fix(insights): add info logging to AI network insight worker

Info-level logs for: org count at start, observation count per org,
successful persistence, and dedup. Makes the worker observable without
needing database access.

lib/towerops/workers/ai_network_insight_worker.ex

@@ -37,6 +37,8 @@ defmodule Towerops.Workers.AiNetworkInsightWorker do
       |> select([o], o.id)
       |> Repo.all()
 
+    Logger.info("AI network insight: processing #{length(org_ids)} orgs")
+
     Enum.each(org_ids, &process_organization/1)
 
     :ok
@@ -50,6 +52,10 @@ defmodule Towerops.Workers.AiNetworkInsightWorker do
       {:ok, %{content: content, model: model} = response} ->
         {:ok, observations} = NetworkInsightPrompt.parse(content)
 
+        Logger.info(
+          "AI network insight: org #{organization_id} got #{length(observations)} observations, #{Map.get(response, :completion_tokens) || 0} tokens"
+        )
+
         Enum.each(observations, &persist_observation(organization_id, &1, model))
 
         record_usage(organization_id, response, model)
@@ -89,7 +95,11 @@ defmodule Towerops.Workers.AiNetworkInsightWorker do
     }
 
     case Insights.insert_insight_if_new(attrs) do
-      {:ok, _} ->
+      {:ok, :duplicate} ->
+        :ok
+
+      {:ok, insight} ->
+        Logger.info("AI network insight: persisted #{insight.id} — \"#{obs.title}\"")
         :ok
 
       {:error, changeset} ->