Event Changes Request - Coordination Form

Provide a form for coordinator to request changes to an event (vide image).

Key Tasks:

• Create a jinja template for the button of request change (coordinator only). Remember to use the logic of token codes that expires once screen is accessed.

• Implement form logic (inputs, validations), I guess here we just need to keep the same flow that exists, we just want to make sure when the status is 'changes-requested' the fields are editable.

• Update event status. Update when coordinator submit request (jinja template) and when user finish edition (probably no changes needed in frontend).

Acceptance Criteria:

• Form submission successfully updates event details/status.
• Teacher is notified about the change request.
• Event statuses accurately reflect the current stage:
• • Coordinator submission → Status requested-changes
• • User completion → Status requested