diff --git a/backend/src/main/resources/db/migration/V59__seed_blog_write.sql b/backend/src/main/resources/db/migration/V59__seed_blog_write.sql
new file mode 100644
index 00000000..b653072a
--- /dev/null
+++ b/backend/src/main/resources/db/migration/V59__seed_blog_write.sql
@@ -0,0 +1,16 @@
+-- Grant BLOG_WRITE to every existing group that already holds WRITE_ALL.
+-- Without this, the Geschichten feature ships dark to production: no group
+-- has BLOG_WRITE, so the editor controls are invisible and "+ Neue Geschichte"
+-- is never rendered. The natural mapping is "groups that can already write
+-- documents and tags can also author family stories." Admins can revoke or
+-- re-assign via the group editor afterwards.
+
+INSERT INTO group_permissions (group_id, permission)
+SELECT DISTINCT gp.group_id, 'BLOG_WRITE'
+FROM group_permissions gp
+WHERE gp.permission = 'WRITE_ALL'
+  AND NOT EXISTS (
+      SELECT 1 FROM group_permissions existing
+      WHERE existing.group_id = gp.group_id
+        AND existing.permission = 'BLOG_WRITE'
+  );