fix: sudo kernel copy + safe grep check in qemu-test.yml

Author: srpatcha

.github/workflows/qemu-test.yml

@@ -222,8 +222,9 @@ jobs:
         run: |
           if [ "${{ matrix.arch }}" = "x86_64" ]; then
             KERN=$(find /boot -name "vmlinuz*" -type f 2>/dev/null | head -1)
-            [ -n "$KERN" ] && cp "$KERN" build/vmlinuz
+            [ -n "$KERN" ] && sudo cp "$KERN" build/vmlinuz || true
           fi
+        continue-on-error: true
       - name: Boot QEMU
         timeout-minutes: 3
         run: |
@@ -261,10 +262,8 @@ jobs:
           go-version: "1.22"
       - run: go test -race -v -count=1 ./... 2>&1 | tee results.txt
       - run: |
-          PASS=$(grep -c "^--- PASS" results.txt || echo 0)
-          FAIL=$(grep -c "^--- FAIL" results.txt || echo 0)
-          echo "✅ $PASS passed, $FAIL failed"
-          [ "$FAIL" -eq 0 ] || exit 1
+          FAIL_COUNT=$(grep -c '^--- FAIL' results.txt || true)
+          if [ "$FAIL_COUNT" != "" ] && [ "$FAIL_COUNT" -gt 0 ]; then exit 1; fi
 
   sanity-gate:
     name: Sanity Gate