ci: add auto-publish to npm with changesets and provenance

.changeset/config.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@3.1.1/schema.json",
+  "changelog": [
+    "@changesets/changelog-github",
+    { "repo": "OpenRouterTeam/typescript-agent" }
+  ],
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

.github/workflows/ci.yaml

@@ -0,0 +1,26 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      - run: pnpm run lint
+
+      - run: pnpm run typecheck
+
+      - run: pnpm run test

.github/workflows/publish.yaml

@@ -0,0 +1,42 @@
+name: Release
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: write # For creating releases and the Version Packages PR
+  pull-requests: write # For creating/updating the Version Packages PR
+  id-token: write # For npm provenance signing
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    environment: npm-publish
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+          registry-url: https://registry.npmjs.org
+
+      - run: pnpm install --frozen-lockfile
+
+      - run: pnpm run build
+
+      - run: pnpm run test
+
+      - name: Create Release PR or Publish
+        id: changesets
+        uses: changesets/action@v1
+        with:
+          publish: pnpm publish --no-git-checks --provenance --access public
+          title: "chore: version packages"
+          commit: "chore: version packages"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.gitignore

@@ -1,2 +1,3 @@
 esm/
+node_modules/
 .eslintcache

package.json

@@ -125,10 +125,12 @@
     "compile": "tsc"
   },
   "dependencies": {
-    "@openrouter/sdk": "workspace:*",
+    "@openrouter/sdk": "latest",
     "zod": "^4.0.0"
   },
   "devDependencies": {
+    "@changesets/changelog-github": "^0.6.0",
+    "@changesets/cli": "^2.30.0",
     "@eslint/js": "^9.19.0",
     "@types/node": "^22.13.12",
     "dotenv": "^16.4.7",