runner code refactor, frontend papercuts

lib/elixir_ai/chat_runner/liveview_session.ex

@@ -0,0 +1,34 @@
+defmodule ElixirAi.ChatRunner.LiveviewSession do
+  require Logger
+
+  def handle_call(:get_liveview_pids, _from, state) do
+    {:reply, Map.keys(state.liveview_pids), state}
+  end
+
+  def handle_call({:register_liveview_pid, liveview_pid}, _from, state) do
+    ref = Process.monitor(liveview_pid)
+    {:reply, :ok, %{state | liveview_pids: Map.put(state.liveview_pids, liveview_pid, ref)}}
+  end
+
+  def handle_call({:deregister_liveview_pid, liveview_pid}, _from, state) do
+    case Map.pop(state.liveview_pids, liveview_pid) do
+      {nil, _} ->
+        {:reply, :ok, state}
+
+      {ref, new_pids} ->
+        Process.demonitor(ref, [:flush])
+        {:reply, :ok, %{state | liveview_pids: new_pids}}
+    end
+  end
+
+  def handle_down(ref, pid, _reason, state) do
+    case Map.get(state.liveview_pids, pid) do
+      ^ref ->
+        Logger.info("ChatRunner #{state.name}: LiveView #{inspect(pid)} disconnected")
+        {:noreply, %{state | liveview_pids: Map.delete(state.liveview_pids, pid)}}
+
+      _ ->
+        {:noreply, state}
+    end
+  end
+end