__ISSUE__:
- FIFO balance miscalculation for non-overlapping allocations. cumulative_allocated_days was partitioned globally by (employee, leave_type), but taken_per_allocation scoped leaves to each allocation's date range. This caused the FIFO formula to silently absorb leaves from one period into another's allocation capacity.

ex:
    Alloc A (20 days) 2025, taken leaves 15 days
    Alloc B (20 days) 2026, taken leaves 5 days

    report: 2025: (15 taken), (5 left)
            2026: (7 taken), (20 left)

- Left" rows shifted by one year in non-UTC timezones. Allocation date_from/date_to (Date fields) were cast to timestamp as midnight UTC. In negative-UTC /positive-UTC timezones midnight UTC of Dec 31 renders as the prev/next day.

__FIX__:
- detect overlap groups using a running MAX(date_to) and partition the cumulative sums within each overlap group. This way non-overlapping allocations are treated as independent, while overlapping or open-ended allocations still share FIFO within their group.

- offset allocation dates by 12 hours so no timezone can shift them across a day boundary.

- opw-5169606
- opw-5352114

Forward-Port-Of: odoo/odoo#257873

Pre-requisites:
------------------------------------------
1. Install `sale_project` and `project_account_budget` modules
2. Have two companies configured in the system
3. Enable Timesheets from the Settings app
4. Create two projects (one for each company)
5. Ensure the following settings are enabled on both projects:
     * Timesheets
     * Billable

Steps to Reproduce:
------------------------------------------
1. Switched to Company A
2. Create a product with:
    * Type: Service
    * Create on Order: Task
    * No company restriction
3. Set the product's `project_id` to Company A's project
4. Switch to the newly created company (Company B)
5. Set the product's `project_id` to Company B's project
6. Enable Analytic Distribution from SOL Optional
7. Create a sale order with the configured product, and delete the auto-fetched
Analytic Distribution account for the sale order (Company B's project)
8. Now confirm the sale order

Observation:
----------------------------------------
The SOL's analytic distribution uses the analytic account from Company A's project instead of Company B

Issue:
----------------------------------------
The `project_id` field on `product.template` is `company_dependent=True`, meaning it stores different values per company. However, in `_compute_analytic_distribution()`, the code accesses `line.product_id.project_id` without calling `with_company`, so it resolves the field using the wrong company context

Solution:
----------------------------------------
using `with_company()`, the correct company context is applied when accessing
`project_id`, preventing inconsistencies in multi-company environments and
ensuring the appropriate project is used for the corresponding company.


opw-5864452

Forward-Port-Of: odoo/odoo#257776

**Steps to reproduce:**
- Set up an event, go put it's state to Annonced
- Set up any online payment method (Demo also triggers the bug)
- Go to a PoS that sells the event tickets
- Purchase one and pay with the online payment method
- Once on the ticket screen, the button to download the event tickets is not displayed

**Why the fix:**
The normal flow only works for offline payment methods, because we check if the ordered is either paid or invoiced before setting all the values needed by the frontend regarding the ticket registration.

The problem is that with an online payment method, once we enter the **read_pos_data** method that sets
the values for the frontend, the order is still in draft, so we just return without doing anything.

We now set the values regardless of the order's status and send the confirmation mail in the same way as if it was an online payment.
In the case of an online payment, the mail will be sent by the **action_pos_order_paid** function that is called once the payment is processed.

A test might be a bit weird to make as we don't have a bridge for pos_online_payment and pos_event, and that we would need to mock the server's answer to be able to pay for the online payment and check that we have the needed values. So the setup for pos_event would have to be copied into pos_online_payment to test it and it would only be ran if both modules are installed.

opw-5438432

Forward-Port-Of: odoo/odoo#257593
Forward-Port-Of: odoo/odoo#249306

### Issue before this commit:
When a sales order with a product invoiced on delivered quantities is fully delivered and then completely returned the delivered quantity is reset to zero. In this situation, where nothing has been invoiced and nothing remains to be invoiced, the invoice status of the sales order line is incorrectly set to "Fully Invoiced" instead of "Nothing to Invoice".

### Steps to reproduce the issue:
1. Create a new quotation for a storable product.
2. Confirm the order.
3. Validate the delivery of the product.
4. Perform a return for the product
5. Validate that return to simulate a customer return.
6. The sales order details correctly reflect that the delivered quantity and invoiced quantity are both zero. Despite these values—which indicate there is nothing to invoice—the invoice status on the quotation erroneously displays as "fully invoiced".

### Cause of the issue:
The invoice status computation includes a fallback logic that marks a sales order line as "invoiced" when all related stock moves are either done or cancelled. However, this logic does not verify whether any quantity remains effectively delivered. As a result, after a full return, even when qty_delivered = 0, the condition is still met and the line is incorrectly marked as fully invoiced.

### Reason to introduce the fix:
A fully returned sales order line with no delivered and no invoiced quantity should not be considered fully invoiced. The fix ensures that the fallback to "invoiced" only applies when there is a strictly positive delivered quantity, preventing incorrect invoice status after full customer returns.

opw-6014772

---
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

Forward-Port-Of: odoo/odoo#257942
Forward-Port-Of: odoo/odoo#254871

Steps to reproduce:
-------------------------
1. Install the Time Off module.
2. Go to Time Off > Management > Allocations, create an allocation for an employee, and approve it.
3. Go to Reporting > Balance and apply the filter Department > Employee.
4. Change the employee’s department.
5. Create an allocation for the same employee and approve.
6. Apply the Department > Employee filter again.

Observed behaviour:
----------------------------
After a department change:
* Existing allocations keep the old department
* New allocations use the new department

As a result, duplicate employee entries appear in the report

Cause:
----------
It is using allocation.department_id.
Allocations store the department at creation time, which may differ from the employee’s current department, causing an incorrect report filtering.

Solution:
------------
Fetch department_id from hr_version instead of hr_leave_allocation in the hr_leave_employee_type_report.

This ensures:
* Leave balances always follow the employee’s current department
* Correct aggregation when grouping by Department → Employee

opw-5220577

Before:
<img width="1238" height="857" alt="image" src="https://github.com/user-attachments/assets/15e1293b-dc50-4067-a12f-079c046c2074" />

After:
<img width="1247" height="824" alt="image" src="https://github.com/user-attachments/assets/feea32de-0d9c-4eef-9ae5-639f4658560c" />





---
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

Currently, customers report errors when connecting or refreshing a
Shopee account through the `sale_shopee` module.

**Steps to reproduce:**
- Install and configure the `sale_shopee` module
- Attempt to connect a Shopee account via the onboarding flow
- Complete the authorization process

**Observed behavior:**
An error is raised during the authorization callback, preventing the
Shopee account from being connected or refreshed.

**Root cause:**
In `onboarding.py`, the `shopee_return_from_authorization` controller
incorrectly uses `utils.with_context(authorization_code=code)`. Since
`utils` is an imported Python module, calling `with_context` on it
attempts to set the context on the module itself rather than on a
model instance, which raises an error.

**Solution:**
Move the `with_context` call from the `utils` module to the `temp_shop`
record, which is the appropriate model instance that needs the context.

Additionally, this commit adds regression tests for the controller to
prevent future regressions, as this functionality was previously
untested.

opw-6092524

Forward-Port-Of: odoo/enterprise#113081

**Steps to reproduce**
- Create a first partner (name: "Partner", email: "partner@mail.com", phone: "123").
- Go to the website form of a helpdesk team, and submit a ticket using "Partner@mail.com" as email (notice the different capitalization) and "456" as phone number.

Behavior without this fix: a new partner is created, but the ticket is assigned to the orignal partner ("partner@mail.com") and its phone number is updated.

Behavior after this fix: no partner is created.

**Causes**
- the partner search was case sensitive
- the created partner was not used as the `partner_id` of the ticket as it was added to the params but needs to be in the kwargs passed to `handle_website_form` in order to be found used by `extract_data`. The original partner was found in `_find_or_create_partner` by the call to
`_mail_find_partner_from_emails` (case-insensitive)

Note: this commit also ensures consistency between the partner's company and the ticket's company (same as in `_find_or_create_partner` of `helpdesk.ticket`).
Also, avoid allowing modifying existing partner's phone via this form.

opw-5914064

Forward-Port-Of: odoo/enterprise#109393