Allow scheduling sessions without end time

[GestureGraphix]

Summary

• make session end times optional in shared types and role context logic so sessions can be scheduled with only a start
• update athlete training and coach dashboard flows to remove end time inputs and gracefully display sessions without an end
• adjust formatters and normalization helpers to handle missing end timestamps across the app

Testing

• npm run lint

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https://chatgpt.com/codex/tasks/task_e_6906a619249c8323902410fdcb667550

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Project	Deployment	Preview	Comments	Updated (UTC)
locker	Ready	Preview	Comment	Nov 2, 2025 0:40am

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Clearing end time in edits is impossible

After the UI changes, athletes and coaches can no longer supply endAt when editing a session; however, the update path still retains the previous endAt by default (const normalizedEndAt = endAtISO || existingSession?.endAt). This means rescheduling an existing session to a new start time keeps its old end timestamp, potentially leaving the session ending before it starts or on the wrong day, and there is no way for a user to remove or correct it through the UI. Consider dropping the existing endAt when no new value is provided so that edits don’t preserve stale end times.

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