dev-loop-dx-p2.md

@objectstack/objectql	patch
@objectstack/metadata	patch
@objectstack/runtime	patch
@objectstack/plugin-auth	patch
@objectstack/cli	patch

Dev-loop DX fixes from the 15.1 third-party evaluation (P2 batch):

• Hot-added objects are now queryable without a restart. Adding a *.object.ts under os dev used to recompile "green" while every query answered no such table (or not registered) until a manual restart: the artifact reload never notified the ObjectQL registry, tables were only created at boot, and seeds only loaded from the boot-time bundle. The metadata:reloaded payload now carries the parsed artifact; ObjectQL ingests the object definitions and re-runs the idempotent schema sync (same skipSchemaSync opt-out as boot), and the runtime loads seeds for first-seen objects (dev, single-tenant). os dev also prints ✚ new object(s): … on recompile.
• Dev admin credentials stay visible. The os dev startup banner only showed admin@objectos.ai / admin123 on the boot that actually seeded it; with the persistent default DB every later boot hid it, and the Console login page never knew it existed. The hint now re-arms on every dev boot for as long as the account still verifies against the default password, and GET /api/v1/auth/config exposes a dev-gated devSeedAdmin field (never present outside NODE_ENV=development) so the login page can show it.
• os doctor reference analysis understands current metadata shapes. Objects bound through defineView containers (list/listViews/form/formViews → data.object, subform childObject, lookup form fields) and app navigation (objectName, nested children, areas) were reported as "defined but not referenced". The collector now walks the canonical shapes (plus flow node config.object/objectName) and the orphan-view check descends into containers.