refactor: future-annotations headers for lazy aggregator imports

autolens/aggregator/fit_imaging.py

@@ -14,6 +14,8 @@
   that exposes a generator of ``FitImaging`` objects, enabling memory-efficient iteration
   over large result sets.
 """
+
+from __future__ import annotations
 from typing import Optional, List
 
 import autofit as af

autolens/aggregator/fit_interferometer.py

@@ -15,6 +15,8 @@
   ``Aggregator`` that exposes a generator of ``FitInterferometer`` objects, enabling
   memory-efficient iteration over large result sets.
 """
+
+from __future__ import annotations
 from typing import Optional, List
 
 import autofit as af

autolens/aggregator/subhalo.py

@@ -10,6 +10,8 @@
 for the best-fit model in each cell — both the "with subhalo" fit and (optionally) the
 "no subhalo" baseline — enabling the per-cell log-evidence difference map to be computed.
 """
+
+from __future__ import annotations
 from typing import Optional
 
 import autofit as af