Record L2 share when publishing runs from UI

When ui_publish_run publishes a run to L2, now properly records the
share in the local database so the UI can display the L2 badge and
published status.

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

server.py

@@ -3623,9 +3623,20 @@ async def ui_publish_run(run_id: str, request: Request, output_name: str = Form(
         resp.raise_for_status()
         result = resp.json()
 
-        # Pin the output
+        # Pin the output and record L2 share
         if run.output_hash:
             await database.update_item_metadata(run.output_hash, ctx.actor_id, pinned=True, pin_reason="published")
+            # Record L2 share so UI shows published status
+            cache_path = get_cache_path(run.output_hash)
+            media_type = detect_media_type(cache_path) if cache_path else "image"
+            content_type = "video" if media_type == "video" else "image"
+            await database.save_l2_share(
+                content_hash=run.output_hash,
+                actor_id=ctx.actor_id,
+                l2_server=l2_server,
+                asset_name=result["asset"]["name"],
+                content_type=content_type
+            )
 
         # Pin the inputs (for provenance)
         for input_hash in run.inputs: