Refactor civilization evolution and state management

- Enhanced the `civilization_evolution.gd` script to improve population handling and resource allocation during civilization transitions.
- Introduced new functions in `civilization_state.gd` for profile normalization and merging, ensuring consistent population representation across stages.
- Updated `evolution_coordinator.gd` to incorporate budget phases for better tracking of simulation performance.
- Improved `frame_budget.gd` to monitor maximum slice durations and phases during processing.
- Added a new benchmarking tool in `android_benchmark.gd` to measure performance metrics during simulation runs, including frame processing times and throughput.
- Created associated scene and resource files for the benchmarking tool to facilitate testing and performance evaluation.

tests/test_civilization_evolution.gd

@@ -42,18 +42,17 @@ func seed_population(world, id: String, count: Variant, time: Variant = 1.0) ->
     world.state.batches[id] = [{"amount": count, "start_year": time, "end_year": time}]
     world.evolution.initialize_life_batches()
 
-func sum_ethics(world, id: String) -> Variant:
-    var result: Variant = 0
-    for n in world.state.ethics.get(id, {}).values(): result = E.add(result, n)
-    return result
-
 func invariants(world) -> void:
     var physical: Dictionary = world.ledger.physical_amounts(world.state)
     for id in world.state.ethics:
-        check(E.eq(sum_ethics(world, id), physical.get(id, 0)), E.add("Ethics equal physical population for ", id))
+        var total: float = 0.0
         for n in world.state.ethics[id].values():
-            if (E.lt(n, 0) or E.ne(n, E.floor_value(n))): check(false, "Invalid ethic amount")
-    check(E.eq(root.get_node("SaveManager").validate_data({"format_version": 5, "app_version": "", "ui": {"current_page": 0}, "state": world.state}), ""), "Civilization state validates")
+            var share: float = 0.0 + n
+            if not is_finite(share) or share < 0.0 or share > 1.0: check(false, "Invalid ethic share")
+            total += share
+        check(absf(total - 1.0) < 0.000001, E.add("Ethic shares sum to one for ", id))
+        check(E.ge(physical.get(id, 0), 0), E.add("Exact physical population remains available for ", id))
+    check(E.eq(root.get_node("SaveManager").validate_data({"format_version": 6, "app_version": "", "ui": {"current_page": 0}, "state": world.state}), ""), "Civilization state validates")
 
 func run() -> void:
     var global: Node = root.get_node("Global")