diff --git a/.github/workflows/cleanup-preview.yml b/.github/workflows/cleanup-preview.yml
new file mode 100644
index 0000000..7b0e388
--- /dev/null
+++ b/.github/workflows/cleanup-preview.yml
@@ -0,0 +1,34 @@
+name: Cleanup Preview Branch
+
+on:
+  pull_request:
+    types: [closed]
+
+permissions:
+  contents: read
+
+jobs:
+  cleanup:
+    name: Delete Xata preview branch
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Xata CLI
+        run: |
+          curl -fsSL https://xata.io/install.sh | bash
+          echo "$HOME/.config/xata/bin" >> $GITHUB_PATH
+
+      - name: Delete preview branch
+        env:
+          XATA_API_KEY: ${{ secrets.XATA_API_KEY }}
+          XATA_ORG_ID: ${{ secrets.XATA_ORG_ID }}
+          XATA_MAIN_PROJECT_ID: ${{ secrets.XATA_MAIN_PROJECT_ID }}
+          REF: ${{ github.event.pull_request.head.ref }}
+        run: |
+          set -euo pipefail
+          SAFE_REF=$(echo -n "$REF" | tr -c 'a-zA-Z0-9-_' '-' | cut -c1-50)
+          BRANCH_NAME="preview-${SAFE_REF}"
+          echo "Deleting Xata branch $BRANCH_NAME"
+          xata branch delete "$BRANCH_NAME" \
+            --organization "$XATA_ORG_ID" \
+            --project "$XATA_MAIN_PROJECT_ID" \
+            --yes || true
diff --git a/package.json b/package.json
index 019d893..9293b6c 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
+    "vercel-build": "bash scripts/vercel-build.sh",
     "start": "next start",
     "lint": "eslint",
     "db:generate": "drizzle-kit generate",
diff --git a/scripts/vercel-build.sh b/scripts/vercel-build.sh
new file mode 100755
index 0000000..0334367
--- /dev/null
+++ b/scripts/vercel-build.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+# Vercel build entry point. For preview deploys, fork a Xata branch off `main`
+# and point DATABASE_URL at it so each PR gets isolated metadata storage.
+# Production builds (main) fall through to a plain `next build` that reads the
+# DATABASE_URL configured in the Vercel project.
+
+set -euo pipefail
+
+# The CLI reads XATA_API_KEY directly from the env; org/project come in via flags.
+export XATA_API_KEY="$XATA_VERCEL_API_KEY"
+
+if ! command -v xata >/dev/null 2>&1; then
+  curl -fsSL https://xata.io/install.sh | bash
+  export PATH="$HOME/.config/xata/bin:$PATH"
+fi
+
+xata version
+
+if [[ "${VERCEL_ENV:-}" == "preview" && -n "${VERCEL_GIT_COMMIT_REF:-}" ]]; then
+  # Sanitize the git ref into a legal Xata branch name (cap at 50 chars so
+  # the "preview-" prefix still leaves room under Xata's 63-char limit).
+  SAFE_REF=$(echo -n "$VERCEL_GIT_COMMIT_REF" | tr -c 'a-zA-Z0-9-_' '-' | cut -c1-50)
+  BRANCH_NAME="preview-${SAFE_REF}"
+
+  XATA_FLAGS=(--organization "$XATA_ORG_ID" --project "$XATA_MAIN_PROJECT_ID")
+
+  # Recreate from scratch on every push so the preview reflects the PR's
+  # current schema + seed without drift across rebuilds.
+  xata branch delete "$BRANCH_NAME" "${XATA_FLAGS[@]}" --yes || true
+  xata branch create --name "$BRANCH_NAME" "${XATA_FLAGS[@]}"
+  xata branch wait-ready "$BRANCH_NAME" "${XATA_FLAGS[@]}"
+
+  DSN=$(xata branch url "$BRANCH_NAME" --type primary "${XATA_FLAGS[@]}")
+  echo "DATABASE_URL=$DSN" >> .env.production
+
+  DATABASE_URL="$DSN" npm run db:migrate
+fi
+
+npm run build