chore: new release processes

.github/workflows/prepare-release.yml

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+name: Prepare Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version number (e.g., 3.6.0)'
+        required: true
+        type: string
+      ticket:
+        description: 'Jira ticket number (e.g., 1234 for SDK-1234)'
+        required: true
+        type: string
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  prepare-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/create-github-app-token@v1
+        id: app-token
+        with:
+          app-id: ${{ vars.ITERABLE_SDK_RELEASE_APP_ID }}
+          private-key: ${{ secrets.ITERABLE_SDK_RELEASE_APP_PRIVATE_KEY }}
+
+      - uses: actions/checkout@v4
+        with:
+          ref: master
+          token: ${{ steps.app-token.outputs.token }}
+
+      - name: Validate version format
+        run: |
+          if ! [[ "${{ github.event.inputs.version }}" =~ ^[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9]+)?$ ]]; then
+            echo "::error::Invalid version format. Use semantic versioning (e.g., 3.6.0 or 3.6.0-beta1)"
+            exit 1
+          fi
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Update Changelog
+        id: update_changelog
+        run: |
+          version="${{ github.event.inputs.version }}"
+          changelog_file="CHANGELOG.md"
+
+          # RN has no [Unreleased] section -- insert a new ## version header at the top
+          temp_file=$(mktemp)
+          {
+            echo "## $version"
+            echo ""
+            cat "$changelog_file"
+          } > "$temp_file"
+          mv "$temp_file" "$changelog_file"
+
+          echo "See CHANGELOG.md for release notes." > "$RUNNER_TEMP/release-notes.md"
+
+      - name: Bump package.json version
+        run: npm --no-git-tag-version --allow-same-version version "${{ github.event.inputs.version }}"
+
+      - name: Regenerate build info
+        run: node scripts/autoCreatePackageInfo.js
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@4e1beaa7521e8b457b572c090b25bd3db56bf1c5 # v5
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+          title: "SDK-${{ github.event.inputs.ticket }}: Prepare for Release ${{ github.event.inputs.version }}"
+          body: |
+            # Prepare for Release ${{ github.event.inputs.version }}
+
+            ## SDK Release Checklist
+            - [ ] CHANGELOG.md updated with release notes under the new version header
+            - [ ] Version bumped in package.json
+            - [ ] src/itblBuildInfo.ts regenerated
+            - [ ] README.md reviewed (if needed)
+            - [ ] All tests passing
+            - [ ] Documentation updated (if needed)
+          branch: "release/SDK-${{ github.event.inputs.ticket }}-${{ github.event.inputs.version }}"
+          commit-message: "[SDK-${{ github.event.inputs.ticket }}]: Prepare for release ${{ github.event.inputs.version }}"
+          labels: release
+          delete-branch: true
+
+      - name: Create Draft GitHub Release
+        env:
+          GH_TOKEN: ${{ steps.app-token.outputs.token }}
+        run: |
+          version="${{ github.event.inputs.version }}"
+
+          if gh release view "$version" &>/dev/null; then
+            echo "Draft release $version already exists, skipping."
+          else
+            gh release create "$version" \
+              --draft \
+              --title "$version" \
+              --notes-file "$RUNNER_TEMP/release-notes.md"
+          fi

.github/workflows/publish-release.yml

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+name: Publish Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to publish (e.g., 3.6.0)'
+        required: true
+        type: string
+
+env:
+  VERSION: ${{ github.event.inputs.version }}
+
+permissions:
+  contents: write
+  id-token: write
+
+jobs:
+  publish-release:
+    runs-on: ubuntu-latest
+    environment: npm
+    steps:
+      - uses: actions/create-github-app-token@v1
+        id: app-token
+        with:
+          app-id: ${{ vars.ITERABLE_SDK_RELEASE_APP_ID }}
+          private-key: ${{ secrets.ITERABLE_SDK_RELEASE_APP_PRIVATE_KEY }}
+
+      - uses: actions/checkout@v4
+        with:
+          ref: master
+          token: ${{ steps.app-token.outputs.token }}
+
+      - name: Verify release is ready
+        run: |
+          if ! grep -qE "^## $VERSION\b" CHANGELOG.md; then
+            echo "::error::CHANGELOG.md has no entry for $VERSION. Merge the prepare-release PR to master before running this workflow."
+            exit 1
+          fi
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'yarn'
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Update npm for OIDC support
+        run: npm install -g npm@latest
+
+      - run: yarn install --frozen-lockfile
+
+      - run: yarn test --maxWorkers=2
+
+      - run: yarn prepare
+
+      - name: Publish to npm
+        run: npm publish --provenance
+
+      - name: Publish draft GitHub release and tag main
+        env:
+          GH_TOKEN: ${{ steps.app-token.outputs.token }}
+        run: |
+          gh release edit "$VERSION" \
+            --draft=false \
+            --target "$(git rev-parse HEAD)" \
+            --latest
+
+      - name: Slack notification
+        run: |
+          release_url="https://github.com/${{ github.repository }}/releases/tag/$VERSION"
+          payload=$(jq -n \
+            --arg text ":package: *React Native SDK ${VERSION}* has been released. <${release_url}|View release notes>." \
+            '{"text": $text}')
+          curl -sS -X POST -H 'Content-type: application/json' --data "$payload" "${{ secrets.SLACK_WEBHOOK }}"
+
+      - name: Slack failure notification
+        if: failure()
+        run: |
+          run_url="${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}/attempts/${{ github.run_attempt }}"
+          payload=$(jq -n \
+            --arg text ":alert: React Native SDK release ${VERSION} failed (attempt ${{ github.run_attempt }}). Run: ${run_url}" \
+            '{"text": $text}')
+          curl -sS -X POST -H 'Content-type: application/json' --data "$payload" "${{ secrets.SLACK_WEBHOOK }}"