TEMP: inject failure in windows upload leg for rc5 cleanup validation (do not merge)

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: TMHSDigital

.github/workflows/go.yml

@@ -125,6 +125,14 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-go-
 
+    # TEMPORARY failure injection for rc5 cleanup validation. REMOVE before merge.
+    - name: Inject failure for cleanup validation
+      if: matrix.goos == 'windows'
+      shell: bash
+      run: |
+        echo "Intentional failure to validate cleanup-failed-release."
+        exit 1
+
     - name: Build
       env:
         GOOS: ${{ matrix.goos }}