fix(cli): clarify --tz help text for offset-less --at values

rrrrrredy · web-flow · commit 231b5a14d5d7 · 2026-06-14T12:34:10.000+08:00
Clarifies cron edit --at help after maintainer rebase and preserves the Gateway-host timezone wording for cron --tz help.

Validation:
- git diff --check
- node scripts/run-vitest.mjs src/cli/cron-cli.test.ts
- local Codex autoreview clean, no actionable findings

Co-authored-by: rrrrrredy &lt;rrrrrredy@users.noreply.github.com&gt;
diff --git a/src/cli/cron-cli.test.ts b/src/cli/cron-cli.test.ts
@@ -307,6 +307,7 @@ describe("cron cli", () => {
 
     expect(addCommand?.helpInformation()).toContain("Gateway host local timezone");
     expect(editCommand?.helpInformation()).toContain("Gateway host local timezone");
+    expect(editCommand?.helpInformation()).toMatch(/offset-less uses\s+--tz/);
   });
 
   it.each([
diff --git a/src/cli/cron-cli/register.cron-edit.ts b/src/cli/cron-cli/register.cron-edit.ts
@@ -87,7 +87,10 @@ export function registerCronEditCommand(cron: Command) {
       .option("--session-key <key>", "Set session key for job routing")
       .option("--clear-session-key", "Unset session key", false)
       .option("--wake <mode>", "Wake mode (now|next-heartbeat)")
-      .option("--at <when>", "Set one-shot time (ISO) or duration like 20m")
+      .option(
+        "--at <when>",
+        "Set one-shot time (ISO, offset-less uses --tz) or duration like 20m",
+      )
       .option("--every <duration>", "Set interval duration like 10m")
       .option("--cron <expr>", "Set cron expression")
       .option(
