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/000061_phone_password.down.sql

@@ -0,0 +1,5 @@
+BEGIN;
+ALTER TABLE onboarding_account_session DROP COLUMN phone_verified_at;
+ALTER TABLE onboarding_account_session DROP COLUMN phone_digest;
+DROP TABLE customer_phone_credential;
+COMMIT;