Upgrade PromptKit to v0.9.0

internal/cli/production_contract_test.go

@@ -343,6 +343,9 @@ func TestProductionPromptAssetsPrepareWithoutProviderCredentials(t *testing.T) {
 		Inputs  []struct {
 			Name string `yaml:"name"`
 		} `yaml:"inputs"`
+		Messages []struct {
+			Role string `yaml:"role"`
+		} `yaml:"messages"`
 	}
 	preparedPrompts := 0
 	if err := fs.WalkDir(promptFS, ".", func(path string, entry fs.DirEntry, walkErr error) error {
@@ -360,6 +363,11 @@ func TestProductionPromptAssetsPrepareWithoutProviderCredentials(t *testing.T) {
 		if err := yaml.Unmarshal(data, &prompt); err != nil {
 			return err
 		}
+		for _, message := range prompt.Messages {
+			if message.Role != promptkit.RoleSystem && message.Role != promptkit.RoleUser {
+				return fmt.Errorf("production prompt %q uses role %q, want system or user", prompt.ID, message.Role)
+			}
+		}
 		inputs := make(map[string]promptkit.ArtifactRef, len(prompt.Inputs))
 		for _, input := range prompt.Inputs {
 			inputs[input.Name] = promptkit.Inline(`{}`)