feat: release 2.7.0

changelogs/2.7.0.md

@@ -1,17 +1,24 @@
+# 2.7.0
+
+- Before side effects, check the exact server version and install/restart once when it differs; this includes older and newer server versions. A silent preflight health or network failure leaves the current command running without a notice. Install, resolve, or spawn failures show a gray availability notice, then continue the current command.
+- Trust revocation and status checks do not accidentally re-grant trust.
+- Includes the 2.7.0 release-candidate features and fixes listed below.
+- Auto builds always use CNB Buildpacks with no BuildKit fallback; ordinary Dockerfile builds retain the BuildKit path. Live CNB Kubernetes Job execution and registry push remain unverified.
+
 # 2.7.0-rc3
 
 - Use source-first Enquirer Select prompts with conditional image, CNB, or template choices, plus app-path AutoComplete.
 - Render `kuber init` and `kuber add` previews as YAML Snippets, preserving literal existing `name: ...` lines; omit blank optional values and default replicas to 1.
 - Use real BasicAuth login, handle ambiguous trust identities safely, and fix type resolution.
 
-# 2.7.0-rc2
+# 2.7.0-rc2 (historical)
 
-- Simplify the cross-platform passive updater with explicit inherited environment and `process.execPath`, a bounded wait for the install outcome before CLI exit, and no TTY workaround or external timeout helper.
+- Earlier release-candidate passive updater implementation; superseded by the stable pre-command exact server-version check above.
 - Show aggregate context-upload progress in an `Uploading context` child task, deduplicating shared blobs and accounting for resumed uploads.
 - Support `build: auto:<GitHub HTTPS .cnb URI>` with optional `#sha256=<hex>` pinning. The real `kilterset/bun` 1.0.0 package was fetched and validated for Linux ARM64; its architecture mismatch was correctly rejected for AMD64.
 - Live CNB Kubernetes Job execution and registry push remain unverified.
 
-# 2.7.0-rc1
+# 2.7.0-rc1 (historical)
 
 ## Added
 
@@ -25,7 +32,7 @@
 
 - Begin generated Compose files with `managedBy: kuber # See https://npmx.dev/@dmgnr/kuber for documentation.` and accept the marker in kuber's Compose schema.
 - Show aggregate context-upload bytes and percentage as a separate task during `kuber up`, deduplicating shared blobs across workspaces and accounting for resumed uploads.
-- Simplify the passive updater to launch the current Bun executable with the inherited runtime environment, without Linux terminal helpers or an external `timeout` command. Wait for the bounded install outcome and its success or available-version notice before CLI exit; suppress automatic installs in tests and source-tree development.
+- Historical passive updater implementation, superseded by the stable pre-command exact server-version check above.
 
 ## Fixed
 

command/main.ts

@@ -37,7 +37,7 @@ function cloneCommand<T extends object>(command: T): T {
 export const main = defineCommand({
   meta: {
     name: "kuber",
-    version: "2.7.0-rc3",
+    version: "2.7.0",
     description: "Docker Compose -> K8s translation layer",
   },
   args: {

command/trust.ts

@@ -105,7 +105,10 @@ export const trust = defineCommand({
       },
     }),
   },
-  async run() {
+  async run({ args }) {
+    // citty runs a command's handler after its selected subcommand handler.
+    // Only a bare `trust` invocation has no positional arguments here.
+    if (args._.length > 0) return;
     await grantTrust(await current());
   },
 });

index.ts

@@ -5,10 +5,16 @@ import { initializeCompletion, main } from "./command/main";
 import { provideContext } from "./lib/context";
 import { extractConfigArgument } from "./lib/config";
 import { formatUnknownError, wrapCommandErrors } from "./lib/error";
-import { waitForVersionUpdate } from "./lib/version-update";
+import { preflightVersion, propagateCommandExit } from "./lib/version-update";
 
 async function run() {
-  const { configPath, rawArgs } = extractConfigArgument(process.argv.slice(2));
+  const originalArgs = process.argv.slice(2);
+  const replay = await preflightVersion(originalArgs);
+  if (replay) {
+    propagateCommandExit(replay);
+    return;
+  }
+  const { configPath, rawArgs } = extractConfigArgument(originalArgs);
   // citty resolves every preceding lazy command while looking up an alias.
   if (rawArgs[0] === "fuck") rawArgs[0] = "rollback";
   if (
@@ -36,9 +42,7 @@ async function run() {
   await provideContext(() => cli({ rawArgs }), configPath);
 }
 
-run()
+run().catch((e) => {
-  .catch((e) => {
   console.error(formatUnknownError(e));
   process.exitCode = 1;
-  })
+});
-  .finally(waitForVersionUpdate);

lib/api.ts

@@ -2,7 +2,6 @@ import { KUBER_API_BASE_URL } from "../const";
 import type { ApiProblemDetails } from "../shared/api";
 import { KUBER_VERSION_HEADER } from "../shared/version";
 import { readSession, type KuberSession } from "./session";
-import { observeServerVersion } from "./version-update";
 
 export type { ApiProblemDetails } from "../shared/api";
 
@@ -195,9 +194,7 @@ async function sendRequest(
     },
   );
   try {
-    (options.onServerVersion ?? observeServerVersion)(
+    options.onServerVersion?.(response.headers.get(KUBER_VERSION_HEADER));
-      response.headers.get(KUBER_VERSION_HEADER),
-    );
   } catch {
     // Version discovery must never interrupt an API request.
   }

lib/version-update.ts

@@ -1,4 +1,8 @@
 import { KUBER_VERSION } from "../shared/version";
+import { spawn as spawnProcess } from "node:child_process";
+import { join } from "node:path";
+import { KUBER_API_BASE_URL } from "../const";
+import { extractConfigArgument } from "./config";
 
 type SemVer = {
   major: bigint;
@@ -146,7 +150,12 @@ export function createVersionObserver({
 } = {}): (version: string | null) => void {
   let attempted = false;
   return (version) => {
-    if (attempted || !version || compareVersions(version, currentVersion) !== 1)
+    if (
+      attempted ||
+      !version ||
+      !parseVersion(version) ||
+      version === currentVersion
+    )
       return;
     attempted = true;
     // Defer install work beyond the response headers; never block body consumption.
@@ -182,3 +191,213 @@ export function createVersionObserver({
 }
 
 export const observeServerVersion = createVersionObserver();
+
+export const VERSION_REEXEC_MARKER = "KUBER_VERSION_REEXEC";
+export type CommandExit = {
+  code: number | null;
+  signal: NodeJS.Signals | null;
+};
+
+/** Only startup may install: normal responses must never replay a running command. */
+export function needsVersionPreflight(args: string[]): boolean {
+  if (args.some((arg) => ["--help", "-h", "--version", "-v"].includes(arg)))
+    return false;
+  const { rawArgs } = extractConfigArgument(args);
+  const [command, subcommand] = rawArgs;
+  if (
+    !command ||
+    command.startsWith("-") ||
+    [
+      "complete",
+      "completion",
+      "export",
+      "add",
+      "ui",
+      "logout",
+      "whoami",
+    ].includes(command)
+  )
+    return false;
+  if (["db", "s3"].includes(command) && subcommand === "ls") return false;
+  return true;
+}
+
+/** Capture only small administrative outputs, with a deadline and byte bound. */
+async function capture(argv: string[]): Promise<string | undefined> {
+  return new Promise((resolve) => {
+    let output = "";
+    let settled = false;
+    const finish = (value?: string) => {
+      if (settled) return;
+      settled = true;
+      clearTimeout(timer);
+      resolve(value);
+    };
+    const child = spawnProcess(argv[0]!, argv.slice(1), {
+      stdio: ["ignore", "pipe", "ignore"],
+      env: process.env,
+    });
+    const timer = setTimeout(() => {
+      child.kill("SIGKILL");
+      finish();
+    }, 5_000);
+    child.stdout.on("data", (chunk: Buffer) => {
+      output += chunk.toString();
+      if (output.length > 4096) {
+        child.kill("SIGKILL");
+        finish();
+      }
+    });
+    child.on("error", () => finish());
+    child.on("close", (code) => finish(code === 0 ? output.trim() : undefined));
+  });
+}
+
+export async function resolveInstalledVersion(
+  version: string,
+  run = capture,
+): Promise<string | undefined> {
+  const bin = await run([process.execPath, "pm", "bin", "-g"]);
+  if (!bin) return;
+  const executable = join(bin, "kuber");
+  if ((await run([executable, "--version"])) !== version) return;
+  return executable;
+}
+
+export async function rerunCommand(
+  executable: string,
+  args: string[],
+  onStarted: () => void = () => {},
+): Promise<CommandExit> {
+  return new Promise((resolve, reject) => {
+    const child = spawnProcess(executable, args, {
+      cwd: process.cwd(),
+      stdio: "inherit",
+      env: { ...process.env, [VERSION_REEXEC_MARKER]: "1" },
+    });
+    child.once("spawn", onStarted);
+    const signals: NodeJS.Signals[] = [
+      "SIGINT",
+      "SIGTERM",
+      "SIGHUP",
+      "SIGQUIT",
+    ];
+    const handlers = signals.map((signal) => {
+      const handler = () => {
+        child.kill(signal);
+      };
+      process.on(signal, handler);
+      return handler;
+    });
+    const cleanup = () =>
+      signals.forEach((signal, index) => {
+        process.off(signal, handlers[index]!);
+      });
+    child.on("error", (error) => {
+      cleanup();
+      reject(error);
+    });
+    child.on("close", (code, signal) => {
+      cleanup();
+      resolve({ code, signal });
+    });
+  });
+}
+
+export function propagateCommandExit(result: CommandExit): void {
+  if (result.signal) {
+    process.kill(process.pid, result.signal);
+    return;
+  }
+  process.exitCode = result.code ?? 1;
+}
+
+type PreflightDependencies = {
+  currentVersion?: string;
+  env?: NodeJS.ProcessEnv;
+  fetch?: typeof fetch;
+  runner?: VersionInstallRunner;
+  resolveExecutable?: typeof resolveInstalledVersion;
+  rerun?: typeof rerunCommand;
+  report?: (line: string) => void;
+  timeoutMs?: number;
+};
+
+/** Run before config imports, session reads, lazy command resolution, or hooks. */
+export async function preflightVersion(
+  args: string[],
+  dependencies: PreflightDependencies = {},
+): Promise<CommandExit | undefined> {
+  const env = dependencies.env ?? process.env;
+  if (env[VERSION_REEXEC_MARKER] || !needsVersionPreflight(args)) return;
+  // Source/test invocations must never change the user's global installation.
+  if (
+    !dependencies.runner &&
+    (env.NODE_ENV === "test" ||
+      env.NODE_ENV === "development" ||
+      process.argv[1]?.endsWith(".ts"))
+  )
+    return;
+  const controller = new AbortController();
+  let deadline: ReturnType<typeof setTimeout> | undefined;
+  let version: string | null;
+  try {
+    const response = await Promise.race([
+      (dependencies.fetch ?? fetch)(`${KUBER_API_BASE_URL}/health`, {
+        method: "GET",
+        signal: controller.signal,
+        redirect: "error",
+      }),
+      new Promise<never>((_, reject) => {
+        deadline = setTimeout(() => {
+          controller.abort();
+          reject(new Error("Version preflight timed out"));
+        }, dependencies.timeoutMs ?? 3_000);
+      }),
+    ]);
+    version = response.headers.get("X-Kuber-Version");
+    void response.body?.cancel().catch(() => {});
+  } catch {
+    return;
+  } finally {
+    clearTimeout(deadline);
+  }
+  if (
+    !version ||
+    !parseVersion(version) ||
+    version === (dependencies.currentVersion ?? KUBER_VERSION)
+  )
+    return;
+  const report = (success: boolean) => {
+    try {
+      (dependencies.report ?? reportToStderr)(
+        gray(
+          `+ ${success ? "Updated to " : "New version available: "}${version}`,
+        ),
+      );
+    } catch {}
+  };
+  let executable: string | undefined;
+  try {
+    if (await (dependencies.runner ?? installVersion)(version))
+      executable = await (
+        dependencies.resolveExecutable ?? resolveInstalledVersion
+      )(version);
+  } catch {}
+  if (!executable) {
+    report(false);
+    return;
+  }
+  // A spawn failure happens before any child handler can run; safely continue here.
+  let replay: Promise<CommandExit>;
+  try {
+    replay = (dependencies.rerun ?? rerunCommand)(executable, args, () =>
+      report(true),
+    );
+    const result = await replay;
+    return result;
+  } catch {
+    report(false);
+    return;
+  }
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@dmgnr/kuber",
-  "version": "2.7.0-rc3",
+  "version": "2.7.0",
   "description": "Docker Compose to Kubernetes translation layer",
   "bin": {
     "kuber": "dist/index.js"

tests/command/module-graph.test.ts

@@ -14,9 +14,11 @@ describe("CLI module graph", () => {
     expect(new TextDecoder().decode(probe.stdout)).toContain("USAGE");
   });
 
-  test("production build retains the passive updater's runtime environment guard", () => {
+  test("production build retains the startup updater's runtime environment guard", () => {
     const root = join(import.meta.dir, "../..");
-    const { scripts } = JSON.parse(readFileSync(join(root, "package.json"), "utf8"));
+    const { scripts } = JSON.parse(
+      readFileSync(join(root, "package.json"), "utf8"),
+    );
     const args = (scripts.build as string).split(/\s+/);
     expect(args).toContain("--env");
     expect(args[args.indexOf("--env") + 1]).toBe("disable");
@@ -31,8 +33,10 @@ describe("CLI module graph", () => {
       expect(new TextDecoder().decode(build.stderr)).toBe("");
       expect(build.exitCode).toBe(0);
       const bundle = readFileSync(join(outdir, "index.js"), "utf8");
-      expect(bundle).toMatch(/process\.env\.NODE_ENV\s*===\s*["']test["']/);
+      expect(bundle).toContain("NODE_ENV");
-      expect(bundle).toMatch(/process\.env\.NODE_ENV\s*===\s*["']development["']/);
+      expect(bundle).toContain('"development"');
+      expect(bundle).toContain('"test"');
+      expect(bundle).toContain("KUBER_VERSION_REEXEC");
     } finally {
       rmSync(outdir, { recursive: true, force: true });
     }

tests/command/trust.test.ts

@@ -1,8 +1,14 @@
 import { afterEach, describe, expect, spyOn, test } from "bun:test";
 import { rm } from "node:fs/promises";
+import { runCommand } from "citty";
 import { KuberApiError, type ApiRequestInit } from "../../lib/api";
 import { getTrustPath, readTrust, updateTrust } from "../../lib/trust";
-import { grantTrust, revokeTrust, statusTrust } from "../../command/trust";
+import {
+  grantTrust,
+  revokeTrust,
+  statusTrust,
+  trust,
+} from "../../command/trust";
 
 const originalConfig = process.env.XDG_CONFIG_HOME;
 const identity = { project: "demo", fingerprint: "a".repeat(64) };
@@ -28,6 +34,31 @@ function requester(
 }
 
 describe("trust command", () => {
+  test("citty dispatch of bare trust runs the parent grant handler", async () => {
+    await expect(runCommand(trust, { rawArgs: [] })).rejects.toThrow();
+  });
+
+  test.each(["status", "revoke"])(
+    "citty dispatch of %s does not run the parent grant handler",
+    async (subcommand) => {
+      const command = {
+        ...trust,
+        subCommands: Object.fromEntries(
+          Object.entries(trust.subCommands!).map(([name, child]) => [
+            name,
+            { ...child, run: async () => {} },
+          ]),
+        ),
+      };
+
+      // Without a provided app context, a parent grant would reject in
+      // current(). Successful dispatch proves citty did not grant afterward.
+      await expect(
+        runCommand(command, { rawArgs: [subcommand] }),
+      ).resolves.toBeDefined();
+    },
+  );
+
   test("grants, reports, and revokes the current namespace fingerprint", async () => {
     process.env.XDG_CONFIG_HOME = `/tmp/kuber-trust-command-${crypto.randomUUID()}`;
     const calls: Array<{ path: string; init?: ApiRequestInit }> = [];

tests/lib/version-update-process.test.ts

@@ -1,62 +1,326 @@
 import { expect, test } from "bun:test";
+import { chmod, mkdtemp, rm, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import {
+  needsVersionPreflight,
+  preflightVersion,
+  resolveInstalledVersion,
+} from "../../lib/version-update";
 
 const updaterUrl = new URL("../../lib/version-update.ts", import.meta.url).href;
 const entryUrl = new URL("../../index.ts", import.meta.url).href;
 const mainUrl = new URL("../../command/main.ts", import.meta.url).href;
+const contextUrl = new URL("../../lib/context.ts", import.meta.url).href;
 const errorUrl = new URL("../../lib/error.ts", import.meta.url).href;
 
-test.each([
+test("replayed command receives parent signals and preserves its resulting status", async () => {
-  ["success", "return true", "+ Updated to 2.7.0"],
+  const cwd = await mkdtemp(join(tmpdir(), "kuber-version-signal-"));
-  ["command error", "return true", "+ Updated to 2.7.0"],
+  try {
-  ["failure", "throw new Error('offline')", "+ New version available: 2.7.0"],
+    const executable = join(cwd, "kuber");
-  [
+    await writeFile(
-    "timeout",
+      executable,
-    "return await installVersion(version, () => ({ exited: new Promise(() => {}), kill: () => {} }), 1)",
+      `#!${process.execPath}\nprocess.on('SIGTERM', () => process.exit(23)); console.log('ready'); setInterval(() => {}, 1000);`,
-    "+ New version available: 2.7.0",
+    );
-  ],
+    await chmod(executable, 0o755);
-])(
+    const script = `const {rerunCommand,propagateCommandExit} = await import(${JSON.stringify(updaterUrl)}); propagateCommandExit(await rerunCommand(${JSON.stringify(executable)},[]));`;
-  "CLI waits for a %s update and preserves its exit status",
+    const child = Bun.spawn([process.execPath, "-e", script], {
-  async (_name, outcome, message) => {
+      cwd,
-    const script = `
-    import { mock } from "bun:test";
-    const { createVersionObserver, installVersion } = await import(${JSON.stringify(updaterUrl)});
-    const observe = createVersionObserver({ currentVersion: "2.6.1", runner: async (version) => {
-      if (${JSON.stringify(_name)} !== "timeout") await new Promise(resolve => setTimeout(resolve, 80));
-      ${outcome};
-    }});
-    mock.module("citty", () => ({ createMain: () => async () => {
-      observe("2.7.0");
-      observe("2.8.0");
-      if (${JSON.stringify(_name)} === "command error") throw new Error("command failed");
-      process.exitCode = 7;
-    }}));
-    mock.module(${JSON.stringify(mainUrl)}, () => ({ main: {}, initializeCompletion: async () => {} }));
-    mock.module(${JSON.stringify(errorUrl)}, () => ({ formatUnknownError: String, wrapCommandErrors: () => {} }));
-    await import(${JSON.stringify(entryUrl)});
-  `;
-    const started = Date.now();
-    const child = Bun.spawn([process.execPath, "-e", script, "login"], {
       stdin: "ignore",
       stdout: "pipe",
       stderr: "pipe",
     });
-    const timer = setTimeout(() => child.kill(), 5_000);
+    const timer = setTimeout(() => child.kill("SIGKILL"), 5_000);
     try {
-      const [code, stdout, stderr] = await Promise.all([
+      const reader = child.stdout.getReader();
+      const first = await reader.read();
+      expect(new TextDecoder().decode(first.value)).toContain("ready");
+      child.kill("SIGTERM");
+      expect(await child.exited).toBe(23);
+      expect(await new Response(child.stderr).text()).toBe("");
+      reader.releaseLock();
+    } finally {
+      clearTimeout(timer);
+    }
+  } finally {
+    await rm(cwd, { recursive: true, force: true });
+  }
+}, 10_000);
+
+test("packaged CLI preflights, installs and replays before importing a user config", async () => {
+  const cwd = await mkdtemp(join(tmpdir(), "kuber-packaged-version-"));
+  try {
+    const bundle = join(cwd, "index.js");
+    const built = await Bun.build({
+      entrypoints: [new URL("../../index.ts", import.meta.url).pathname],
+      target: "bun",
+      outdir: cwd,
+    });
+    expect(built.success).toBe(true);
+    const executable = join(cwd, "kuber");
+    await writeFile(
+      executable,
+      `#!${process.execPath}\nif (process.argv[2] === '--version') {console.log('1.0.0');} else {console.log(JSON.stringify({args:process.argv.slice(2),marker:process.env.KUBER_VERSION_REEXEC}));process.exitCode=19;}`,
+    );
+    await chmod(executable, 0o755);
+    const preload = join(cwd, "preload.ts");
+    await writeFile(
+      preload,
+      `
+      import {mock} from 'bun:test';
+      import {spawn as realSpawn} from 'node:child_process';
+      const spawn = realSpawn;
+      mock.module('node:child_process', () => ({spawn: (exe,args,options) => {
+        if (args.join(' ') === 'pm bin -g') return spawn(process.execPath,['-e',${JSON.stringify(`console.log(${JSON.stringify(cwd)})`)}],options);
+        return spawn(exe,args,options);
+      }}));
+      const originalSpawn = Bun.spawn;
+      Bun.spawn = (args,options) => {
+        if (args[1] === 'i' && args[2] === '-g') {console.error('INSTALL:' + args.at(-1)); return {exited:Promise.resolve(0),kill(){}};}
+        return originalSpawn(args,options);
+      };
+      globalThis.fetch = async (url,options) => {
+        console.error('HEALTH:' + url + ':' + options.method + ':' + !!options.headers);
+        return new Response('',{headers:{'X-Kuber-Version':'1.0.0'}});
+      };
+    `,
+    );
+    await writeFile(
+      join(cwd, "custom.ts"),
+      "throw Error('user config ran before replay');",
+    );
+    const child = Bun.spawn(
+      [
+        process.execPath,
+        "--preload",
+        preload,
+        bundle,
+        "--config",
+        "custom.ts",
+        "fuck",
+      ],
+      {
+        cwd,
+        stdin: "ignore",
+        stdout: "pipe",
+        stderr: "pipe",
+        env: {
+          ...process.env,
+          NODE_ENV: "production",
+          KUBER_VERSION_REEXEC: "",
+        },
+      },
+    );
+    const [code, out, err] = await Promise.all([
       child.exited,
       new Response(child.stdout).text(),
       new Response(child.stderr).text(),
     ]);
-      expect(code).toBe(_name === "command error" ? 1 : 7);
+    expect({ code, out, err }).toMatchObject({ code: 19 });
-      expect(Date.now() - started).toBeGreaterThanOrEqual(
+    expect(JSON.parse(out)).toEqual({
-        _name === "timeout" ? 900 : 70,
+      args: ["--config", "custom.ts", "fuck"],
-      );
+      marker: "1",
-      expect(stdout).toBe("");
+    });
-      expect(stderr).toBe(
+    expect(err).toBe(
-        `${_name === "command error" ? "Error: command failed\n" : ""}\x1b[90m${message}\x1b[0m\n`,
+      "HEALTH:https://kuber.astrxl.dev/api/v2/health:GET:false\nINSTALL:@dmgnr/[email protected]\n\x1b[90m+ Updated to 1.0.0\x1b[0m\n",
     );
   } finally {
-      clearTimeout(timer);
+    await rm(cwd, { recursive: true, force: true });
+  }
+}, 20_000);
+
+test("offline and informational commands skip the health check", () => {
+  for (const args of [
+    [],
+    ["complete"],
+    ["--version"],
+    ["up", "-h"],
+    ["users", "--help"],
+    ["exec", "-v"],
+    ["export"],
+    ["add"],
+    ["db", "ls"],
+    ["s3", "ls"],
+    ["ui"],
+  ])
+    expect(needsVersionPreflight(args)).toBe(false);
+  for (const args of [
+    ["login"],
+    ["init"],
+    ["exec"],
+    ["ci"],
+    ["up"],
+    ["down"],
+    ["trust"],
+    ["users"],
+    ["--config", "custom.ts", "fuck"],
+  ])
+    expect(needsVersionPreflight(args)).toBe(true);
+});
+
+test("preflight has a bounded deadline even if a fetch seam ignores abort", async () => {
+  let signal: AbortSignal | null | undefined;
+  expect(
+    await preflightVersion(["up"], {
+      runner: async () => {
+        throw Error("unexpected install");
+      },
+      fetch: ((_url: unknown, options: RequestInit) => {
+        signal = options.signal;
+        return new Promise(() => {});
+      }) as typeof fetch,
+      timeoutMs: 5,
+    }),
+  ).toBeUndefined();
+  expect(signal?.aborted).toBe(true);
+});
+
+test("global resolver uses Bun's configured bin and verifies the exact version", async () => {
+  for (const reported of [undefined, "1.0.0", "2.7.0+other", "2.7.0"]) {
+    const calls: string[][] = [];
+    const result = await resolveInstalledVersion("2.7.0", async (args) => {
+      calls.push(args);
+      return calls.length === 1 ? "/custom/global/bin" : reported;
+    });
+    expect(calls).toEqual([
+      [process.execPath, "pm", "bin", "-g"],
+      ["/custom/global/bin/kuber", "--version"],
+    ]);
+    expect(result).toBe(
+      reported === "2.7.0" ? "/custom/global/bin/kuber" : undefined,
+    );
+  }
+});
+
+test.each([
+  "success",
+  "older",
+  "metadata",
+  "failure",
+  "rejection",
+  "wrong executable",
+  "spawn failure",
+  "equal",
+  "invalid",
+  "absent",
+  "unavailable",
+  "marker",
+  "signal",
+])(
+  "startup synchronization: %s",
+  async (scenario) => {
+    const cwd = await mkdtemp(join(tmpdir(), "kuber-version-process-"));
+    const executable = join(cwd, "kuber");
+    const version =
+      scenario === "older"
+        ? "1.0.0"
+        : scenario === "metadata"
+          ? "2.6.1+server"
+          : scenario === "equal"
+            ? "2.6.1"
+            : scenario === "invalid"
+              ? "v2.7.0"
+              : "2.7.0";
+    const success = ["success", "older", "metadata", "signal"].includes(
+      scenario,
+    );
+    try {
+      await writeFile(
+        executable,
+        `#!${process.execPath}\n
+        const { preflightVersion } = await import(${JSON.stringify(updaterUrl)});
+        await preflightVersion(process.argv.slice(2), { runner: async () => { throw Error('recursive install'); } });
+        console.log('child:' + JSON.stringify({args:process.argv.slice(2),cwd:process.cwd(),marker:process.env.KUBER_VERSION_REEXEC,path:process.env.PATH,custom:process.env.KUBER_TEST_CUSTOM}));
+        ${scenario === "signal" ? "process.kill(process.pid, 'SIGTERM')" : "process.exitCode = 17"};
+      `,
+      );
+      await chmod(executable, 0o755);
+      const script = `
+        import { mock } from 'bun:test';
+        const original = await import(${JSON.stringify(updaterUrl)});
+        const preflight = original.preflightVersion;
+        mock.module(${JSON.stringify(updaterUrl)}, () => ({ ...original,
+          preflightVersion: args => preflight(args, {
+            currentVersion: '2.6.1',
+            fetch: async (url, options) => {
+              console.log('health:' + url + ':' + options.method + ':' + !!options.headers);
+              if (${JSON.stringify(scenario)} === 'unavailable') throw Error('offline');
+              return new Response('', {headers:${scenario === "absent" ? "{}" : `{'X-Kuber-Version':${JSON.stringify(version)}}`}});
+            },
+            runner: async version => { console.log('install:' + version); ${scenario === "rejection" ? "throw Error('failed')" : `return ${scenario !== "failure"}`}; },
+            resolveExecutable: async version => {console.log('verify:' + version); return ${scenario === "wrong executable" ? "undefined" : JSON.stringify(scenario === "spawn failure" ? join(cwd, "missing") : executable)};},
+          })
+        }));
+        mock.module(${JSON.stringify(mainUrl)}, () => ({main:{run:({rawArgs}) => {console.log('mutate:' + JSON.stringify(rawArgs)); process.exitCode = 7;}},initializeCompletion:async () => {}}));
+        mock.module(${JSON.stringify(contextUrl)}, () => ({provideContext:async (run, config) => {console.log('context:' + config); await run();}}));
+        mock.module(${JSON.stringify(errorUrl)}, () => ({formatUnknownError:String,wrapCommandErrors:() => {}}));
+        process.argv = [process.execPath, 'test-cli.js', '--config', 'custom.ts', 'fuck'];
+        await import(${JSON.stringify(entryUrl)});
+      `;
+      const child = Bun.spawn([process.execPath, "-e", script], {
+        cwd,
+        stdin: "ignore",
+        stdout: "pipe",
+        stderr: "pipe",
+        env: {
+          ...process.env,
+          KUBER_TEST_CUSTOM: "preserved",
+          KUBER_VERSION_REEXEC: scenario === "marker" ? "1" : "",
+        },
+      });
+      const [code, out, err] = await Promise.all([
+        child.exited,
+        new Response(child.stdout).text(),
+        new Response(child.stderr).text(),
+      ]);
+      if (success) {
+        expect(code).toBe(scenario === "signal" ? 143 : 17);
+        expect(out).not.toContain("context:");
+        expect(out).not.toContain("mutate:");
+        expect(out.split("child:")).toHaveLength(2);
+        const payload = JSON.parse(out.split("child:")[1]!);
+        expect(payload).toEqual({
+          args: ["--config", "custom.ts", "fuck"],
+          cwd,
+          marker: "1",
+          path: process.env.PATH,
+          custom: "preserved",
+        });
+        expect(err).toBe(`\x1b[90m+ Updated to ${version}\x1b[0m\n`);
+      } else {
+        expect({ code, out, err }).toMatchObject({ code: 7 });
+        expect(out.split("mutate:")).toHaveLength(2);
+        expect(out).toContain('context:custom.ts\nmutate:["rollback"]');
+        expect(out).not.toContain("child:");
+        expect(err).toBe(
+          [
+            "failure",
+            "rejection",
+            "wrong executable",
+            "spawn failure",
+          ].includes(scenario)
+            ? `\x1b[90m+ New version available: ${version}\x1b[0m\n`
+            : "",
+        );
+      }
+      expect(out.split("install:")).toHaveLength(
+        success ||
+          [
+            "failure",
+            "rejection",
+            "wrong executable",
+            "spawn failure",
+          ].includes(scenario)
+          ? 2
+          : 1,
+      );
+      if (scenario !== "marker")
+        expect(out).toStartWith(
+          "health:https://kuber.astrxl.dev/api/v2/health:GET:false\n",
+        );
+    } finally {
+      await rm(cwd, { recursive: true, force: true });
     }
   },
+  10_000,
 );

tests/lib/version-update.test.ts

@@ -118,7 +118,7 @@ describe("server version updates", () => {
     expect(signals).toEqual([undefined, "SIGKILL"]);
   });
 
-  test("ignores malformed, equal, and older headers without attempting an install", async () => {
+  test("ignores malformed and exactly equal headers without attempting an install", async () => {
     const runs: string[] = [];
     const lines: string[] = [];
     const observe = createVersionObserver({
@@ -129,15 +129,7 @@ describe("server version updates", () => {
       },
       report: (line) => lines.push(line),
     });
-    for (const version of [
+    for (const version of [null, "garbage", "2.6.1-rc3"]) observe(version);
-      null,
-      "garbage",
-      "2.6.1-rc3",
-      "2.6.0",
-      "2.6.1-rc2",
-      "2.6.1-rc3+build",
-    ])
-      observe(version);
     await tick();
     expect(runs).toEqual([]);
     expect(lines).toEqual([]);