fix(core): fixed character tracking issues

lib/wanderer_app/map.ex

@@ -134,12 +134,21 @@ defmodule WandererApp.Map do
   def get_options(map_id),
     do: {:ok, map_id |> get_map!() |> Map.get(:options, Map.new())}
 
-  def get_character_ids(map_id),
-    do:
-      {:ok,
-       map_id
-       |> get_map!()
-       |> Map.get(:characters, [])}
+  def get_tracked_character_ids(map_id) do
+    {:ok,
+     map_id
+     |> get_map!()
+     |> Map.get(:characters, [])
+     |> Enum.filter(fn character_id ->
+       {:ok, tracking_start_time} =
+         WandererApp.Cache.lookup(
+           "character:#{character_id}:map:#{map_id}:tracking_start_time",
+           nil
+         )
+
+       not is_nil(tracking_start_time)
+     end)}
+  end
 
   @doc """
   Returns a full list of characters in the map
@@ -233,7 +242,7 @@ defmodule WandererApp.Map do
         :ok
 
       _ ->
-        {:error, :already_exists}
+        :ok
     end
   end
 

lib/wanderer_app/map/server/map_server_characters_impl.ex

@@ -214,9 +214,9 @@ defmodule WandererApp.Map.Server.CharactersImpl do
     start_time = System.monotonic_time(:microsecond)
 
     try do
-      {:ok, active_character_ids} = WandererApp.Map.get_character_ids(map_id)
+      {:ok, tracked_character_ids} = WandererApp.Map.get_tracked_character_ids(map_id)
 
-      character_count = length(active_character_ids)
+      character_count = length(tracked_character_ids)
 
       # Emit telemetry for tracking update cycle start
       :telemetry.execute(
@@ -229,7 +229,7 @@ defmodule WandererApp.Map.Server.CharactersImpl do
       max_concurrency = calculate_max_concurrency(character_count)
 
       updated_characters =
-        active_character_ids
+        tracked_character_ids
         |> Task.async_stream(
           fn character_id ->
             # Use batch cache operations for all character tracking data