This update introduces a new warning in the payroll system to alert HR regarding employees with four consecutive fixed-term contracts (CDD). Specifically, it flags employees who meet certain criteria related to contract durations and start dates, helping ensure compliance and accurate payroll calculations. This change addresses a previously identified issue with employee profiles.

This commit adds a new warning "4th consecutive fixed-term contract" It should show up any employee that answers to this condition :
	- Being in the fourth consecutive contract where they all are CDD (= contract type).
	- Each of the 3 firsts contracts must have a value higher than 3 months
	- The date delta between today and the start contract date of the first CDD must be smaller than 2 years, or, if set, the date delta between the start contract date of the first CDD and the end contract date of the 4th one. The warning lead to concerned employees profiles.

task-5421414

This update adds a new option to the invoice PDF legend, required by recent Argentinian regulations (RG 5762/2025). Users can now select 'Payment on informed CBU' or 'Operation Subject to Withholding' for the invoice legend, ensuring compliance with local tax requirements. This change is implemented within the accounting settings.

Before:
- There is only one option for the legend of the invoice PDF for Document type  'A' and 'M'.
- After ARCA's new regulation RG 5762/2025, we need to add one extra option 'Payment on informed CBU', for legend.

After:
- Now we have two options for the invoice PDF legend string.
  1. 'Payment on Informed CBU.'
  2. 'Operation Subject to Withholding.'
- The user can set the value of the legend from the accounting settings.

task-5409173

This update strengthens the security of our spreadsheet edition by introducing sheet protection. This prevents unauthorized modifications to spreadsheets, safeguarding important data and ensuring data integrity. It's a proactive measure to maintain the reliability and security of this key business tool.

task-5103728

This update introduces a 'draft' status for calendar events, allowing users to create events and fill in details without immediate notifications. This prevents unnecessary notifications and ensures accurate event tracking, particularly for events that are not yet confirmed. The change also streamlines the event status flow to avoid user errors.

This PR is a backup. Some features need more time and their commits are saved here.

Original PR: https://github.com/odoo/enterprise/pull/103469
Community PR:

This update introduces a webhook that alerts Odoo's Enterprise database when new transactions are available. This triggers a scheduled process to synchronize these transactions, ensuring data consistency between the databases. It improves the reliability of financial reporting.

Add a webhook so Odoofin can warn Enterprise DB's that transactions are fetchable, 
and so trigger the cron to fetch them.

task-5149019