nordisk/facett

facett-warehousedeck — crate card

Reverse-engineered (from source — verify, don't trust the name)

• One-line pitch: A multi-pane dashboard over a lakehouse warehouse — a wall of N panes, each binding one table (or join) to a view-kind (3D graph / grid / chart / blob), all visible at once.
• Does: WarehouseDeck (itself a Facet) composes existing facett widgets inside a facett_core::FacetDeck, rendered in Wall mode (wall_ui, several Graph3D at once) or Focus mode (tabbed ui). Engine-agnostic: takes Arrow frames + view-models (PaneData), never a catalog — a host reads its Iceberg tables and maps rows in. WarehouseRegistry maps table name → ViewKind (default_nordisk() presets); GraphSpec/ChartSpec describe panes; add/add_for mount them. state_json exposes pane_count, per-kind counts, and each pane's nodes/edges/rows/series.
• Key deps: facett-core (FacetDeck, Facet), and the composed widgets: facett-graph3d, facett-grid, facett-table, facett-stat, facett-plot, facett-syschart; egui, serde_json; arrow stack (arrow-array/schema/select 58).
• Shape: lib, single module (~628 lines). Key types: ViewKind, PaneData, GraphSpec, ChartSpec, WarehouseRegistry, DeckLayout, WarehouseDeck.
• Observed role in the workspace: The composition dashboard (the "Warehouse Deck" referenced in demo prep); a host like nornir's viz feeds warehouse tables in. Never reimplements a viewer — pure composition. No iceberg/skade/nornir dep.

Fill in (one line each — only the human knows these)

• Primary consumer(s):
• Why it exists (vs the obvious alternative):
• Hard constraint (airgap / no-C-deps / no-FFI / pure-Rust / etc.):
• Release cadence & independence (rides a parent? own repo someday?):
• Status (production / prototype / experimental / stubbed):
• Must-NOT-change invariant:
• Biggest known gap or TODO:
• Anything a newcomer would get wrong about it: