Add full shell, replaceable Omics adapter and bilingual interaction

Implement approved specification #32 and tickets #33-#37. Keep host authentication server-verified and pin session interaction language. Compile scoped base selectors for browser compatibility and retain full gutters during CSS pruning.

tools/tht/internal/setup/files.go

@@ -36,6 +36,7 @@ var atomicWriteNewFile = writeNewFileAtomically
 var effectiveUID = currentEffectiveUID
 
 type answers struct {
+	shell                            config.Shell
 	installationID, profile          string
 	workspaceRemote, workspaceBranch string
 	workspaceAccess                  string
@@ -65,6 +66,7 @@ type generatedDescriptor struct {
 		} `yaml:"runtimeProjection,omitempty"`
 	} `yaml:"authentication"`
 	ModelCatalog config.ModelCatalog `yaml:"modelCatalog"`
+	Shell        config.Shell        `yaml:"shell,omitempty"`
 	Overrides    []string            `yaml:"overrides"`
 }
 
@@ -226,6 +228,11 @@ func collectAnswers(request Request, input io.Reader, output io.Writer, root str
 func answersFromRequest(request Request) answers {
 	answer := request.Answers
 	return answers{
+		shell: config.Shell{
+			Mode:          firstNonEmpty(answer.ShellMode, os.Getenv("THT_SETUP_SHELL_MODE")),
+			DefaultLocale: firstNonEmpty(answer.ShellDefaultLocale, os.Getenv("THT_SETUP_SHELL_DEFAULT_LOCALE")),
+			Adapter:       firstNonEmpty(answer.ShellAdapter, os.Getenv("THT_SETUP_SHELL_ADAPTER")),
+		},
 		workspaceRemote:       firstNonEmpty(answer.WorkspaceRemote, os.Getenv("THT_SETUP_WORKSPACE_REMOTE")),
 		workspaceBranch:       firstNonEmpty(answer.WorkspaceBranch, os.Getenv("THT_SETUP_WORKSPACE_BRANCH")),
 		workspaceAccess:       firstNonEmpty(answer.WorkspaceAccess, os.Getenv("THT_SETUP_WORKSPACE_ACCESS")),
@@ -272,6 +279,9 @@ func prompt(scanner *bufio.Scanner, output io.Writer, question, defaultValue str
 }
 
 func validateAnswers(value answers) error {
+	if err := value.shell.NormalizeDefaults(); err != nil {
+		return err
+	}
 	if !installationIDPattern.MatchString(value.installationID) {
 		return errors.New("installation ID must contain only letters, numbers, dashes, and underscores")
 	}
@@ -322,6 +332,13 @@ func installationDirectory(root, id string) (string, error) {
 
 func render(root, descriptorPath string, value answers) ([]byte, []byte, error) {
 	descriptor := generatedDescriptor{SchemaVersion: 2, Profile: value.profile, ProjectDirectory: root, EnvFile: filepath.Join(filepath.Dir(descriptorPath), environmentName), ModelCatalog: defaultModelCatalog()}
+	// Preserve the legacy descriptor bytes when no shell setting was requested.
+	if value.shell != (config.Shell{}) {
+		if err := value.shell.NormalizeDefaults(); err != nil {
+			return nil, nil, err
+		}
+		descriptor.Shell = value.shell
+	}
 	descriptor.Workspace.Remote, descriptor.Workspace.Branch, descriptor.Workspace.Access = value.workspaceRemote, value.workspaceBranch, value.workspaceAccess
 	descriptor.Authentication.ConfigDirectory = filepath.Join(filepath.Dir(descriptorPath), "auth")
 	if value.profile == "server" {