- Add ErrCannotRenameMainVariant; ProjectService.Update now returns
this error if the caller tries to change the Variant of a main
project (empty Variant) — ensures there is always exactly one main
- Handle ErrCannotRenameMainVariant in PUT /api/projects/:uuid with 400
- Set document.title dynamically from breadcrumb data:
- Configurator: "CODE / variant / Config name — QuoteForge"
- Project detail: "CODE / variant — QuoteForge"
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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