fix(portal): resolve 10+ sec link delay by fixing Garage S3 secret key, adding 1s boto3 timeouts, and running S3 list calls in parallel

portal/main.py

@@ -11,6 +11,7 @@ Every page renders against the design tokens in static/tokens.css.
 """
 from __future__ import annotations
 
+import asyncio
 import logging
 from datetime import datetime, timezone
 from zoneinfo import ZoneInfo
@@ -206,11 +207,13 @@ async def tool_embed(request: Request, tool_id: str) -> HTMLResponse:
         return templates.TemplateResponse(
             request, "not_found.html", {"user": user}, status_code=404
         )
-    # Workspace files: the user's bucket + the shared pool (does not block the
-    # event loop, degrades to empty list on any S3 error).
+    # Workspace files: the user's bucket + the shared pool (runs concurrently,
+    # degraded gracefully on any S3 error/timeout).
     user_bucket = s3_bucket_name(user.username)
-    my_files = await run_in_threadpool(list_recent, user_bucket, 20)
-    shared_files = await run_in_threadpool(list_recent, "shared-media", 20)
+    my_files, shared_files = await asyncio.gather(
+        run_in_threadpool(list_recent, user_bucket, 20),
+        run_in_threadpool(list_recent, "shared-media", 20),
+    )
     ctx = {
         "user": user,
         "tool": tool,