Add someday task support and improve task creation UX

[jski21]

Summary

This PR adds support for "someday" tasks (tasks without dates) and improves the task creation experience by allowing users to create tasks directly from the Lists page with pre-selected list context.

Key Changes

• Someday task support: Tasks can now be created without a date by clearing the date field. These tasks appear in a "Someday" section within their list and don't appear on Today or Calendar views.

  • Added is_someday field to task creation payload
  • Date field is now optional (no longer required)
  • Added visual indicator explaining someday tasks

• Enhanced TaskForm component:

  • Added initialListId prop to pre-select a list when opening from the Lists page
  • Added "clear" button next to date field for easy someday task creation
  • Time field is now disabled when no date is set
  • Recurring checkbox is disabled when no date is set (recurring tasks require an anchor date)
  • Added useEffect hook to auto-disable recurring when date is cleared
  • Submit button now disabled when title is empty
  • Improved documentation with JSDoc comments on props

• Lists page improvements:

  • Added "+ Add task" button in the header to create tasks with the current list pre-selected
  • Task creation modal uses initialDate="" to create someday tasks by default
  • Modal styling matches existing dialogs (fixed overlay with responsive positioning)

• Removed quick-add from SomedaySection:

  • Removed the inline form for adding someday tasks from the SomedaySection component
  • Task creation is now centralized through the main "+ Add task" button

Implementation Details

• The date field now distinguishes between three states:
  • undefined → defaults to today
  • Empty string "" → intentionally blank (someday task)
  • ISO date string → specific date
• Recurring tasks are prevented from being created without a date via both UI disabling and validation in the submit handler
• The modal for task creation on the Lists page uses a fixed overlay with mobile-optimized styling (bottom sheet on mobile, centered on desktop)

https://claude.ai/code/session_01K9mt37i3VVxitgUjEpqSts

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Project	Deployment	Actions	Updated (UTC)
todo	Ready	Preview, Comment	Jun 5, 2026 10:13pm