Restrict reminder component to /now view only

[Copilot]

The reminder component was consuming excessive screen real estate on week and day views, both of which already display dense content. Additionally, the reminder onboarding steps added unnecessary friction for new users.

Changes

View modifications:

• Removed reminder from week view header entirely
• Made reminder conditional in day view header via showReminder prop (defaults to false)
• Pass showReminder={true} in now view to display reminder

Onboarding:

• Removed 4 reminder setup steps (intro, configuration, success screens)
• Cleaned up step constants and exports

Implementation

// Day/Now shared header component
export const Header: FC<HeaderProps> = ({ showReminder = false }) => {
  const reminderRef = useRef<HTMLDivElement>(null);
  
  useReminderHotkey(
    showReminder ? () => reminderRef.current?.focus() : () => {},
    [reminderRef, showReminder],
  );

  return (
    <StyledHeaderRow>
      <StyledLeftGroup />
      {showReminder && <Reminder ref={reminderRef} />}
      <SelectView />
    </StyledHeaderRow>
  );
};

The hotkey handler is conditionally bound to avoid unnecessary event listener setup when the reminder is hidden.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>only render reminder on the /now view</issue_title>
<issue_description>### Priority

None

Feature Description

The reminder takes up a lot of real-estate, making it too noisy on the week and /day views, which both have a lot of other content already.

Update so that the reminder only appears on the /now view

Also remove the reminder steps from onboarding.

Use Case

This'll make the app more approachable for new users who aren't used to this component.

Removing the reminder step from onboarding will speed up onboarding for users

Additional Context

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes only render reminder on the /now view #1400

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[tyler-dane]

Closing in favor of #1402