fix(ci): use D1 database name instead of ID for schema migration

wrangler d1 execute expects the database name ("mails"), not the UUID.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Digidai

.github/workflows/deploy-worker.yml

@@ -39,8 +39,7 @@ jobs:
         env:
           CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
           CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-          D1_ID: ${{ secrets.D1_DATABASE_ID }}
-        run: cd worker && npx wrangler d1 execute "$D1_ID" --file=schema.sql --remote
+        run: cd worker && npx wrangler d1 execute mails --file=schema.sql --remote
 
       - name: Deploy to Cloudflare Workers
         uses: cloudflare/wrangler-action@v3