Add spiral-db integration to Contacts as the third app using
pixel-based spiral visualization. Contacts are encoded with
name, company, city, and email/phone flags.
Changes:
- Add createContactSchema() to spiral-db with bool fields for
hasEmail/hasPhone and nullable company/city
- Create Svelte 5 spiral store with importContacts from contactsStore
- Add SpiralCanvas component and /spiral route
- Wire up navigation (Ctrl+5) with auto-import on mount
- Favorites show as starred entries with gold border
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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