docs: update data freshness date to April 2026 (#2)

* Add design spec and gitignore

Initial project spec for iceberg-roulette: Svelte+Vite single-page site
with roulette wheel engine picker and typed compatibility data model.

* Update spec: remove cloud provider, add DuckLake catalog

* docs: add implementation plan

* feat: scaffold Vite + Svelte + TypeScript project

* fix: use vitest/config defineConfig for correct test types, commit lockfile

* feat: add data types and skeleton compatibility data

* test: add compatibility data quality and known-fact assertions

* feat: add full Iceberg catalog compatibility data

* fix: correct catalog support levels based on Notion empirical matrix

* feat: add Wheel SVG component with spin animation and manual selection

* fix: reorder spin callback state updates; add aria-live, aria-pressed, aria-label

* feat: add CatalogResults component with expandable limitations

* fix: reset expanded state on engine change; fix Space key handler; fix aria roles

* feat: wire App.svelte with two-column layout and full data flow

* fix: remove redundant on:select handlers; drop gap:0 no-op; add noreferrer

* ci: add GitHub Actions deploy to GitHub Pages

* docs: update data freshness date to April 2026

Author: b-per

README.md

@@ -29,7 +29,7 @@ Pick a write engine and a read engine (or spin the roulette wheels). The app sho
 | Unity Catalog | Databricks Unity Catalog Iceberg REST |
 | DuckLake | DuckDB-native catalog backed by a DuckDB file |
 
-> Data reflects best-effort knowledge as of mid-2025. Verify against official docs before going to prod.
+> Data last verified against official documentation in April 2026. Verify against official docs before going to prod.
 
 ## Local development