chore(ci): add changeset status check workflow

Co-Authored-By: Claude <noreply@anthropic.com>

Author: zrosenbauer

.github/workflows/changeset-check.yml

@@ -0,0 +1,31 @@
+name: Changeset Check
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  changeset-check:
+    name: Changeset Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: 'pnpm'
+
+      - name: Install Dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Check for changeset
+        run: pnpm changeset status --since=origin/main