Release Unicode Tools 0.1.0

public/SOURCE.md

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+# Corresponding source
+
+The corresponding source for Unicode Tools 0.1.0 is available at:
+
+https://git.add-ideas.de/lotobo/unicode-tools/src/tag/v0.1.0
+
+Build with Node.js 22, npm 11, `npm ci`, and `npm run release:artifact`.
+The preferred source includes the generated JSON catalog in `public/data/` so
+the application build does not require a network request. To reproduce that
+catalog, run `npm run data:generate`; the generator accepts only the seven
+upstream files whose URLs and SHA-256 values are pinned in
+`scripts/generate-unicode-data.mjs` and `public/data/SOURCES.json`.
+
+The browser app never contacts those upstream URLs. Data downloads occur only
+when a developer explicitly regenerates the source catalog.