This commit replaces the legacy item history and AI insights system with a standardized, fuzzy-matched item intel workflow:
- Update AiItemHistoryTrigger component to support both quote and order items via the `collection` prop, replacing the old `insights` prop with `intel`
- Add full `ItemIntel` type definitions to `src/lib/types.ts` for the new standardized insight payload
- Create new REST API endpoints for fetching and computing item intel for `quote_items` and `order_items`
- Rewrite the MCP insight endpoint to use the new shared `item-intel-service` instead of legacy individual insight functions
- Reorder quotes page tabs to place Delivery Note quotes alongside New quotes for better daily operator workflow
- Add item intel triggers to quote process and order process pages
- Remove deprecated document-level `AiInsightsPanel` components from quote and order detail pages
- Add bulk backfill endpoint for populating intel across existing active items
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