Nicholai e19a331c64 Refactor Hubert chat input and improve message persistence
- Create dedicated HubertInput component with reliable auto-resize
- Save all messages automatically to D1 database
- Add visitor name saving via model tool call
- Add migration for visitor name column
- Fix conversation creation in new-visitor endpoint

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-18 04:53:55 -07:00
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