step 3: nodes repository + CRUD + CLI node commands
- types.go: TypeSpace/Case/Folder/Note/... + Slugify()
- node.go: Node struct, Meta, IsDeleted/IsRoot helpers
- repository.go: full CRUD (Create, Get, GetActive, ListChildren,
ListRoots, UpdateTitle, Move, SoftDelete) + Meta KV (MetaSet,
MetaGet, MetaList)
- node_cmd.go: thin wrappers around repository
- main.go: verstak node create/list/get/move/delete subcommands
- repository_test.go: 12 tests covering all CRUD paths
Acceptance: go build pass, go test pass (12 tests),
CLI create+list+get+move+delete all working.