Feature request: true recurring Google Tasks (single task with recurrence metadata)

[TheRealJamesRussell]

Problem

gog tasks add --repeat currently requires --repeat-count or --repeat-until, which creates many separate tasks up front.

For users who want an actual recurring task in Google Tasks, this is noisy and error-prone. It can flood task lists when someone expects one repeating item.

Requested behavior

Add support for creating a true recurring task that appears as a single task and rolls forward per recurrence settings, matching Google Tasks UI behavior.

Suggested UX

Examples:

• gog tasks add <listId> --title "Monthly recurring task" --due 2026-03-04 --recur monthly
• gog tasks add <listId> --title "..." --due 2026-03-04 --recur "FREQ=MONTHLY;INTERVAL=1"

Potential options:

• --recur daily|weekly|monthly|yearly
• --recur-rrule <RRULE> for advanced users
• keep current --repeat-count/--repeat-until behavior as a separate materialize-tasks mode

Why this helps

• Prevents accidental task duplication
• Aligns CLI behavior with user expectations from Google Tasks
• Better for productivity workflows where only next occurrence should be active

Happy to test and provide more examples if useful.