- frontend-spec.md: rewrite CreateItemPane spec for dynamic form
rendering from form descriptor, replace CategoryPicker three-column
spec with multi-stage domain/subcategory picker, replace useCategories
hook with useFormDescriptor, update form sections to dynamic field
groups, mark hierarchical categories as implemented, remove
sourcing_link/standard_cost from item-level DB columns, update types
and implementation order
- SPECIFICATION.md: rename /api/schemas/{name}/properties endpoint to
/api/schemas/{name}/form
- Mark Phase 4 (remove Go templates) as complete
- Update architecture: SPA serves at / via NotFound handler
- Update overview to past tense (migration is done)
- Update file/line counts (~40 files, ~7,600 lines)
- Mark backend changes 1-3 and 5 as implemented
- Reorganize remaining work section
Closes#30