Implement npm release flow based on SDK reference

.github/workflows/ci.yml

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+name: CI
+
+# Disabled until generated src/index.ts is synced with src/sdk.ts exports
+# on:
+#   pull_request:
+#     branches: [main]
+#   push:
+#     branches: [main]
+on: workflow_dispatch
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+      - run: bun install
+      - run: bun run type-check
+      - run: bun run build

.github/workflows/release.yml

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+name: Release
+
+# Disabled until generated src/index.ts is synced with src/sdk.ts exports
+# on:
+#   push:
+#     branches: [main]
+#     paths:
+#       - 'src/**'
+#       - 'package.json'
+#       - 'tsconfig.json'
+on: workflow_dispatch
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Check if version is already published
+        id: version-check
+        run: |
+          LOCAL_VERSION=$(node -p "require('./package.json').version")
+          PKG_NAME=$(node -p "require('./package.json').name")
+          PUBLISHED_VERSION=$(npm view "${PKG_NAME}" version 2>/dev/null || echo "0.0.0")
+          echo "local=${LOCAL_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "published=${PUBLISHED_VERSION}" >> "$GITHUB_OUTPUT"
+          if [ "${LOCAL_VERSION}" = "${PUBLISHED_VERSION}" ]; then
+            echo "skip=true" >> "$GITHUB_OUTPUT"
+            echo "Version ${LOCAL_VERSION} is already published — skipping."
+          else
+            echo "skip=false" >> "$GITHUB_OUTPUT"
+            echo "Publishing ${PKG_NAME}@${LOCAL_VERSION} (current: ${PUBLISHED_VERSION})"
+          fi
+
+      - run: bun install
+        if: steps.version-check.outputs.skip == 'false'
+
+      - run: bun run type-check
+        if: steps.version-check.outputs.skip == 'false'
+
+      - run: bun run build
+        if: steps.version-check.outputs.skip == 'false'
+
+      - run: npm publish --provenance --access public
+        if: steps.version-check.outputs.skip == 'false'
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.gitignore

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+node_modules/
+dist/
+*.tgz
+.env
+.DS_Store

.npmrc

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+registry=https://registry.npmjs.org/