Mcp/deploy cmd (#4042)

## Changes
Added combined deploy command simplifying agents workflow

## Why
Agents won't skip validation step or get confused between bundle deploy
and bundle run "resource name"

## Tests
<!-- How have you tested the changes? -->

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Author: igrekun

experimental/apps-mcp/cmd/deploy.go

@@ -0,0 +1,131 @@
+package mcp
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/databricks/cli/bundle"
+	"github.com/databricks/cli/bundle/resources"
+	"github.com/databricks/cli/bundle/run"
+	"github.com/databricks/cli/cmd/bundle/utils"
+	"github.com/databricks/cli/cmd/root"
+	"github.com/databricks/cli/experimental/apps-mcp/lib/validation"
+	"github.com/databricks/cli/libs/cmdio"
+	"github.com/databricks/cli/libs/log"
+	"github.com/spf13/cobra"
+)
+
+func newDeployCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "deploy",
+		Short: "Validate, deploy bundle, and run app",
+		Long: `Validate, deploy bundle, and run app.
+
+This command runs a complete deployment pipeline:
+1. Validates the Node.js project (npm install, build, typecheck, test)
+2. Deploys the bundle to the workspace
+3. Runs the app defined in the bundle
+
+The command will stop immediately if any step fails.`,
+		Args: root.NoArgs,
+		RunE: deployRun,
+	}
+
+	// Add --var flag required by ProcessBundle
+	cmd.Flags().StringSlice("var", []string{}, `set values for variables defined in bundle config. Example: --var="foo=bar"`)
+
+	return cmd
+}
+
+func deployRun(cmd *cobra.Command, args []string) error {
+	ctx := cmd.Context()
+
+	log.Infof(ctx, "Running Node.js validation...")
+	validator := &validation.ValidationNodeJs{}
+	result, err := validator.Validate(ctx, ".")
+	if err != nil {
+		return fmt.Errorf("validation error: %w", err)
+	}
+
+	cmdio.LogString(ctx, result.String())
+
+	if !result.Success {
+		return errors.New("validation failed")
+	}
+	log.Infof(ctx, "Validation passed")
+
+	log.Infof(ctx, "Deploying bundle...")
+	b, err := utils.ProcessBundle(cmd, utils.ProcessOptions{
+		AlwaysPull:   true,
+		FastValidate: true,
+		Build:        true,
+		Deploy:       true,
+	})
+	if err != nil {
+		return fmt.Errorf("deploy failed: %w", err)
+	}
+	log.Infof(ctx, "Deploy completed")
+
+	appKey, err := detectApp(b)
+	if err != nil {
+		return err
+	}
+
+	log.Infof(ctx, "Running app: %s", appKey)
+	err = runApp(ctx, b, appKey)
+	if err != nil {
+		return fmt.Errorf("failed to run app: %w", err)
+	}
+
+	return nil
+}
+
+// detectApp finds the single app in the bundle configuration.
+func detectApp(b *bundle.Bundle) (string, error) {
+	apps := b.Config.Resources.Apps
+
+	if len(apps) == 0 {
+		return "", errors.New("no apps found in bundle configuration")
+	}
+
+	if len(apps) > 1 {
+		return "", errors.New("multiple apps found in bundle, cannot auto-detect")
+	}
+
+	// Get the single app key
+	for key := range apps {
+		return key, nil
+	}
+
+	return "", errors.New("unexpected error detecting app")
+}
+
+// runApp runs the specified app using the runner interface.
+func runApp(ctx context.Context, b *bundle.Bundle, appKey string) error {
+	ref, err := resources.Lookup(b, appKey, run.IsRunnable)
+	if err != nil {
+		return fmt.Errorf("failed to lookup app: %w", err)
+	}
+
+	runner, err := run.ToRunner(b, ref)
+	if err != nil {
+		return fmt.Errorf("failed to create runner: %w", err)
+	}
+
+	output, err := runner.Run(ctx, &run.Options{})
+	if err != nil {
+		return fmt.Errorf("failed to run app: %w", err)
+	}
+
+	// Log output
+	if output != nil {
+		resultString, err := output.String()
+		if err != nil {
+			return err
+		}
+		log.Infof(ctx, "App output: %s", resultString)
+	}
+
+	return nil
+}

experimental/apps-mcp/cmd/tools.go

@@ -15,6 +15,7 @@ func newToolsCmd() *cobra.Command {
 	cmd.AddCommand(newDiscoverSchemaCmd())
 	cmd.AddCommand(newInitTemplateCmd())
 	cmd.AddCommand(newValidateCmd())
+	cmd.AddCommand(newDeployCmd())
 
 	return cmd
 }