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/recipes/detail.html

@@ -50,6 +50,17 @@
         </div>
     </div>
 
+    {% if recipe.type == 'streaming' %}
+    <!-- Streaming Recipe Info -->
+    <div class="bg-gray-800 rounded-lg border border-gray-700 mb-6 p-4">
+        <div class="flex items-center space-x-2 mb-2">
+            <span class="bg-purple-900 text-purple-300 px-2 py-1 rounded text-sm">Streaming Recipe</span>
+        </div>
+        <p class="text-gray-400 text-sm">
+            This recipe uses frame-by-frame streaming rendering. The pipeline is defined as an S-expression that generates frames dynamically.
+        </p>
+    </div>
+    {% else %}
     <!-- DAG Visualization -->
     <div class="bg-gray-800 rounded-lg border border-gray-700 mb-6">
         <div class="border-b border-gray-700 px-4 py-2 flex items-center justify-between">
@@ -99,11 +110,16 @@
         </div>
         {% endfor %}
     </div>
+    {% endif %}
 
-    <!-- YAML Source -->
-    <h2 class="text-lg font-semibold mb-4">Source</h2>
+    <!-- Source Code -->
+    <h2 class="text-lg font-semibold mb-4">Recipe (S-expression)</h2>
     <div class="bg-gray-900 rounded-lg p-4 border border-gray-700">
-        <pre class="text-sm text-gray-300 overflow-x-auto whitespace-pre-wrap">{{ recipe.yaml }}</pre>
+        {% if recipe.sexp %}
+        <pre class="text-sm font-mono text-gray-300 overflow-x-auto whitespace-pre-wrap">{{ recipe.sexp }}</pre>
+        {% else %}
+        <p class="text-gray-500">No source available</p>
+        {% endif %}
     </div>
 
     <!-- Actions -->