feat: profession-based staggered daily schedules

ProfessionDefinition gains schedule_offset (-0.12 to +0.12 fraction of day). ActionSelectionSystem shifts each NPC's effective time_of_day by their profession offset before determining sleep/meal/work periods. Farmers wake earliest (-0.04h = ~2:38am), woodcutters slightly early (-0.02h), guards slightly late (+0.02h), scholars latest (+0.05h = ~5:45am). Wanderers have no offset. The village now has naturally staggered rhythms instead of everyone doing the same thing at the same time.

simulation/actions/ActionSelectionSystem.gd

@@ -47,7 +47,10 @@ func select_action(npc: SimNPC, village: SimVillage, time_of_day: float = 0.5, a
 			SimulationIds.ACTION_GATHER_FOOD, -1.0, "Critically hungry; must find food"
 		)
 
-	var period := _get_period(time_of_day)
+	var profession_def := SimulationDefinitions.get_profession(npc.profession)
+	var offset: float = profession_def.schedule_offset if profession_def != null else 0.0
+	var local_time := fmod(time_of_day + offset + 1.0, 1.0)
+	var period := _get_period(local_time)
 
 	if period == SchedulePeriod.SLEEP:
 		if npc.energy < 60.0:

simulation/definitions/ProfessionDefinition.gd

@@ -5,6 +5,7 @@ extends Resource
 @export var display_name: String
 @export var visual_color := Color.WHITE
 @export var prop_color := Color(0.35, 0.25, 0.15, 1.0)
+@export_range(-0.12, 0.12, 0.005) var schedule_offset := 0.0
 
 
 func validate() -> Array[String]:

simulation/definitions/professions/farmer.tres

@@ -8,3 +8,4 @@ profession_id = &"farmer"
 display_name = "Farmer"
 visual_color = Color(0.36, 0.62, 0.28, 1)
 prop_color = Color(0.65, 0.45, 0.2, 1)
+schedule_offset = -0.04

simulation/definitions/professions/guard.tres

@@ -8,3 +8,4 @@ profession_id = &"guard"
 display_name = "Guard"
 visual_color = Color(0.25, 0.42, 0.68, 1)
 prop_color = Color(0.72, 0.75, 0.78, 1)
+schedule_offset = 0.02

simulation/definitions/professions/scholar.tres

@@ -8,3 +8,4 @@ profession_id = &"scholar"
 display_name = "Scholar"
 visual_color = Color(0.52, 0.34, 0.68, 1)
 prop_color = Color(0.78, 0.66, 0.28, 1)
+schedule_offset = 0.05

simulation/definitions/professions/woodcutter.tres

@@ -8,3 +8,4 @@ profession_id = &"woodcutter"
 display_name = "Woodcutter"
 visual_color = Color(0.67, 0.34, 0.2, 1)
 prop_color = Color(0.34, 0.22, 0.14, 1)
+schedule_offset = -0.02