platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/transport_backends_runtime_unsupported.go

@@ -0,0 +1,42 @@
+package app
+
+import (
+	"fmt"
+	"strings"
+)
+
+func (b transportUnsupportedRuntimeBackend) Action(_ TransportClient, action string) transportBackendActionResult {
+	return transportBackendActionResult{
+		OK:       false,
+		Code:     "TRANSPORT_BACKEND_RUNTIME_MODE_UNSUPPORTED",
+		Message:  fmt.Sprintf("runtime_mode %q is not supported yet for action %q", b.mode, strings.TrimSpace(action)),
+		ExitCode: -1,
+	}
+}
+
+func (b transportUnsupportedRuntimeBackend) Health(_ TransportClient) transportBackendHealthResult {
+	return transportBackendHealthResult{
+		OK:        false,
+		Code:      "TRANSPORT_BACKEND_RUNTIME_MODE_UNSUPPORTED",
+		Message:   fmt.Sprintf("runtime_mode %q is not supported yet", b.mode),
+		Status:    TransportClientDegraded,
+		Retryable: false,
+	}
+}
+
+func (b transportUnsupportedRuntimeBackend) Provision(_ TransportClient) transportBackendActionResult {
+	return transportBackendActionResult{
+		OK:       false,
+		Code:     "TRANSPORT_BACKEND_RUNTIME_MODE_UNSUPPORTED",
+		Message:  fmt.Sprintf("runtime_mode %q is not supported yet for provision", b.mode),
+		ExitCode: -1,
+	}
+}
+
+func (b transportUnsupportedRuntimeBackend) Cleanup(_ TransportClient) transportBackendActionResult {
+	return transportBackendActionResult{
+		OK:       true,
+		ExitCode: 0,
+		Message:  fmt.Sprintf("cleanup skipped for unsupported runtime_mode %q", b.mode),
+	}
+}