Remove asserts the types already cover

The nil check burn down added guards which turned out redundant once
the surrounding annotations landed. `_has_handlers` is set to true when
the first handler registers, so it is a boolean rather than the literal
false it was inferred as.

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

exp_scenario/module/commands/connect.lua

@@ -41,7 +41,7 @@ local function get_server_id(server)
         elseif status == "Offline" then
             return false, { "exp-commands_connect.offline", server_details.name }
         end
-        return true, server_id
+        return true, server_id --[[@as string]]
     elseif server_count_before > 0 then
         return false, { "exp-commands_connect.wrong-version", concat(server_names_before, ", ") }
     else

exp_scenario/module/commands/reports.lua

@@ -43,11 +43,11 @@ Commands.new("create-report", { "exp-commands_reports.description-create" })
         if Reports.report_player(other_player, player.name, reason) then
             local user_message = { "exp-commands_reports.response", other_player_name, reason }
             local admin_message = { "exp-commands_reports.response-admin", other_player_name, player_name, reason }
-            for _, player in ipairs(game.connected_players) do
-                if player.admin then
-                    player.print(admin_message)
+            for _, connected_player in ipairs(game.connected_players) do
+                if connected_player.admin then
+                    connected_player.print(admin_message)
                 else
-                    player.print(user_message)
+                    connected_player.print(user_message)
                 end
             end
         else

exp_scenario/module/commands/search.lua

@@ -91,7 +91,7 @@ local function sort_results(results, func)
         end
     end
 
-    return sorted
+    return sorted --[[@as SearchResult[] ]]
 end
 
 local display_players_time_format = ExpUtil.format_time_factory_locale{ format = "short", hours = true, minutes = true }