Backend:
- Migration 004: add 'section' column to nodes table
(NULL=inbox, values: clients/projects/recipes/documents/archive)
- Create(parentID, type, title, section) — section stored on root nodes
- ListRoots(includeDeleted, section) — filters by section
(section='inbox' returns nodes with NULL section)
- GET /api/nodes?section=X filters root nodes by section
- POST /api/nodes accepts 'section' field in body
Frontend:
- Sidebar separates 'НАВИГАЦИЯ' (virtual sections) from 'ДЕЛА' (real nodes)
- Each section loads only its own nodes: GET /api/nodes?section=clients etc.
- Creating from a section sets the section automatically
- Inbox shows only nodes with no section
- selectBySearch(id) closes result dropdown after selection
- All types shown in Russian (Дело, Заметка, Папка, etc.)
Acceptance: go build pass, go test pass (all packages),
manual: Pro projects section shows only project-nodes,
clients only client-nodes, inbox only unsectioned nodes.
mirivlad