diff --git a/CLAUDE.md b/CLAUDE.md
index 9959f3b..dbcfa7f 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -560,7 +560,8 @@ phase1_projects_roles → phase6_features → phase7_mobile_api → phase8_notif
                         → phase18_issue_reported_by
                             → phase19_issue_mobile_photos
                                 → phase20_inspector_assignments
-                                    → phase21_performance_indexes   ← HEAD
+                                    → phase21_template_active
+                                        → phase21_performance_indexes   ← HEAD
 ```
 
 ### phase21_performance_indexes
@@ -573,6 +574,10 @@ flask db upgrade
 sudo systemctl restart gunicorn
 ```
 
+### phase21_template_active
+
+Adds `active` boolean column to `inspection_templates` so templates can be deactivated without deletion. Inactive templates are hidden from the inspection-start form but remain accessible in the template management UI. Uses `INFORMATION_SCHEMA` column existence check — safe to re-run.
+
 ### phase19_issue_mobile_photos
 
 Adds `mobile_photo_paths JSON NULL` to `issues` table. Stores extra evidence photos submitted from the iPad at issue-creation time, separate from `result_photos` (resolution photos) so they appear under "Photo Evidence" on the web. Uses `INFORMATION_SCHEMA` existence check — safe to re-run.
diff --git a/migrations/versions/phase21_performance_indexes.py b/migrations/versions/phase21_performance_indexes.py
index c6de309..1831f76 100644
--- a/migrations/versions/phase21_performance_indexes.py
+++ b/migrations/versions/phase21_performance_indexes.py
@@ -25,7 +25,7 @@ import sqlalchemy as sa
 from alembic import op
 
 revision      = 'phase21_performance_indexes'
-down_revision = 'phase20_inspector_assignments'
+down_revision = 'phase21_template_active'
 branch_labels = None
 depends_on    = None