Use native request execution and credential masking

internal/framework/structuredoutput/call.go

@@ -22,17 +22,15 @@ type DiagnosticContext struct {
 // Request names an embedded prompt and response schema. Profile selection and
 // credentials are supplied by the role-bound runtime client.
 type Request struct {
-	PromptID      string             `json:"prompt_id"`
-	PromptVersion string             `json:"prompt_version"`
-	Variables     map[string]string  `json:"variables"`
-	Schema        responseschema.Key `json:"schema"`
-	Context       DiagnosticContext  `json:"context"`
+	PromptID  string             `json:"prompt_id"`
+	Variables map[string]string  `json:"variables"`
+	Schema    responseschema.Key `json:"schema"`
+	Context   DiagnosticContext  `json:"context"`
 }
 
 // PromptMetadata is the execution snapshot returned by the runtime when available.
 type PromptMetadata struct {
 	PromptID       string `json:"prompt_id,omitempty"`
-	PromptVersion  string `json:"prompt_version,omitempty"`
 	DefinitionHash string `json:"definition_hash,omitempty"`
 	RenderedHash   string `json:"rendered_hash,omitempty"`
 	ProfileID      string `json:"profile_id,omitempty"`