Phase 4.1. Handle / u64 keys dominate the hot maps (block_defn,
hatch / image / mesh caches, draw-depth map, viewport wire caches);
the default SipHash is wasted work on integer keys. Alias the std
types to rustc_hash::FxHashMap / FxHashSet crate-wide so every map and
set — including the cross-module draw-depth map shared between scene
and the GPU pipelines — uses the faster hasher consistently.
Mechanical: no behavioural change. Constructors moved from ::new() to
::default() (Fx variants carry no RandomState). Build + 13 tests green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* helpers::wcs_to_ucs — UCS inverse transform with zero call sites.
* scene::Scene::compute_and_set_world_offset — never called; the load
path uses the free function `compute_world_offset` directly.
* tessellate::tessellate_mesh — never called; mesh tessellation goes
through `solid3d_tess`, not the truck Shell/Solid path.
* truck_tess::tess_to_mesh_model — orphaned with tessellate_mesh's
removal.
* MeshModel::WHITE / MeshModel::SELECTED — only used by the removed
tessellate_mesh.
* xattach::Step::FilePath variant — never constructed; XATTACH always
enters through `with_path` after the file picker. Replaced the Step
enum + prefilled_path field with flat `path` / `block_name` fields
and dropped the unreachable text-input flow.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- src/io/plot_style.rs: PlotStyleTable and PlotStyleEntry data structures;
CTB reader (deflate/zlib decompressed text format) with ACI→RGB and
ACI→lineweight lookup; CTB writer (zlib compressed); LW_TABLE constant
- src/io/pdf_export.rs: accept optional PlotStyleTable; apply ACI color
and lineweight overrides during PDF rendering
- src/scene/wire_model.rs: add `aci: u8` field to carry ACI index
- src/scene/render.rs: render_style() now returns ACI alongside RGBA
- src/scene/mod.rs + tessellate.rs: propagate aci through wire building
- app: PlotStyleLoad/Loaded/Clear messages and handlers;
PLOTSTYLE LOAD | CLEAR | STATUS command; active_plot_style state on H7CAD
- flate2 added as dependency
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
