Sales subscriptions now show a clear warning when an overdue subscription is at risk of being automatically closed if it is not billed soon. This helps teams act earlier to prevent unintended subscription closures and potential revenue loss.

This commit adds an alert-info warning that the subscription is overdue and will be automatically closed by the system if it is not billed soon. Technically speaking, when the subscription has the `next_invoice_date` older than its `end_date` AND it is currently with in-progress state, this alert will be shown.

task-4243863

The spreadsheet interface has been reorganized to make common actions easier to find and the top bar clearer to use. Users now see collaboration presence more directly, while saving and sharing-related options are placed in more intuitive locations, improving day-to-day spreadsheet editing.

Task: 4812824

This update advances the Colombian electronic invoicing and DIAN integration setup based on the current specification work. It improves configuration, demo data, invoice screens, templates, and supporting validation logic so Colombian localization flows can be tested and prepared more reliably.

implemented points 1-3 in spec