Add core simulation modules for owniverse mechanics

- Introduced `life_evolution.gd` to manage life evolution processes.
- Implemented `manual_production.gd` for handling production mechanics, including resource management and production steps.
- Created `object_batches.gd` to manage batches of objects, including scaling and appending batches.
- Developed `object_ledger.gd` for tracking physical amounts, available resources, and binding ownerships.
- Added `simulation_module.gd` as a base class for simulation modules, providing a weak reference to the world.
- Established `stellar_rules.gd` for managing stellar evolution and destruction mechanics.
- Introduced `universe_environment.gd` to calculate environmental parameters based on the current state of the universe.

tests/test_production_transaction.gd

@@ -17,39 +17,39 @@ func fixture():
     var global: Node = root.get_node("Global")
     for id in global.OwniverseEntities:
         var entity = load("res://world/owniverse/owniverse_entity.gd").new(global.OwniverseEntities[id])
-        world.entities[id] = entity
+        world.catalog.entities[id] = entity
         world.state.amount[id] = 0.0
         world.state.stats.total_amount[id] = 0.0
         if entity.group_as != "":
             world.state.amount[entity.group_as] = 0.0
             world.state.stats.total_amount[entity.group_as] = 0.0
-    world.entities["N"].life_product = {}
-    world.entities["N"].product_per_year_type = "H"
-    world.entities["N"].product_per_year_amount = 10.0
-    world.entities["N"].auto = 0.0
+    world.catalog.entities["N"].life_product = {}
+    world.catalog.entities["N"].product_per_year_type = "H"
+    world.catalog.entities["N"].product_per_year_amount = 10.0
+    world.catalog.entities["N"].auto = 0.0
     world.state.amount.N = 1.0
     return world
 
 func dispose(world) -> void:
-    for entity in world.entities.values():
+    for entity in world.catalog.entities.values():
         entity.free()
     world.free()
 
 func run() -> void:
     var world = fixture()
-    world.initialize_life_batches()
-    world.entities.N.cost = {"H": 2.0}
-    world.entities.N.bind = {"S": 3.0}
+    world.evolution.initialize_life_batches()
+    world.catalog.entities.N.cost = {"H": 2.0}
+    world.catalog.entities.N.bind = {"S": 3.0}
     world.state.amount.H = 10.0
     world.state.amount.S = 0.0
     world.state.auto_resources = {"H": 10.0}
     world.state.batches.H = [{"amount": 10.0, "start_year": 1.0, "end_year": 2.0}]
     var before: Dictionary = world.state.duplicate(true)
-    check(not world._try_production(world.state, world.entities.N, 1.0, true), "Binding failure rejects production")
+    check(not world.production.try_production(world.state, world.catalog.entities.N, 1.0, true), "Binding failure rejects production")
     check(world.state == before, "Failure preserves costs, batches and budget")
     world.state.amount.S = 10.0
     var old_batches: Array = world.state.batches.H
-    check(world._try_production(world.state, world.entities.N, 2.0, true), "Funded production succeeds")
+    check(world.production.try_production(world.state, world.catalog.entities.N, 2.0, true), "Funded production succeeds")
     check(world.state.amount.H == 6.0 and world.state.amount.S == 4.0, "Exact cost and binding")
     check(world.state.auto_resources.H == 6.0, "Exact automatic budget")
     check(old_batches[0].amount == 10.0 and world.state.batches.H[0].amount == 6.0, "Consumed batches isolated")