feat: expand companion platform, device controls, and memoir workflows

Add customer and operator login, BLE provisioning, device fleet controls, call memory, memoir generation, and refreshed family and maintenance portals. Include API contracts, migrations, firmware sources, tests, assets, and deployment documentation.

migrations/000062_operator_phone_login.down.sql

@@ -0,0 +1,6 @@
+BEGIN;
+DROP TABLE operator_account_session;
+DROP TABLE operator_sms_challenge;
+DROP TABLE operator_phone_credential;
+DROP TABLE operator_login_session;
+COMMIT;