smoke test allow pass for flaky providers (#6638)

scripts/test_providers.sh

@@ -13,6 +13,14 @@ for arg in "$@"; do
   esac
 done
 
+# Flaky models that are allowed to fail without failing the entire test run.
+# These are typically preview/experimental models with inconsistent tool-calling behavior.
+# Failures are still reported but don't block PRs.
+ALLOWED_FAILURES=(
+  "google:gemini-3-pro-preview"
+  "openrouter:nvidia/nemotron-3-nano-30b-a3b"
+)
+
 if [ -f .env ]; then
   export $(grep -v '^#' .env | xargs)
 fi
@@ -71,7 +79,20 @@ else
 fi
 echo ""
 
+is_allowed_failure() {
+  local provider="$1"
+  local model="$2"
+  local key="${provider}:${model}"
+  for allowed in "${ALLOWED_FAILURES[@]}"; do
+    if [ "$allowed" = "$key" ]; then
+      return 0
+    fi
+  done
+  return 1
+}
+
 RESULTS=()
+HARD_FAILURES=()
 
 for provider_config in "${PROVIDERS[@]}"; do
   # Split on " -> " to get provider and models
@@ -94,8 +115,14 @@ for provider_config in "${PROVIDERS[@]}"; do
       echo "✓ SUCCESS: Test passed - $SUCCESS_MSG"
       RESULTS+=("✓ ${PROVIDER}: ${MODEL}")
     else
-      echo "✗ FAILED: Test failed - $FAILURE_MSG"
-      RESULTS+=("✗ ${PROVIDER}: ${MODEL}")
+      if is_allowed_failure "$PROVIDER" "$MODEL"; then
+        echo "⚠ FLAKY: Test failed but model is in allowed failures list - $FAILURE_MSG"
+        RESULTS+=("⚠ ${PROVIDER}: ${MODEL} (flaky)")
+      else
+        echo "✗ FAILED: Test failed - $FAILURE_MSG"
+        RESULTS+=("✗ ${PROVIDER}: ${MODEL}")
+        HARD_FAILURES+=("${PROVIDER}: ${MODEL}")
+      fi
     fi
     rm "$TMPFILE"
     rm -rf "$TESTDIR"
@@ -107,11 +134,22 @@ echo "=== Test Summary ==="
 for result in "${RESULTS[@]}"; do
   echo "$result"
 done
-if echo "${RESULTS[@]}" | grep -q "✗"; then
+
+if [ ${#HARD_FAILURES[@]} -gt 0 ]; then
+  echo ""
+  echo "Hard failures (${#HARD_FAILURES[@]}):"
+  for failure in "${HARD_FAILURES[@]}"; do
+    echo "  - $failure"
+  done
   echo ""
   echo "Some tests failed!"
   exit 1
 else
-  echo ""
-  echo "All tests passed!"
+  if echo "${RESULTS[@]}" | grep -q "⚠"; then
+    echo ""
+    echo "All required tests passed! (some flaky tests failed but are allowed)"
+  else
+    echo ""
+    echo "All tests passed!"
+  fi
 fi