data holders: private tracker of every organisation holding my address, email, phone or IBAN

dataholders schema (orgs + identity) with migration and personal_app grants,
idempotent CSV import (upsert on name+login, never wipes, keeps site edits and
ticks), owner-only /trackers/data-holders with search, filters, pagination,
inline edit/add and a moving checklist per identifier

src/lib/server/owner.ts

@@ -25,6 +25,7 @@ export const ownerOnlyPrefixes = [
 	'/trackers/tasks',
 	'/trackers/groceries',
 	'/trackers/houses',
+	'/trackers/data-holders',
 	'/trackers/books/files',
 	'/lists/db',
 	// Spotify OAuth for the listening tracker (connect + callback 404 for everyone else).
@@ -47,6 +48,7 @@ export const ownerWritePrefixes = [
 	'/trackers/tasks',
 	'/trackers/groceries',
 	'/trackers/houses',
+	'/trackers/data-holders',
 	'/trackers/books',
 	'/trackers/cars',
 	'/trackers/planes',