Today Plan shows incorrect workout on rest days and misses multiple workouts

[hdkiller]

📝 Description

The "Today Plan" section on the Dashboard behaves incorrectly in two scenarios:

1. Rest Days / No Workout: If there is no workout scheduled for today, it often displays the next upcoming workout (e.g., tomorrow's) instead of showing a "Rest Day" or empty state.
2. Multiple Workouts: If a user has multiple workouts planned for the same day (e.g., a morning run and evening gym session), the component fails to display all of them, likely showing only one.

👣 Steps to Reproduce

Scenario A (Rest Day Bug):

1. Ensure "Today" has no planned workouts in the calendar.
2. Ensure "Tomorrow" (or a future date) does have a planned workout.
3. Navigate to /dashboard.
4. Observe the "Today Plan" section displaying the future workout as if it were for today.

Scenario B (Multiple Workouts):

1. Schedule two distinct workouts for "Today".
2. Navigate to /dashboard.
3. Observe that only one workout is visible in the "Today Plan" section.

😯 Expected Behavior

1. Rest Days: The component should clearly indicate "Rest Day" or "No workouts planned" if the current day has no sessions.
2. Multiple Workouts: The component should support displaying a list or carousel of all workouts scheduled for the current day.

🐛 Actual Behavior

1. Future workouts bleed into "Today" when today is empty.
2. Only a single workout is rendered even when multiple exist.

💻 Environment

• Component: Dashboard "Today Plan" widget
• Area: Frontend logic (likely date filtering or query issue)

[github-actions]

🤖 Hi @hdkiller, I've received your request, and I'm working on it now! You can track my progress in the logs for more details.

[hdkiller]

This depends on #89

[hdkiller]

Resolved by supporting multiple planned workouts in the Dashboard 'Today Plan' widget. Also improved rest day visibility. Standardized rest days are now correctly handled alongside active sessions. Fixes #118 and completes part of #89.