feat: resource consumption rate display in village panel

Village panel now shows daily consumption rates alongside stockpiles (e.g. Food: 15 (-2/d), Wood: 7 (-1/d)). Rates are computed over a rolling 200-tick (~1 day) window by summing item_consumed economic events. The rate display only appears when non-zero, keeping the panel clean until actual consumption occurs. Closes the feedback loop: events show individual transfers, rates show aggregate trends.

simulation/SimulationManager.gd

@@ -590,6 +590,28 @@ func get_current_speed() -> String:
 	return "%.2fx" % SPEED_LEVELS[speed_index]
 
 
+func get_resource_rates() -> Dictionary:
+	var food_consumed := 0.0
+	var wood_consumed := 0.0
+	var recent_ticks := maxi(tick_count - 200, 0)
+	for event in economic_events:
+		if int(event.data["tick"]) < recent_ticks:
+			continue
+		if String(event.data["event_type"]) != "item_consumed":
+			continue
+		if float(event.data["amount"]) <= 0.0:
+			continue
+		if String(event.data["item_id"]) == "food":
+			food_consumed += float(event.data["amount"])
+		elif String(event.data["item_id"]) == "wood":
+			wood_consumed += float(event.data["amount"])
+	var elapsed := maxi(tick_count - recent_ticks, 1)
+	return {
+		"food_per_day": food_consumed / elapsed * 200.0,
+		"wood_per_day": wood_consumed / elapsed * 200.0
+	}
+
+
 func _initialize_storage() -> void:
 	if not storage_states.has(SimulationIds.STORAGE_VILLAGE_PANTRY):
 		storage_states[SimulationIds.STORAGE_VILLAGE_PANTRY] = (StorageStateRecord.create(