chore: add PyPI/pub.dev workflows and CHANGELOG for v3.0.0

- Add release-pypi.yml workflow (builds .NET DLLs, publishes to PyPI)
- Update release-pub.yml (automated pub.dev publish with service account key)
- Create CHANGELOG.md with full version history

Secrets needed before tagging v3.0.0:
- PYPI_API_TOKEN for PyPI publishing
- GOOGLE_SERVICE_ACCOUNT_KEY for pub.dev publishing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: dannyhaak

.github/workflows/release-pub.yml

@@ -4,6 +4,10 @@ on:
   push:
     tags: ["v*"]
 
+# OIDC token for pub.dev authentication (no secrets needed)
+permissions:
+  id-token: write
+
 jobs:
   publish:
     runs-on: ubuntu-latest
@@ -13,15 +17,25 @@ jobs:
       - name: Setup Flutter
         uses: subosito/flutter-action@v2
         with:
-          flutter-version: "3.24.0"
+          channel: stable
+
+      - name: Set version from tag
+        run: |
+          VERSION="${GITHUB_REF_NAME#v}"
+          cd sdk/flutter/tag_data_translation
+          sed -i "s/^version: .*/version: ${VERSION}/" pubspec.yaml
 
       - name: Get dependencies
         run: cd sdk/flutter/tag_data_translation && flutter pub get
 
       - name: Analyze
         run: cd sdk/flutter/tag_data_translation && flutter analyze
 
-      # TODO: Add pub.dev publishing
-      # Requires: GOOGLE_SERVICE_ACCOUNT_KEY secret for pub.dev authentication
-      # - name: Publish to pub.dev
-      #   run: cd sdk/flutter/tag_data_translation && flutter pub publish --force
+      # Uses dart-lang/setup-dart's reusable workflow for OIDC-based publishing.
+      # Requires: enable "publishing from GitHub Actions" on pub.dev package admin
+      # with repository dannyhaak/TagDataTranslation and tag pattern v{{version}}.
+      - name: Setup Dart
+        uses: dart-lang/setup-dart@v1
+
+      - name: Publish to pub.dev
+        run: cd sdk/flutter/tag_data_translation && dart pub publish --force

.github/workflows/release-pypi.yml

@@ -0,0 +1,43 @@
+name: Release PyPI
+
+on:
+  push:
+    tags: ["v*"]
+
+permissions:
+  contents: read
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 10.0.x
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Set version from tag
+        run: |
+          VERSION="${GITHUB_REF_NAME#v}"
+          sed -i "s/^version = .*/version = \"${VERSION}\"/" pip/pyproject.toml
+
+      - name: Build .NET DLLs for pip package
+        run: python pip/scripts/build.py
+
+      - name: Build pip package
+        run: |
+          pip install build
+          cd pip && python -m build
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          password: ${{ secrets.PYPI_API_TOKEN }}
+          packages-dir: pip/dist/

CHANGELOG.md

@@ -0,0 +1,71 @@
+# Changelog
+
+All notable changes to TagDataTranslation will be documented in this file.
+
+## [3.0.0] - 2026-02-25
+
+### Added
+- **Cross-platform SDKs**: npm (WASM), Python (pythonnet), Swift (NativeAOT), Android (NativeAOT), Flutter (dart:ffi)
+- .NET MAUI target frameworks: Android, iOS, macCatalyst
+- `LoadErrors` property for debugging scheme loading failures
+- `InternalsVisibleTo` for test project access
+- Performance benchmarks project (BenchmarkDotNet)
+- Python example app
+- Node.js example app
+- PyPI publish workflow
+- pub.dev publish workflow
+
+### Changed
+- License changed to Business Source License 1.1 (BSL 1.1)
+- Performance optimizations: regex caching, grammar token caching, pre-sorted fields/rules, BinaryConverter lookup tables
+- README updated with all platform availability and benchmark results
+
+### Fixed
+- WASM build error (missing `using System`, `SupportedOSPlatform` attribute)
+- Android managed publish pipeline (DLLs not copied to output directory)
+- Android native build script (NDK lld linker auto-detection)
+- Nullable warnings in Android and WASM wrappers
+- npm release workflow using .NET 8.0 instead of 10.0
+
+## [2.3.0]
+
+### Added
+- TDS 2.3 support with 12 new '++' schemes for custom hostname encoding in Digital Link URIs
+- SGTIN++, SSCC++, SGLN++, GRAI++, GIAI++, GSRN++, GSRNP++, GDTI++, SGCN++, ITIP++, CPI++, DSGTIN++
+- Hostname encoding with Code 40 and 7-bit ASCII optimization tables
+- Variable-length alphanumeric encoding (Section 14.5.6)
+
+## [2.1.0]
+
+### Added
+- `TryTranslate` and `TryTranslateDetails` for exception-free high-throughput translation
+
+## [2.0.1]
+
+### Changed
+- Multi-targeting support for .NET 8.0, 9.0, and 10.0
+
+## [2.0.0]
+
+### Added
+- TDT 2.2 with JSON-based scheme definitions
+- GS1 Digital Link URI generation and parsing
+- New schemes: DSGTIN+, GDTI-113, and more
+- GS1 Company Prefix lookup
+- Filter Value tables
+
+### Changed
+- Scheme definitions migrated from XML to JSON
+
+## [1.1.5]
+
+### Fixed
+- Updated GCP prefix file
+- ITIP encoding fixes
+
+## [1.0.0]
+
+### Added
+- Initial release with TDT 1.6/1.11 support
+- Core translation engine
+- SGTIN-96, SSCC-96, SGLN, GRAI, GIAI, GSRN, GDTI, SGCN schemes