with changelog and first release

CHANGELOG.md

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+# Changelog
+
+## [unreleased]
+
+### Changed
+- update `README.md` with release download URLs and pinned-version install examples.
+
+## 0.0.1 [2026-06-25]
+
+### Added
+- Three.js-based DFG 3D Viewer library (`dfg_3dviewer.min.js`) with CSS, Draco, IFC WASM, and font assets.
+- Rollup build targets: `build:library`, `build:dev`, `build:prod`, `build:test`.
+- `npm run pack:library` to produce `dfg-3dviewer-library.zip` for `web/libraries/dfg-3dviewer/` on Drupal.
+- Playwright E2E tests and local dev server (`npm run dev:test`).
+- Tauri desktop app wrapper (`src-tauri/`).
+- standalone HTML embed (`embed.html`).
+
+### Changed
+- stop tracking `dist/` in git; build output is produced locally.
+- remove GitHub Actions release-build workflow; library zip is built with `npm run pack:library`.
+
+### Fixed
+- fix CI workflow configuration.
+- fix asset path resolving in the library build.