feat(sender): add manual source rescan action

Add an authenticated action to queue a source rescan from the sent
Webmentions overview.

Extract the reusable confirmation modal and its JavaScript so received
and sent admin actions share the same implementation.

1 files changed, 7 insertions, 2 deletions

diff --git a/webmentions_ssg/tasks/scanner.py b/webmentions_ssg/tasks/scanner.py
index f80e5f4..ff75697 100644
--- a/webmentions_ssg/tasks/scanner.py
+++ b/webmentions_ssg/tasks/scanner.py
@@ -1,6 +1,6 @@
 from collections.abc import Iterator
 from dataclasses import dataclass
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 from fnmatch import fnmatchcase
 from itertools import chain
 from pathlib import Path
@@ -327,7 +327,7 @@ def scan_sources() -> None:
 
     seen_paths: set[str] = set()
     scanned_count = 0
-    scan_time = datetime.now(timezone.utc)
+    scan_time = datetime.now(UTC)
 
     for index_path in root.rglob("index.html"):
         relative_path = index_path.relative_to(root)
@@ -395,3 +395,8 @@ def scan_sources() -> None:
         scanned_count,
         pending_count,
     )
+
+
+@huey.task()
+def manual_scan_sources() -> None:
+    return scan_sources()