feat: enhance workspace init with auto-detection and relative path resolution

- Auto-detect and pre-fill OpenAPI spec and Stainless config files in workspace init form
- Resolve workspace config file paths relative to config file location in build command
- Add support for common file patterns (openapi.yml, api.yml, spec.yml, etc.)

Author: yjp20

pkg/cmd/build.go

@@ -10,6 +10,7 @@ import (
 	"net/http"
 	"os"
 	"os/exec"
+	"path/filepath"
 	"time"
 
 	"github.com/stainless-api/stainless-api-go"
@@ -533,18 +534,25 @@ func initAPICommandWithWorkspaceDefaults(ctx context.Context, cmd *cli.Command)
 	if err != nil {
 		return nil, err
 	}
-	config, _, err := FindWorkspaceConfig()
+	config, configPath, err := FindWorkspaceConfig()
 	if err == nil && config != nil {
+		// Get the directory containing the workspace config file
+		configDir := filepath.Dir(configPath)
+
 		if !cmd.IsSet("openapi-spec") && !cmd.IsSet("oas") && config.OpenAPISpec != "" {
+			// Resolve OpenAPI spec path relative to workspace config directory
+			openAPIPath := filepath.Join(configDir, config.OpenAPISpec)
 			fileAction := getAPIFlagFileAction("body", "revision.openapi\\.yml.content")
-			if err := fileAction(cc, cmd, config.OpenAPISpec); err != nil {
+			if err := fileAction(cc, cmd, openAPIPath); err != nil {
 				return nil, fmt.Errorf("failed to load OpenAPI spec from workspace config: %v", err)
 			}
 		}
 
 		if !cmd.IsSet("stainless-config") && !cmd.IsSet("config") && config.StainlessConfig != "" {
+			// Resolve Stainless config path relative to workspace config directory
+			stainlessConfigPath := filepath.Join(configDir, config.StainlessConfig)
 			fileAction := getAPIFlagFileAction("body", "revision.openapi\\.stainless\\.yml.content")
-			if err := fileAction(cc, cmd, config.StainlessConfig); err != nil {
+			if err := fileAction(cc, cmd, stainlessConfigPath); err != nil {
 				return nil, fmt.Errorf("failed to load Stainless config from workspace config: %v", err)
 			}
 		}

pkg/cmd/workspace.go

@@ -74,6 +74,10 @@ func handleInitWorkspace(ctx context.Context, cmd *cli.Command) error {
 	projectName := cmd.String("project")
 	var openAPISpec, stainlessConfig string
 
+	// Pre-fill OpenAPI spec and Stainless config if found
+	openAPISpec = findOpenAPISpec()
+	stainlessConfig = findStainlessConfig()
+
 	// If project name wasn't provided via flag, prompt for all fields interactively
 	if projectName == "" {
 		projectInfoMap := fetchUserProjects(ctx)
@@ -249,6 +253,42 @@ func GetProjectNameFromConfig() string {
 	return config.Project
 }
 
+// findOpenAPISpec searches for common OpenAPI spec files in the current directory
+func findOpenAPISpec() string {
+	commonOpenAPIFiles := []string{
+		"openapi.yml",
+		"openapi.yaml",
+		"api.yml",
+		"api.yaml",
+		"spec.yml",
+		"spec.yaml",
+	}
+
+	for _, filename := range commonOpenAPIFiles {
+		if _, err := os.Stat(filename); err == nil {
+			return filename
+		}
+	}
+	return ""
+}
+
+// findStainlessConfig searches for common Stainless config files in the current directory
+func findStainlessConfig() string {
+	commonStainlessFiles := []string{
+		"openapi.stainless.yml",
+		"openapi.stainless.yaml",
+		"stainless.yml",
+		"stainless.yaml",
+	}
+
+	for _, filename := range commonStainlessFiles {
+		if _, err := os.Stat(filename); err == nil {
+			return filename
+		}
+	}
+	return ""
+}
+
 // InitWorkspaceConfig initializes a new workspace config in the current directory
 func InitWorkspaceConfig(projectName, openAPISpec, stainlessConfig string) error {
 	// Get current working directory