fix(tests): the notes table has 27 columns — deleted_batch_id is the second deliberate exclusion (#3165)

The pin test caught its own inaccuracy on the first run, which is what it is
for. `deleted_batch_id` comes from SoftDeleteMixin alongside `deleted_at` and
is excluded for the same reason: trashed rows are not exported, so neither is
the batch id that groups them for restore(). The nine-field gap #3182 tracks
is unchanged.

src/scribe/services/backup.py

@@ -52,7 +52,7 @@ logger = logging.getLogger(__name__)
 # (milestone 297): the WHY a project inherits what it does, and its opt-outs.
 # v11 (2026-08) added the note verification trio — notes.verify_with /
 # expires_when / verified_at (milestone 317). NOT an audit of the notes
-# section: it carries 16 of the 26 `notes` columns, and #3182 tracks the nine that
+# section: it carries 16 of the 27 `notes` columns, and #3182 tracks the nine that
 # have been missing since long before this.
 # Bump when the serialized schema changes.
 BACKUP_VERSION = 11
@@ -296,7 +296,7 @@ def _milestone_rows(rows) -> list[dict]:
 
 def _note_rows(rows) -> list[dict]:
     # INCOMPLETE, and knowingly so — see #3182. This carries 16 of the
-    # `notes` table's 26 columns. `note_type`, `task_kind`, `arose_from_id`, `data`,
+    # `notes` table's 27 columns. `note_type`, `task_kind`, `arose_from_id`, `data`,
     # `description`, `recurrence_rule`, `recurrence_next_spawn_at`,
     # `started_at` and `completed_at` are all absent, so a restore flattens
     # every snippet and process into a plain note and every issue and spike

tests/test_services_backup.py

@@ -67,7 +67,7 @@ def test_a_never_checked_note_exports_a_null_stamp_and_restores_as_one():
 
 
 def test_the_note_section_gap_is_pinned_rather_than_silent():
-    """#3182. `_note_rows` carries 16 of the `notes` table's 26 columns, and the
+    """#3182. `_note_rows` carries 16 of the `notes` table's 27 columns, and the
     absences are not harmless: without `note_type` every snippet and process
     restores as a plain note, and without `task_kind` every issue and spike
     restores as `work`.
@@ -86,8 +86,9 @@ def test_the_note_section_gap_is_pinned_rather_than_silent():
     missing = {c.name for c in Note.__table__.columns} - carried
 
     assert missing == {
-        # Deliberate: trashed rows are not exported.
-        "deleted_at",
+        # Deliberate: trashed rows are not exported, so neither is the batch
+        # id that groups them for restore().
+        "deleted_at", "deleted_batch_id",
         # NOT deliberate — the #3182 gap, in the order they hurt.
         "note_type",       # snippets and processes flatten into notes
         "task_kind",       # issues and spikes flatten into work