Bootstrap the library at version 2.0.0-snapshot.X.

.github/workflows/build.yml

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+name: Build and Test
+
+on: push
+
+jobs:
+  build-and-test:
+    name: Build and Test
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v6
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build validation package
+        run: npm run build
+
+      - name: Run tests
+        run: npm test
+
+      - name: Build example
+        run: npm run example

.github/workflows/publish.yml

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+name: Publish to NPM
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  publish:
+    name: Publish Package to NPM
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read      # Read repository code
+      id-token: write     # Generate OIDC token for npm authentication
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: 20.x
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build validation package
+        run: npm run build --workspace=@spine-event-engine/validation-ts
+        # This runs: buf generate → patch → tsc (via prepublishOnly)
+
+      - name: Publish to npm with provenance
+        run: npm publish --workspace=@spine-event-engine/validation-ts --provenance --access public

.gitignore

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+# Dependencies
+node_modules/
+
+# Build output
+dist/
+*.tsbuildinfo
+
+# Generated code (Protobuf)
+src/generated/
+tests/generated/
+
+# Test coverage
+coverage/
+*.lcov
+.nyc_output/
+
+# IDE and editors
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# OS files
+Thumbs.db
+.AppleDouble
+.LSOverride
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+pnpm-debug.log*
+
+# Temporary files
+*.tmp
+.cache/
+.temp/
+
+# Environment and local config
+.env
+.env.local
+.env.*.local
+.claude/settings.local.json
+
+# Package manager lock files (libraries should not commit lock files)
+package-lock.json
+yarn.lock
+pnpm-lock.yaml