Model is now pure data (categories, cells, formulas, measure_agg) with
no references to view/. The Workbook struct owns the Model together
with views and the active view name, and is responsible for cross-slice
operations (add/remove category → notify views, view management).
- New: src/workbook.rs with Workbook wrapper and cross-slice helpers
(add_category, add_label_category, remove_category, create_view,
switch_view, delete_view, normalize_view_state).
- Model: strip view state and view-touching methods. recompute_formulas
remains on Model as a primitive; the view-derived none_cats list is
gathered at each call site (App::rebuild_layout, persistence::load)
so the view dependency is explicit, not hidden behind a wrapper.
- View: add View::none_cats() helper.
- CmdContext: add workbook and view fields so commands can reach both
slices without threading Model + View through every call.
- App: rename `model` field to `workbook`.
- Persistence (save/load/format_md/parse_md/export_csv): take/return
Workbook so the on-disk format carries model + views together.
- Widgets (GridWidget, TileBar, CategoryContent, ViewContent): take
explicit &Model + &View instead of routing through Model.
Tests updated throughout to reflect the new shape. View-management
tests that previously lived on Model continue to cover the same
behaviour via a build_workbook() helper in model/types.rs. All 573
tests pass; clippy is clean.
This is Phase A of improvise-36h. Phase B will mechanically extract
crates/improvise-core/ containing model/, view/, format.rs, workbook.rs.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Move tests from the monolithic tests.rs into #[cfg(test)] mod tests
blocks in each command module. Shared test helpers live in
mod.rs::test_helpers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Executed-By: fido
