Migration: reminder_check.py → calendar todo

What's changing

Before	After
`scripts/reminder_check.py`	`skills/calendar/scripts/calendar.sh todo`
`reminders/active.md` (markdown table)	`calendars/tasks/*.ics` (RFC 5545 VTODO)
Local only, no sync	CalDAV sync to all devices via vdirsyncer
No native reminders	VALARM triggers on phone/desktop
Cron reads markdown	Cron reads .ics files

Prerequisites

calendar.sh todo add --dry-run works (tested in current session)
~/.openclaw/workspace/calendars/tasks/ directory exists (auto-created by todo add)
vdirsyncer has a cal/tasks pair configured
Live tests 8-12 from TESTING.md pass on the Linux machine

Step 1: Migrate pending reminders

Two items are pending in reminders/active.md:

SKILL_DIR=~/.openclaw/workspace/skills/calendar

$SKILL_DIR/scripts/calendar.sh todo add \
  --summary "跟进iui保险报销" \
  --due "2026-03-25" \
  --priority medium \
  --description "确认iui（人工授精）费用保险报销进度，避免过期"

$SKILL_DIR/scripts/calendar.sh todo add \
  --summary "打电话给progyny问iui报销" \
  --due "2026-04-04" \
  --priority medium \
  --description "询问iui报销相关事宜"

Verify:

$SKILL_DIR/scripts/calendar.sh todo list

Step 2: Set up cron

Ask the agent to set up a daily cron job via openclaw cron:

Set up a daily cron at 8:00 AM PST that runs: ~/.openclaw/workspace/skills/calendar/scripts/calendar.sh todo check and emails the output to mail@luyx.org with subject "📋 今日待办清单"

The old reminder_check.py cron in crontab.txt should be removed by the agent at the same time.

Step 3: Verify

todo list shows both migrated items
vdirsyncer sync completes without errors
Todos appear on phone/CalDAV client
Next morning's cron email arrives with the new format

Step 4: Clean up (optional, after confidence period)

After a few days of successful operation:

reminders/active.md — can be archived or deleted
scripts/reminder_check.py — can be removed
reminders/ directory — can be removed
Old cron entry in crontab.txt — should already be gone

Rollback

If something goes wrong, the old system is still intact:

reminders/active.md is unchanged
scripts/reminder_check.py still works
Re-add the old cron entry to restore the previous behavior

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