feat(cli): add D601 artifact registry planning

Add a first-stage artifact-registry CLI for D601 host-managed CNCF Distribution planning, rendering, dry-run install, and readonly status checks. Document the loopback-only boundary and future backend-core artifact CD flow.\n\nCloses #1.

scripts/cli.ts

@@ -17,6 +17,7 @@ import { parseNetworkPerfOptions, runNetworkPerf } from "./src/network-perf";
 import { ciHelp, runCiCommand } from "./src/ci";
 import { runSwapCommand } from "./src/swap";
 import { runDevEnvCommand } from "./src/dev-env";
+import { runArtifactRegistryCommand } from "./src/artifact-registry";
 import { isHelpToken, rootHelp, serverHelp, sshHelp, staticNamespaceHelp } from "./src/help";
 
 const remoteOptions = extractRemoteCliOptions(process.argv.slice(2));
@@ -134,6 +135,14 @@ async function main(): Promise<void> {
     return;
   }
 
+  if (top === "artifact-registry") {
+    const result = runArtifactRegistryCommand(args.slice(1));
+    const ok = (result as { ok?: unknown }).ok !== false;
+    emitJson(commandName, result, ok);
+    if (!ok) process.exitCode = 1;
+    return;
+  }
+
   const config = readConfig();
 
   if (top === "ssh") {

scripts/src/artifact-registry.ts

@@ -0,0 +1,513 @@
+import { createHash } from "node:crypto";
+import { runCommand, type CommandResult } from "./command";
+import { repoRoot } from "./config";
+
+type ArtifactRegistryAction = "plan" | "render" | "status" | "health" | "install";
+
+interface ArtifactRegistryOptions {
+  providerId: string;
+  host: string;
+  port: number;
+  image: string;
+  baseDir: string;
+  storageDir: string;
+  unitName: string;
+  composeProject: string;
+  serviceName: string;
+  containerName: string;
+  timeoutMs: number;
+  dryRun: boolean;
+}
+
+interface RenderedFile {
+  path: string;
+  mode: string;
+  sha256: string;
+  content: string;
+}
+
+interface RenderedBundle {
+  files: RenderedFile[];
+  paths: {
+    unit: string;
+    compose: string;
+    config: string;
+    storage: string;
+    baseDir: string;
+  };
+}
+
+const defaultOptions: ArtifactRegistryOptions = {
+  providerId: "D601",
+  host: "127.0.0.1",
+  port: 5000,
+  image: "registry:2.8.3",
+  baseDir: "/home/ubuntu/.unidesk/artifact-registry",
+  storageDir: "/home/ubuntu/.unidesk/registry-storage",
+  unitName: "unidesk-artifact-registry.service",
+  composeProject: "unidesk-artifact-registry",
+  serviceName: "registry",
+  containerName: "unidesk-artifact-registry",
+  timeoutMs: 30_000,
+  dryRun: false,
+};
+
+function isHelpArg(value: string | undefined): boolean {
+  return value === undefined || value === "help" || value === "--help" || value === "-h";
+}
+
+function requireValue(args: string[], index: number, option: string): string {
+  const value = args[index + 1];
+  if (value === undefined || value.length === 0) throw new Error(`${option} requires a non-empty value`);
+  return value;
+}
+
+function positiveInt(value: string, option: string): number {
+  const parsed = Number(value);
+  if (!Number.isInteger(parsed) || parsed <= 0) throw new Error(`${option} must be a positive integer`);
+  return parsed;
+}
+
+function absolutePath(value: string, option: string): string {
+  if (!value.startsWith("/")) throw new Error(`${option} must be an absolute path`);
+  if (value.includes("\n") || value.includes("\0")) throw new Error(`${option} must not contain control characters`);
+  return value.replace(/\/+$/u, "");
+}
+
+function parseOptions(args: string[]): ArtifactRegistryOptions {
+  const options = { ...defaultOptions };
+  for (let index = 0; index < args.length; index += 1) {
+    const arg = args[index];
+    if (arg === "--dry-run") {
+      options.dryRun = true;
+    } else if (arg === "--provider-id") {
+      options.providerId = requireValue(args, index, arg);
+      index += 1;
+    } else if (arg === "--host") {
+      options.host = requireValue(args, index, arg);
+      index += 1;
+    } else if (arg === "--port") {
+      options.port = positiveInt(requireValue(args, index, arg), arg);
+      index += 1;
+    } else if (arg === "--image") {
+      options.image = requireValue(args, index, arg);
+      index += 1;
+    } else if (arg === "--base-dir") {
+      options.baseDir = absolutePath(requireValue(args, index, arg), arg);
+      index += 1;
+    } else if (arg === "--storage-dir") {
+      options.storageDir = absolutePath(requireValue(args, index, arg), arg);
+      index += 1;
+    } else if (arg === "--timeout-ms") {
+      options.timeoutMs = positiveInt(requireValue(args, index, arg), arg);
+      index += 1;
+    } else {
+      throw new Error(`unknown artifact-registry option: ${arg}`);
+    }
+  }
+  if (options.host !== "127.0.0.1") throw new Error("--host is first-stage restricted to 127.0.0.1");
+  if (options.port !== 5000) throw new Error("--port is first-stage restricted to 5000");
+  return options;
+}
+
+function sha256(text: string): string {
+  return createHash("sha256").update(text).digest("hex");
+}
+
+function shellQuote(value: string): string {
+  return `'${value.replace(/'/g, `'\\''`)}'`;
+}
+
+function file(path: string, content: string, mode = "0644"): RenderedFile {
+  return { path, mode, sha256: sha256(content), content };
+}
+
+function registryConfig(): string {
+  return `version: 0.1
+log:
+  fields:
+    service: unidesk-artifact-registry
+storage:
+  filesystem:
+    rootdirectory: /var/lib/registry
+  delete:
+    enabled: false
+http:
+  addr: :5000
+  headers:
+    X-Content-Type-Options: [nosniff]
+health:
+  storagedriver:
+    enabled: true
+    interval: 10s
+    threshold: 3
+`;
+}
+
+function composeFile(options: ArtifactRegistryOptions): string {
+  return `name: ${options.composeProject}
+services:
+  ${options.serviceName}:
+    image: ${options.image}
+    container_name: ${options.containerName}
+    restart: unless-stopped
+    ports:
+      - "${options.host}:${options.port}:5000"
+    volumes:
+      - "${options.baseDir}/config.yml:/etc/docker/registry/config.yml:ro"
+      - "${options.storageDir}:/var/lib/registry"
+    labels:
+      unidesk.ai/service-id: artifact-registry
+      unidesk.ai/managed-by: host-systemd-docker-compose
+      unidesk.ai/provider-id: ${options.providerId}
+`;
+}
+
+function systemdUnit(options: ArtifactRegistryOptions): string {
+  return `[Unit]
+Description=UniDesk D601 Artifact Registry (CNCF Distribution)
+Documentation=https://github.com/pikasTech/unidesk/blob/master/docs/reference/artifact-registry.md
+Requires=docker.service
+After=docker.service network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+WorkingDirectory=${options.baseDir}
+ExecStartPre=/bin/mkdir -p ${options.baseDir} ${options.storageDir}
+ExecStart=/bin/sh -lc 'docker compose -p ${options.composeProject} -f ${options.baseDir}/compose.yml up -d --remove-orphans'
+ExecStop=/bin/sh -lc 'docker compose -p ${options.composeProject} -f ${options.baseDir}/compose.yml down'
+TimeoutStartSec=120
+TimeoutStopSec=120
+
+[Install]
+WantedBy=multi-user.target
+`;
+}
+
+function renderBundle(options: ArtifactRegistryOptions): RenderedBundle {
+  const paths = {
+    unit: `/etc/systemd/system/${options.unitName}`,
+    compose: `${options.baseDir}/compose.yml`,
+    config: `${options.baseDir}/config.yml`,
+    storage: options.storageDir,
+    baseDir: options.baseDir,
+  };
+  return {
+    paths,
+    files: [
+      file(paths.config, registryConfig()),
+      file(paths.compose, composeFile(options)),
+      file(paths.unit, systemdUnit(options)),
+    ],
+  };
+}
+
+function plan(options: ArtifactRegistryOptions): Record<string, unknown> {
+  const bundle = renderBundle(options);
+  return {
+    ok: true,
+    providerId: options.providerId,
+    mode: "d601-host-managed",
+    firstStage: true,
+    runtime: {
+      implementation: "CNCF Distribution Docker registry",
+      image: options.image,
+      endpoint: `http://${options.host}:${options.port}`,
+      publicExposure: "none",
+      orchestration: "systemd + Docker Compose on D601 host/WSL OS",
+      k3sManaged: false,
+    },
+    dependencies: [
+      { name: "Docker Engine", scope: "D601 host", requiredFor: "running the registry container" },
+      { name: "Docker Compose plugin", scope: "D601 host", requiredFor: "systemd ExecStart/ExecStop" },
+      { name: "systemd", scope: "D601 host", requiredFor: "host-managed service lifecycle" },
+      { name: "registry:2.8.3", scope: "D601 Docker cache / upstream pull", requiredFor: "CNCF Distribution runtime image" },
+      { name: "provider-gateway Host SSH", scope: "UniDesk control bridge", requiredFor: "readonly status and health checks" },
+      { name: "local filesystem storage", scope: bundle.paths.storage, requiredFor: "artifact persistence outside k3s" },
+    ],
+    boundaries: [
+      "listen only on D601 host loopback 127.0.0.1:5000",
+      "do not expose a public port, NodePort, hostPort, or third-party registry",
+      "do not run inside k3s; keep the registry outside the native k3s failure domain",
+      "first-stage CLI does not mutate D601 runtime; install is dry-run only",
+      "backend-core production deploy behavior is unchanged in this issue",
+    ],
+    renderedPaths: bundle.paths,
+    futureFlow: [
+      "D601 CI/dev builds unidesk/backend-core:<commit>",
+      "D601 pushes the image into the loopback registry",
+      "main server pulls via a controlled short-lived localhost relay",
+      "prod CD retags, recreates backend-core, and verifies live commit metadata",
+    ],
+  };
+}
+
+function statusScript(options: ArtifactRegistryOptions, bundle: RenderedBundle): string {
+  const hashes = Object.fromEntries(bundle.files.map((item) => [item.path, item.sha256]));
+  return `set -u
+kv() { printf '%s=%s\\n' "$1" "$2"; }
+bool_file() { [ -f "$1" ] && printf true || printf false; }
+bool_dir() { [ -d "$1" ] && printf true || printf false; }
+hash_file() { sha256sum "$1" 2>/dev/null | awk '{print $1}' || true; }
+unit=${shellQuote(bundle.paths.unit)}
+compose=${shellQuote(bundle.paths.compose)}
+config=${shellQuote(bundle.paths.config)}
+storage=${shellQuote(bundle.paths.storage)}
+container=${shellQuote(options.containerName)}
+expected_image=${shellQuote(options.image)}
+port=${options.port}
+kv readonly true
+kv unit_path "$unit"
+kv compose_path "$compose"
+kv config_path "$config"
+kv storage_path "$storage"
+kv unit_exists "$(bool_file "$unit")"
+kv compose_exists "$(bool_file "$compose")"
+kv config_exists "$(bool_file "$config")"
+kv storage_exists "$(bool_dir "$storage")"
+if command -v systemctl >/dev/null 2>&1; then
+  kv systemctl_available true
+  kv unit_active "$(systemctl is-active "${options.unitName}" 2>/dev/null || true)"
+  kv unit_enabled "$(systemctl is-enabled "${options.unitName}" 2>/dev/null || true)"
+else
+  kv systemctl_available false
+  kv unit_active unknown
+  kv unit_enabled unknown
+fi
+if command -v docker >/dev/null 2>&1; then
+  kv docker_available true
+  container_running="$(docker inspect -f '{{.State.Running}}' "$container" 2>/dev/null || true)"
+  container_status="$(docker inspect -f '{{.State.Status}}' "$container" 2>/dev/null || true)"
+  container_image="$(docker inspect -f '{{.Config.Image}}' "$container" 2>/dev/null || true)"
+  container_restart_policy="$(docker inspect -f '{{.HostConfig.RestartPolicy.Name}}' "$container" 2>/dev/null || true)"
+  kv container_running "$([ -n "$container_running" ] && printf '%s' "$container_running" || printf false)"
+  kv container_status "$container_status"
+  kv container_image "$container_image"
+  kv container_restart_policy "$container_restart_policy"
+else
+  kv docker_available false
+  kv container_running false
+  kv container_status unknown
+  kv container_image ""
+  kv container_restart_policy unknown
+fi
+if command -v ss >/dev/null 2>&1; then
+  listeners="$(ss -ltnH 2>/dev/null | awk -v p=":$port" '$4 ~ p "$" {print $4}' || true)"
+else
+  listeners=""
+fi
+listener_count="$(printf '%s\\n' "$listeners" | sed '/^$/d' | wc -l | tr -d ' ')"
+bad_listener_count="$(printf '%s\\n' "$listeners" | sed '/^$/d' | grep -Ev "^(127[.]0[.]0[.]1|localhost):${options.port}$|^\\[::1\\]:${options.port}$|^::1:${options.port}$" | wc -l | tr -d ' ')"
+loopback_only=false
+if [ "\${listener_count:-0}" -gt 0 ] && [ "\${bad_listener_count:-0}" -eq 0 ]; then loopback_only=true; fi
+kv listener_count "\${listener_count:-0}"
+kv bad_listener_count "\${bad_listener_count:-0}"
+kv loopback_only "$loopback_only"
+if command -v curl >/dev/null 2>&1; then
+  kv curl_available true
+  kv v2_http_code "$(timeout 3 curl -fsS -o /dev/null -w '%{http_code}' http://127.0.0.1:${options.port}/v2/ 2>/dev/null || true)"
+else
+  kv curl_available false
+  kv v2_http_code ""
+fi
+config_hash="$(hash_file "$config")"
+compose_hash="$(hash_file "$compose")"
+unit_hash="$(hash_file "$unit")"
+kv config_hash "$config_hash"
+kv compose_hash "$compose_hash"
+kv unit_hash "$unit_hash"
+kv expected_config_hash ${shellQuote(hashes[bundle.paths.config] ?? "")}
+kv expected_compose_hash ${shellQuote(hashes[bundle.paths.compose] ?? "")}
+kv expected_unit_hash ${shellQuote(hashes[bundle.paths.unit] ?? "")}
+kv config_hash_matches "$([ -n "$config_hash" ] && [ "$config_hash" = ${shellQuote(hashes[bundle.paths.config] ?? "")} ] && printf true || printf false)"
+kv compose_hash_matches "$([ -n "$compose_hash" ] && [ "$compose_hash" = ${shellQuote(hashes[bundle.paths.compose] ?? "")} ] && printf true || printf false)"
+kv unit_hash_matches "$([ -n "$unit_hash" ] && [ "$unit_hash" = ${shellQuote(hashes[bundle.paths.unit] ?? "")} ] && printf true || printf false)"
+kv image_matches "$([ "\${container_image:-}" = "$expected_image" ] && printf true || printf false)"
+`;
+}
+
+function parseKeyValueOutput(stdout: string): Record<string, string> {
+  const values: Record<string, string> = {};
+  for (const line of stdout.split(/\r?\n/u)) {
+    const match = /^([A-Za-z0-9_]+)=(.*)$/u.exec(line);
+    if (match !== null) values[match[1]] = match[2];
+  }
+  return values;
+}
+
+function asBool(value: string | undefined): boolean {
+  return value === "true";
+}
+
+function commandTail(result: CommandResult): Record<string, unknown> {
+  return {
+    command: result.command.length > 7 ? [...result.command.slice(0, 7), "<readonly-script>"] : result.command,
+    exitCode: result.exitCode,
+    signal: result.signal,
+    timedOut: result.timedOut,
+    stdoutTail: result.stdout.slice(-4000),
+    stderrTail: result.stderr.slice(-4000),
+  };
+}
+
+function statusFromValues(options: ArtifactRegistryOptions, values: Record<string, string>, command: CommandResult, healthMode: boolean): Record<string, unknown> {
+  const commandOk = command.exitCode === 0 && !command.timedOut;
+  const checks = {
+    systemctlAvailable: asBool(values.systemctl_available),
+    dockerAvailable: asBool(values.docker_available),
+    curlAvailable: asBool(values.curl_available),
+    unitExists: asBool(values.unit_exists),
+    unitActive: values.unit_active === "active",
+    unitEnabled: values.unit_enabled === "enabled",
+    composeExists: asBool(values.compose_exists),
+    configExists: asBool(values.config_exists),
+    storageExists: asBool(values.storage_exists),
+    containerRunning: asBool(values.container_running),
+    loopbackOnly: asBool(values.loopback_only),
+    v2Ok: values.v2_http_code === "200",
+    imageMatches: asBool(values.image_matches),
+    configHashMatches: asBool(values.config_hash_matches),
+    composeHashMatches: asBool(values.compose_hash_matches),
+    unitHashMatches: asBool(values.unit_hash_matches),
+  };
+  const installed = checks.unitExists || checks.composeExists || checks.configExists || checks.storageExists || checks.containerRunning;
+  const healthy = commandOk
+    && checks.systemctlAvailable
+    && checks.dockerAvailable
+    && checks.unitExists
+    && checks.unitActive
+    && checks.composeExists
+    && checks.configExists
+    && checks.storageExists
+    && checks.containerRunning
+    && checks.loopbackOnly
+    && checks.v2Ok
+    && checks.imageMatches
+    && checks.configHashMatches
+    && checks.composeHashMatches
+    && checks.unitHashMatches;
+  return {
+    ok: healthMode ? healthy : commandOk,
+    readonly: true,
+    installed,
+    healthy,
+    checks,
+    observed: {
+      unit: { path: values.unit_path, active: values.unit_active, enabled: values.unit_enabled },
+      compose: { path: values.compose_path, sha256: values.compose_hash },
+      config: { path: values.config_path, sha256: values.config_hash },
+      storage: { path: values.storage_path },
+      container: {
+        name: options.containerName,
+        running: values.container_running,
+        status: values.container_status,
+        image: values.container_image,
+        restartPolicy: values.container_restart_policy,
+      },
+      listener: {
+        count: Number(values.listener_count ?? 0),
+        badCount: Number(values.bad_listener_count ?? 0),
+        loopbackOnly: checks.loopbackOnly,
+      },
+      registryApi: { v2HttpCode: values.v2_http_code },
+    },
+    expected: {
+      unitHash: values.expected_unit_hash,
+      composeHash: values.expected_compose_hash,
+      configHash: values.expected_config_hash,
+      image: options.image,
+      endpoint: `http://${options.host}:${options.port}`,
+    },
+    command: commandTail(command),
+  };
+}
+
+function runReadonlyStatus(options: ArtifactRegistryOptions, healthMode: boolean): Record<string, unknown> {
+  const bundle = renderBundle(options);
+  const script = statusScript(options, bundle);
+  const command = [process.execPath, "scripts/cli.ts", "ssh", options.providerId, "argv", "bash", "-lc", script];
+  const result = runCommand(command, repoRoot, { timeoutMs: options.timeoutMs });
+  if (result.exitCode !== 0 || result.timedOut) {
+    return {
+      ok: false,
+      readonly: true,
+      installed: false,
+      healthy: false,
+      checks: {},
+      expected: {
+        endpoint: `http://${options.host}:${options.port}`,
+        image: options.image,
+        paths: bundle.paths,
+      },
+      command: commandTail(result),
+    };
+  }
+  return statusFromValues(options, parseKeyValueOutput(result.stdout), result, healthMode);
+}
+
+function installDryRun(options: ArtifactRegistryOptions): Record<string, unknown> {
+  const bundle = renderBundle(options);
+  return {
+    ok: true,
+    dryRun: true,
+    readonly: true,
+    mutation: false,
+    providerId: options.providerId,
+    plan: plan(options),
+    render: bundle,
+    intendedRemoteActions: [
+      `mkdir -p ${options.baseDir} ${options.storageDir}`,
+      `write ${bundle.paths.config}`,
+      `write ${bundle.paths.compose}`,
+      `write ${bundle.paths.unit}`,
+      "systemctl daemon-reload",
+      `systemctl enable --now ${options.unitName}`,
+      `curl -fsS http://${options.host}:${options.port}/v2/`,
+    ],
+    note: "First-stage artifact-registry install is dry-run only; no D601 runtime files or services were changed.",
+  };
+}
+
+function localHelp(): Record<string, unknown> {
+  return {
+    ok: true,
+    command: "artifact-registry plan|render|status|health|install",
+    output: "json",
+    usage: [
+      "bun scripts/cli.ts artifact-registry plan [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry render [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry status [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry health [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry install --dry-run [--provider-id D601]",
+    ],
+    firstStage: "install without --dry-run is intentionally disabled",
+    defaults: defaultOptions,
+  };
+}
+
+export function runArtifactRegistryCommand(args: string[]): unknown {
+  const action = args[0];
+  if (isHelpArg(action)) return localHelp();
+  if (action !== "plan" && action !== "render" && action !== "status" && action !== "health" && action !== "install") {
+    throw new Error("artifact-registry usage: plan|render|status|health|install");
+  }
+  const options = parseOptions(args.slice(1));
+  if (action === "plan") return plan(options);
+  if (action === "render") return { ok: true, providerId: options.providerId, render: renderBundle(options) };
+  if (action === "status") return runReadonlyStatus(options, false);
+  if (action === "health") return runReadonlyStatus(options, true);
+  if (action === "install") {
+    if (!options.dryRun) {
+      return {
+        ok: false,
+        error: "artifact-registry install is first-stage dry-run only; pass --dry-run",
+        firstStageOnly: true,
+        mutation: false,
+      };
+    }
+    return installDryRun(options);
+  }
+  throw new Error("unreachable artifact-registry action");
+}

scripts/src/check.ts

@@ -13,6 +13,7 @@ interface CheckItem {
 const syntaxFiles = [
   "scripts/cli.ts",
   "scripts/src/check.ts",
+  "scripts/src/artifact-registry.ts",
   "scripts/src/code-queue.ts",
   "scripts/src/command.ts",
   "scripts/src/decision-center.ts",
@@ -220,6 +221,7 @@ export function runChecks(config: UniDeskConfig, options: CheckOptions = default
       fileItem("scripts/cli.ts"),
       fileItem("AGENTS.md"),
       fileItem("TEST.md"),
+      fileItem("docs/reference/artifact-registry.md"),
       fileItem("docker-compose.yml"),
       fileItem("src/components/backend-core/Cargo.toml"),
       fileItem("src/components/backend-core/Cargo.lock"),
@@ -234,6 +236,7 @@ export function runChecks(config: UniDeskConfig, options: CheckOptions = default
       fileItem("src/components/microservices/code-queue-mgr/src/index.ts"),
       fileItem("scripts/src/deploy.ts"),
       fileItem("scripts/src/e2e.ts"),
+      fileItem("scripts/src/artifact-registry.ts"),
     );
   } else {
     items.push(skippedItem("files:required-entrypoints", "required file presence scan is opt-in", "--files or --full"));

scripts/src/help.ts

@@ -36,6 +36,7 @@ export function rootHelp(): unknown {
       { command: "decision show <id>", description: "Show one Decision Center record." },
       { command: "deploy check|plan|apply [--file deploy.json|--env dev|prod] [--service id] [--dry-run] [--force]", description: "Reconcile services from a repo+commit manifest; --env reads origin/master:deploy.json environments and can apply supported dev services." },
       { command: "dev-env validate|prewarm-images", description: "Validate D601 unidesk-dev guardrails or prewarm dev foundation images into native k3s containerd through a bounded async job." },
+      { command: "artifact-registry plan|render|status|health|install --dry-run", description: "Plan and inspect the D601 host-managed CNCF Distribution registry for future backend-core artifact CD; first-stage install is dry-run only." },
       { command: "schedule list|get|runs|run|delete", description: "Manage backend-core scheduled tasks and run history; schedule run <id> supports --wait-ms N." },
       { command: "schedule upsert-pgdata-backup [--time HH:MM] [--remote-base /SERVER_DATA/UNIDESK_PG_DATA]", description: "Create or update the daily PGDATA physical backup task that uploads monthly rotated archives to Baidu Netdisk." },
       { command: "codex deploy <commitId> [--provider-id D601] [--timeout-ms N]", description: "Compatibility wrapper for deploy apply --service code-queue with a temporary repo+commit manifest." },
@@ -244,6 +245,27 @@ function devEnvHelp(): unknown {
   };
 }
 
+function artifactRegistryHelp(): unknown {
+  return {
+    command: "artifact-registry plan|render|status|health|install",
+    output: "json",
+    usage: [
+      "bun scripts/cli.ts artifact-registry plan [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry render [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry status [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry health [--provider-id D601]",
+      "bun scripts/cli.ts artifact-registry install --dry-run [--provider-id D601]",
+    ],
+    description: "Manage the declaration, rendered files and readonly checks for the D601 host-managed CNCF Distribution artifact registry.",
+    boundary: [
+      "registry endpoint is D601 loopback 127.0.0.1:5000 only",
+      "service is host-managed by systemd + Docker Compose, not k3s-managed",
+      "first-stage install without --dry-run is rejected",
+      "status and health use provider-gateway Host SSH readonly checks",
+    ],
+  };
+}
+
 export function staticNamespaceHelp(args: string[]): unknown | null {
   const [top] = args;
   if (!args.slice(1).some(isHelpToken)) return null;
@@ -258,5 +280,6 @@ export function staticNamespaceHelp(args: string[]): unknown | null {
   if (top === "network") return networkHelp();
   if (top === "e2e") return e2eHelp();
   if (top === "dev-env") return devEnvHelp();
+  if (top === "artifact-registry") return artifactRegistryHelp();
   return null;
 }