Add password-based registration + login alongside existing magic links.
New /register and updated /login with tabs (password default, magic link
as alternative). Bun.password.hash/verify for bcrypt. Auto-login on
register. Landing page CTAs point to /register.
Add projects.artist field for grouping projects by artist in sidebar.
Sidebar shows collapsible artist sections (▸ Anna Berger) with project
counts, "Ohne Zuordnung" for ungrouped projects. Search filters across
artist names. New/edit project forms include artist field.
Fix timezone bug: set postgres connection timezone to UTC so magic link
expiry works correctly in CEST and other non-UTC timezones.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
09e47d8800