v0.6.0 — Collection import, household onboarding, and scaling

New

• Collection import: Upload a CSV, map the columns, match rows against the Cratewise catalog, review unmatched or ambiguous items in a queue, and complete the import into your collection.
• Admin: view any household with audit log: Support staff can open a household’s collection for support. All access is logged.
• Auto-create household on Google sign-in: Signing in with Google for the first time now creates your household automatically, without a separate setup step.
• Collection import (upload and preview): The import flow includes file upload, parsing, column mapping, and a preview before anything is written.

Fixed

• A connection-ceiling issue identified under load has been resolved; the instance count and database connection pool are now sized to handle the load without hitting the ceiling.