Fix completed runs not appearing in list + add purge-failed endpoint

- Update save_run_cache to also update actor_id, recipe, inputs on conflict
- Add logging for actor_id when saving runs to run_cache
- Add admin endpoint DELETE /runs/admin/purge-failed to delete all failed runs

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/templates/runs/detail.html

@@ -24,6 +24,9 @@
         {% if run.cached %}
         <span class="bg-purple-900 text-purple-300 px-3 py-1 rounded text-sm">Cached</span>
         {% endif %}
+        {% if run.error %}
+        <span class="text-red-400 text-sm ml-2">{{ run.error }}</span>
+        {% endif %}
         <div class="flex-grow"></div>
         <button hx-post="/runs/{{ run.run_id }}/publish"
                 hx-target="#share-result"
@@ -50,7 +53,11 @@
         <div class="bg-gray-800 rounded-lg p-4">
             <div class="text-gray-500 text-sm">Steps</div>
             <div class="text-white font-medium">
-                {{ run.executed or 0 }} / {{ run.total_steps or (plan.steps|length if plan and plan.steps else '?') }}
+                {% if run.recipe == 'streaming' %}
+                    {% if run.status == 'completed' %}1 / 1{% else %}0 / 1{% endif %}
+                {% else %}
+                    {{ run.executed or 0 }} / {{ run.total_steps or (plan.steps|length if plan and plan.steps else '?') }}
+                {% endif %}
                 {% if run.cached_steps %}
                 <span class="text-purple-400 text-sm">({{ run.cached_steps }} cached)</span>
                 {% endif %}