Fix Fabric env vars: use FABRIC_HOST and add FABRIC_WORKSPACE_ID

The integration test config expects FABRIC_HOST (not FABRIC_SERVER)
and FABRIC_WORKSPACE_ID which was missing entirely.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: eakmanrq <6326532+eakmanrq@users.noreply.github.com>

Author: eakmanrq

.github/workflows/pr.yaml

@@ -334,10 +334,11 @@ jobs:
       ATHENA_S3_WAREHOUSE_LOCATION: ${{ secrets.ATHENA_S3_WAREHOUSE_LOCATION }}
       AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
       AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-      FABRIC_SERVER: ${{ secrets.FABRIC_SERVER }}
+      FABRIC_HOST: ${{ secrets.FABRIC_HOST }}
       FABRIC_CLIENT_ID: ${{ secrets.FABRIC_CLIENT_ID }}
       FABRIC_CLIENT_SECRET: ${{ secrets.FABRIC_CLIENT_SECRET }}
       FABRIC_TENANT_ID: ${{ secrets.FABRIC_TENANT_ID }}
+      FABRIC_WORKSPACE_ID: ${{ secrets.FABRIC_WORKSPACE_ID }}
     steps:
       - uses: actions/checkout@v5
       - name: Set up Python