Clear the last of the nil checks

Guards now cover the statements that follow them, and a couple of reads
are restructured so the narrowing survives.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

exp_scenario/module/control/spawn_area.lua

@@ -149,11 +149,13 @@ local function create_entities(surface, offset)
         local pos = apply_offset({ entity_details[2], entity_details[3] }, offset)
         local entity = surface.create_entity{ name = entity_details[1], position = pos, force = "neutral" }
 
-        if entity and config.entities.protected then
-            protect_entity(entity)
-        end
+        if entity then
+            if config.entities.protected then
+                protect_entity(entity)
+            end
 
-        entity.operable = config.entities.operable
+            entity.operable = config.entities.operable
+        end
     end
 end
 
@@ -276,7 +278,8 @@ local function on_player_created(event)
     if config.resource_patches.enabled then create_resource_patches(surface, offset) end
     if config.turrets.enabled then update_turrets() end
 
-    (player.force --[[@as LuaForce]]).set_spawn_position(offset, surface)
+    local force = player.force --[[@as LuaForce]]
+    force.set_spawn_position(offset, surface)
     player.teleport(offset, surface)
 end
 

exp_scenario/module/gui/player_list.lua

@@ -106,7 +106,7 @@ Elements.reason_confirm = Gui.define("player_list/reason_confirm")
             if reason == nil or not reason:find("%S") then reason = "no reason given" end
             button_data.reason_callback(player, reason)
         end
-        element.parent.entry.text = ""
+        assert(assert(element.parent).entry).text = ""
         Elements.container.set_selected_player(player, nil)
         Elements.player_table.refresh_player(player)
     end) --[[@as any]]

exp_scenario/module/gui/science_production.lua

@@ -193,7 +193,8 @@ Elements.science_table = Gui.define("science_production/science_table")
         local science_table = Gui.elements.scroll_table(parent, 190, 4)
         local no_production_label = Elements.no_production_label(science_table)
         Elements.no_production_label.refresh(no_production_label)
-        (science_table.style --[[@as LuaStyle]]).column_alignments[3] = "right"
+        local science_table_style = science_table.style --[[@as LuaStyle]]
+        science_table_style.column_alignments[3] = "right"
         return science_table
     end) 
     :element_data{} --[[@as any]]
@@ -280,7 +281,8 @@ function Elements.science_table.add_row(science_table, row_data)
         column_count = 2,
     }
     delta_table.style.padding = 0
-    (delta_table.style --[[@as LuaStyle]]).column_alignments[1] = "right"
+    local delta_table_style = delta_table.style --[[@as LuaStyle]]
+    delta_table_style.column_alignments[1] = "right"
 
     -- Draw the net production label
     local net = Elements.production_label(science_table, row_data.net)
@@ -429,8 +431,10 @@ do local _display_data = {} --- @type table<string, Elements.eta_label.display_d
         -- Update the eta labels
         for player, eta_label in Elements.eta_label:online_elements() do
             local display_data = _display_data[player.force.name]
-            eta_label.caption = display_data.caption
-            eta_label.tooltip = display_data.tooltip
+            if display_data then
+                eta_label.caption = display_data.caption
+                eta_label.tooltip = display_data.tooltip
+            end
         end
     end
 end