Request tree: spreadsheet-style table with D&D, linking, import
- Add sort_order column to entries (migration 002)
- Upgrade migration runner to handle directory of SQL files
- Add TypeSection, SortOrder field, RequestListData, SectionData types
- Add tree API: ListRequestTree, MoveEntry, AnswerLink CRUD, ListAnswers
- Rewrite ImportRequests to create hierarchical tree (request_list → section → request)
- Rewrite project page Requests tab as spreadsheet-style tree table
- Collapsible request lists and sections
- Auto-numbering (1, 1.1, 1.2, 2.1.1)
- Drag & drop reordering between sections
- Priority/status badges with color coding
- Attach answer modal (link existing docs or upload new)
- Per-row actions menu
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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