Clarify completed repair handoff

backend/app/services/snapshot.py

@@ -558,6 +558,7 @@ def _build_repair_activity(
         )
         state = "complete" if jellyfin_found else "indexing"
         download_step_state = "complete"
+        download_step_detail = f"{collector} reports the replacement file as collected and imported."
         available_step_state = "complete" if jellyfin_found else "active"
     elif download_visible and download_state in {"downloading", "paused", "completed", "error", "missing"}:
         state = {
@@ -584,6 +585,9 @@ def _build_repair_activity(
         download_step_state = "active" if download_state == "downloading" else (
             "complete" if download_state == "completed" else "attention"
         )
+        download_step_detail = str(
+            download.get("summary") or "Magent found the replacement download in qBittorrent."
+        )
         available_step_state = "waiting"
     else:
         state = "searching"
@@ -593,6 +597,7 @@ def _build_repair_activity(
             "has been selected yet. Magent will keep checking."
         )
         download_step_state = "waiting"
+        download_step_detail = "Waiting for a suitable release to be selected."
         available_step_state = "waiting"
 
     return {
@@ -615,11 +620,7 @@ def _build_repair_activity(
                 "id": "download",
                 "label": "Replacement download",
                 "state": download_step_state,
-                "detail": (
-                    str(download.get("summary") or "Waiting for a suitable replacement release.")
-                    if download_step_state != "waiting"
-                    else "Waiting for a suitable release to be selected."
-                ),
+                "detail": download_step_detail,
             },
             {
                 "id": "available",