Type the last of the forward declarations

Locals declared ahead of an assignment inside a callback were inferred
as nil at every use site.

The role event handlers are given a class so the table is not unified
with the other module handler tables.

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

exp_scenario/module/control/deconstruction_log.lua

@@ -137,7 +137,9 @@ local function on_player_ammo_inventory_changed(event)
     if not player or not player.character then return end
 
     local character_ammo = assert(player.get_inventory(defines.inventory.character_ammo))
-    local item = character_ammo[player.character.selected_gun_index]
+    local gun_index = player.character.selected_gun_index
+    --- @cast gun_index uint
+    local item = character_ammo[gun_index]
     if not item or not item.valid or not item.valid_for_read then
         return
     end

exp_scenario/module/gui/player_list.lua

@@ -102,7 +102,7 @@ Elements.reason_confirm = Gui.define("player_list/reason_confirm")
         local action_name = Elements.container.get_selected_action(player)
         local button_data = action_name and config.buttons[action_name]
         if button_data and button_data.reason_callback then
-            local reason = element.parent.entry.text
+            local reason = assert(assert(element.parent).entry).text --[[@as string?]]
             if reason == nil or not reason:find("%S") then reason = "no reason given" end
             button_data.reason_callback(player, reason)
         end