- Delete Settings::BankSyncController and its views (the providers page is
now a strict superset of what bank_sync offered)
- Add permanent 301 redirect: GET /settings/bank_sync → /settings/providers
- Collapse nav to a single "Bank Sync" entry pointing at /settings/providers;
remove the duplicate admin-only "Providers" entry from the Advanced section
- Remove "Providers" from SETTINGS_ORDER; point "Bank Sync" at
settings_providers_path for next/prev navigation
- Rename page title to "Bank Sync"; replace admin-credential lede with
user-facing copy ("Connect external accounts…")
- Update breadcrumb: Home → Bank sync
- Add controller test asserting 301 status and Location header
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>