ci: adopt release-please and OIDC publishing

.github/workflows/release.yml

@@ -0,0 +1,38 @@
+name: release
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    outputs:
+      release_created: ${{ steps.release.outputs.release_created }}
+    steps:
+      - uses: googleapis/release-please-action@v5
+        id: release
+        with:
+          release-type: node
+          include-component-in-tag: false
+
+  publish:
+    needs: release-please
+    if: ${{ needs.release-please.outputs.release_created == 'true' }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+          registry-url: 'https://registry.npmjs.org'
+      - run: npm ci
+      - run: npm publish

package.json

@@ -60,11 +60,8 @@
     "coverage": "node --test --experimental-test-coverage --import=tsx --test-coverage-exclude='test/**' --test-coverage-lines=100 --test-coverage-branches=100 --test-coverage-functions=100 test/*.test.ts",
     "format": "biome check --write .",
     "lint": "biome check .",
-    "postrelease": "git push --follow-tags && npm publish",
     "prebuild": "rm -rf dist",
     "prepublishOnly": "npm run build",
-    "prerelease": "git fetch --tags && npm test && npm run test:pack",
-    "release": "npm version patch",
     "test": "npm run lint && npm run typecheck && npm run build && node --test --import=tsx test/*.test.ts",
     "test:pack": "bash scripts/test-pack.sh",
     "test:watch": "node --test --watch --import=tsx test/*.test.ts",