ci: add CI + Release + owner auto-merge + dependabot

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 5
+    groups:
+      tooling:
+        patterns: ["typescript", "@types/*", "tsup", "vitest", "eslint*", "@typescript-eslint/*"]
+      runtime:
+        patterns: ["viem", "alloy*"]
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/ci.yml

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+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: lint + typecheck + test + build
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+          run_install: false
+
+      - name: Setup Node 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'pnpm'
+
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm typecheck
+      - run: pnpm test -- --passWithNoTests
+      - run: pnpm build

.github/workflows/owner-auto-merge.yml

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+name: Owner auto-merge
+
+on:
+  pull_request_target:
+    types: [opened, reopened, synchronize, ready_for_review]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  enable-auto-merge:
+    runs-on: ubuntu-22.04
+    if: >
+      github.event.pull_request.user.login == 'satyakwok' &&
+      github.event.pull_request.draft == false
+    steps:
+      - name: Enable auto-merge (squash) for owner PR
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_URL: ${{ github.event.pull_request.html_url }}
+        run: |
+          set -e
+          gh pr merge --auto --squash "$PR_URL" || {
+            echo "::warning::auto-merge enable returned non-zero — PR may already be merged, conflicted, or have auto-merge already enabled."
+            exit 0
+          }

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+permissions:
+  contents: write
+
+jobs:
+  publish:
+    name: Publish to npm
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+          run_install: false
+
+      - name: Setup Node 20 with npm registry
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'pnpm'
+          registry-url: 'https://registry.npmjs.org'
+
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm typecheck
+      - run: pnpm test
+      - run: pnpm build
+
+      - name: Publish to npm
+        run: pnpm publish --no-git-checks --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+      - name: Create GitHub release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: gh release create "${GITHUB_REF_NAME}" --generate-notes