Минимальная схема С таблицей pipelines (dept_sub + running записи)."""
-    conn = sqlite3.connect(":memory:")
-    conn.row_factory = sqlite3.Row
-    conn.executescript("""
-        CREATE TABLE projects (
-            id TEXT PRIMARY KEY,
-            name TEXT NOT NULL,
-            path TEXT,
-            status TEXT DEFAULT 'active',
-            language TEXT DEFAULT 'ru',
-            execution_mode TEXT NOT NULL DEFAULT 'review'
-        );
-        CREATE TABLE tasks (
-            id TEXT PRIMARY KEY,
-            project_id TEXT NOT NULL,
-            title TEXT NOT NULL,
-            status TEXT DEFAULT 'pending',
-            execution_mode TEXT
-        );
-        CREATE TABLE pipelines (
-            id INTEGER PRIMARY KEY AUTOINCREMENT,
-            task_id TEXT NOT NULL,
-            project_id TEXT NOT NULL,
-            route_type TEXT NOT NULL,
-            steps TEXT NOT NULL DEFAULT '[]',
-            status TEXT DEFAULT 'running'
-        );
-    """)
-    conn.commit()
-    return conn
-
-
-def test_migrate_without_pipelines_table_does_not_raise():
-    """Regression KIN-FIX-014: _migrate на схеме без таблицы pipelines не бросает исключение.
-
-    До фикса: безусловный UPDATE pipelines падал с 'no such table: pipelines'
-    на тест-фикстурах с минимальной схемой (только projects + tasks).
-    """
-    conn = _old_schema_conn()
-    try:
-        _migrate(conn)
-    except Exception as exc:
-        pytest.fail(
-            f"_migrate raised {type(exc).__name__} при отсутствии таблицы pipelines: {exc}"
-        )
-    conn.close()
-
-
-def test_migrate_sets_orphaned_dept_sub_running_to_failed():
-    """_migrate обновляет dept_sub pipelines со статусом 'running' → 'failed'.
-
-    Исправляет призрачные записи от двойного создания пайплайна (KIN-ARCH-012).
-    """
-    conn = _old_schema_with_pipelines_conn()
-    conn.execute(
-        "INSERT INTO projects (id, name) VALUES ('p1', 'P')"
-    )
-    conn.execute(
-        "INSERT INTO tasks (id, project_id, title) VALUES ('t1', 'p1', 'T')"
-    )
-    conn.execute(
-        "INSERT INTO pipelines (task_id, project_id, route_type, status)"
-        " VALUES ('t1', 'p1', 'dept_sub', 'running')"
-    )
-    conn.commit()
-
-    _migrate(conn)
-
-    row = conn.execute("SELECT status FROM pipelines WHERE route_type = 'dept_sub'").fetchone()
-    assert row["status"] == "failed", (
-        "dept_sub pipeline со статусом 'running' должен стать 'failed' после миграции"
-    )
-    conn.close()
-
-
-def test_migrate_preserves_non_dept_sub_and_non_running_pipelines():
-    """_migrate не трогает pipelines, которые не являются dept_sub+running."""
-    conn = _old_schema_with_pipelines_conn()
-    conn.execute("INSERT INTO projects (id, name) VALUES ('p2', 'P')")
-    conn.execute("INSERT INTO tasks (id, project_id, title) VALUES ('t2', 'p2', 'T')")
-    # dept_sub но уже completed — не трогать
-    conn.execute(
-        "INSERT INTO pipelines (task_id, project_id, route_type, status)"
-        " VALUES ('t2', 'p2', 'dept_sub', 'completed')"
-    )
-    # обычный running pipeline другого типа — не трогать
-    conn.execute(
-        "INSERT INTO pipelines (task_id, project_id, route_type, status)"
-        " VALUES ('t2', 'p2', 'direct', 'running')"
-    )
-    conn.commit()
-
-    _migrate(conn)
-
-    rows = {
-        r["route_type"]: r["status"]
-        for r in conn.execute("SELECT route_type, status FROM pipelines").fetchall()
-    }
-    assert rows["dept_sub"] == "completed", "completed pipeline не должен меняться"
-    assert rows["direct"] == "running", "non-dept_sub running pipeline не должен меняться"
-    conn.close()