[shawk08033]

Summary

Fixes #18632.

Fixed-time schedules run in the server timezone, but list/editor labels showed an unqualified wall-clock time (Daily at 16:31). A remote client can read that as its own local time.

This restores the timeZone field on ScheduledTaskListResult (as in #18653) and appends a short zone label — UTC, PDT, GMT+5:30 — instead of the full IANA name that overflowed the automations panel and led to revert #22230.

Scheduling behavior is unchanged; only labeling/display.

Evidence

Problem (accepted in #18632): the missing zone on the label is the bug, not the zone schedules run in.

Label format (from unit tests on this branch):

Case	Before	After
UTC server fixed-time	Daily at 16:31	Daily at 16:31 UTC
America/Los_Angeles	would have been full IANA in #18653	PDT / PST / GMT-7
Asia/Kolkata	full IANA	GMT+5:30 (or IST)
Older servers (no timeZone)	Daily at 09:00	unchanged
Interval / webhook	unchanged	unchanged

Surfaces updated: Settings scheduled-task rows, Run at editor, Thread Automations panel, mobile scheduled-task list/editor.

Checks run:

pnpm --filter t3 exec vp test run src/scheduledTasks/ScheduledTaskService.schedule.test.ts
→ 3 passed (includes new timeZone list/subscribe coverage)

pnpm --filter @t3tools/web exec vp test run --project unit \
  src/components/settings/scheduledTasksSettings.logic.test.ts
→ 20 passed (includes short-zone label regressions)

Browser tests:

PLAYWRIGHT_HOST_PLATFORM_OVERRIDE=ubuntu24.04-x64 \
  pnpm --filter @t3tools/web exec playwright install chromium

pnpm --filter @t3tools/web exec vp test run --project browser \
  src/components/chat/ThreadAutomationsPanel.permissions.browser.test.tsx
→ 4 passed

(Ubuntu 26.04 needs the host-platform override once to fetch the ubuntu24.04 Chromium build.)

Test plan

• On a UTC server with a fixed-time task, Settings → Scheduled tasks shows … at HH:MM UTC
• Thread Automations panel shows the same short zone
• Run at editor shows the short zone beside the time input
• Non-UTC server (e.g. America/Los_Angeles) shows PDT/PST/GMT-7, not America/Los_Angeles
• Interval and webhook rows are unchanged
• Automations panel row still fits without pushing “next …” off-screen

[shawk08033]

Before/after evidence image (local generation): short zone labels UTC/PDT instead of unqualified times or full IANA names.

Label examples from unit tests on this branch:

• Daily at 16:31 → Daily at 16:31 UTC (Etc/UTC)
• America/Los_Angeles → PDT (not America/Los_Angeles)
• Asia/Kolkata → GMT+5:30 (not full IANA)

[shawk08033]

Browser tests now green on this host after installing Playwright Chromium with:

PLAYWRIGHT_HOST_PLATFORM_OVERRIDE=ubuntu24.04-x64 pnpm --filter @t3tools/web exec playwright install chromium

pnpm --filter @t3tools/web exec vp test run --project browser \
  src/components/chat/ThreadAutomationsPanel.permissions.browser.test.tsx
→ 4 passed (includes short-zone label coverage)

Ubuntu 26.04 is outside Playwright 1.60’s official host matrix; the override downloads the ubuntu24.04-x64 build. Once cached, subsequent test runs do not need the override.

[macroscopeapp]

Approvability

Verdict: Approved at c01a227

Macroscope's review found this PR approvable — This is a backward-compatible scheduler-label fix: the server exposes its optional timezone and web/mobile clients append a short zone only for fixed-time schedules. Scheduling execution, interval/webhook labels, older-server behavior, and product defaults remain unchanged, with targeted tests covering the new metadata and formatting.

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