Currently, when users group accrual reports by dates, aggregated computed fields are not calculated correctly. As a result, values such as the total amount may be displayed as zero even when the grouped records contain non-zero amounts.

## Steps to produce:
- Install Purchase and Accounting
- Create a product `Energy drink Sample` with cost 10$
- Create and Confirm a PO with the energy drink sample with vendor as `Administrator`
- Set `Received` as 1.
- Go to Accounting > Review > Bill to Receive
- Search Filter> Remove vendor grouping > Use Custom Group `Order Date`
- Expand the group

## Observed Behavior
Although the grouped lines contain an amount of 10 dollars, the aggregated total displayed in the sum remains zero.

The total should reflect the combined value of the grouped lines.

## Root Cause:
This issue occurs because opening the view triggers `_read_group_for_accrual`, which overrides the `_read_group` method on purchase order lines. The purpose of this override is to support grouping on computed fields that are not stored in the database such as `amount_to_invoice_at_date (Amount)`, `qty_received_at_date (Received)`.

When `_read_group_for_accrual` is executed, it delegates grouping for non-computed fields to the parent `_read_group` implementation, as shown at [1].

The parent method returns results in `res` similar to: 
```
[(datetime.datetime(2026, 6, 1, 0, 0), 1.0, 10.0, 1)]
```
During iteration over res at [2], the code uses `group[0]` as the grouping key. In this example, group[0] is `datetime.datetime(2026, 6, 1, 0, 0)`, which represents the granularity date
(e.g., the first day of the month when grouping by month).

However, `records_by_group` is keyed by the actual purchase order line order dates rather than the granularity dates returned by `_read_group`. For example:
```
{datetime.datetime(2026, 6, 12, 0, 0): purchase.order.line(1,)}
```

As a result, the lookup performed using the granularity date (`datetime.datetime(2026, 6, 1, 0, 0))` does not find a matching entry in `records_by_group`. Consequently, records falls back to an empty `purchase.order.line()` recordset.

Later, at [3], the aggregation logic computes totals using this empty recordset. Since the required fields are evaluated on an empty set of records, the aggregated values are computed as zero.

This ultimately causes the method to return a total value of zero
[1]-
https://github.com/odoo/enterprise/blob/eeea1377a7d36d11e140c44dee30a45228e7b4a6/account_accountant/models/analytic_mixin.py#L9-L24 
[2]-
https://github.com/odoo/enterprise/blob/eeea1377a7d36d11e140c44dee30a45228e7b4a6/account_accountant/models/analytic_mixin.py#L40-L42 
[3]-
https://github.com/odoo/enterprise/blob/eeea1377a7d36d11e140c44dee30a45228e7b4a6/account_accountant/models/analytic_mixin.py#L44-L47

## Solution:
The issue can be resolved by grouping records using the same date granularity specified in the groupby, rather than using the field values.

By aligning the grouping logic with the granularity returned by `_read_group` (for example, grouping by the first day of the month when using monthly grouping ), the keys in `records_by_group` match the values returned in `res`. As a result, the corresponding records are correctly retrieved during aggregation.

This ensures that the aggregation is performed on the appropriate purchase order lines instead of an empty recordset, allowing the computed totals to be calculated correctly.

[opw-6261225](https://www.odoo.com/odoo/project/49/tasks/6261225)

Forward-Port-Of: odoo/enterprise#120369

Currently, an error occurs when grouping planning slots by role.

**Steps to Reproduce:**
 - Install the `Planning` module.
 - Go to `Planning` > `Configuration` > `Roles`.
 - Create a `role` without assigning any resource to it (or assign a resource without a working time).
 - Go to `Planning`, create a new `planning slot`, assign the `role` created above, set the start date to `20/07/2026 12:00 PM` and the end date to `21/07/2026 2:00 AM`.
 - Switch to the `Gantt view` of the `planning slots`.
 - Group by `Role` and set the custom date range to `07/19/2026 -> 07/20/2026`, then click `Apply`.

`KeyError: 1`

The error occurs when the user groups the planning slots by role in the Gantt view. During 
the computation of the Gantt progress bar, if the existing slot's role has no resource, or has 
a flexible resource without a calendar, the regular resources become empty [1]. Then it 
attempts to compute the valid work intervals for these empty resources [2], resulting in an 
empty calendar work interval dictionary ({}) [3]. Later, when computing the duration over the 
period with the valid range slots, it tries to access the resource directly from the empty 
calendar_intervals dictionary [4], which raises the error.

This commit ensures that, when no work intervals are available for a resource, an empty 
work interval is used instead.

[1]- https://github.com/odoo/enterprise/blob/3871b75fb74a7b35bfea9610ca08b853eb723320/planning/models/planning_slot.py#L307

[2]: https://github.com/odoo/odoo/blob/5663509fe5caa1191fafcea3b3879dcef9ceca8f/addons/resource/models/resource_resource.py#L220

[3]: https://github.com/odoo/enterprise/blob/3871b75fb74a7b35bfea9610ca08b853eb723320/planning/models/planning_slot.py#L3415-L3417

[4]- https://github.com/odoo/enterprise/blob/3871b75fb74a7b35bfea9610ca08b853eb723320/planning/models/planning_slot.py#L3300

sentry-7620222164

Forward-Port-Of: odoo/enterprise#124991

Marketplace orders with discount lines could not match the
platform total: Odoo accumulated a small rounding residue vs Shopee's
total_amount / Lazada's order price.

sale_shopee
-----------
Changes:
- Fetch buyer-side escrow amounts via `_fetch_order_income` and pass them
  through `self.env.context` (`order_income`).
- Build item lines from the buyer-paid item price with `discount=0` and a
  recomputed tax-exclusive `price_unit`.
- Distribute order-level discounts (seller/platform vouchers and coins) as
  dedicated negative lines per product tax group via
  `_prepare_discount_lines_values`.
- Append a shipping line from `buyer_paid_shipping_fee` with fiscal-position
  mapped taxes.
- Reconcile any leftover residue with `_adjust_order_total` using a single
  tax-free amount-adjustment line.
- Register `default_discount_product` and configure it on upgrade (v1.1).


sale_lazada
-----------
- Port the same reconciliation model as shopee: reconciled line specs, discount=0 with
  discounted unit from paid_price, shipping line from shipping_fee, order-level
  "Discount line" distributed at order-level.

task-6112062

Forward-Port-Of: odoo/enterprise#125068
Forward-Port-Of: odoo/enterprise#117561

Previously, the `_preprocess_work_hours_data` method would abort early if no payslip was found for the given period. This prevented the correct generation or evaluation of expected Mexican work hours in contexts where a draft payslip does not yet exist (i.e., when an off-cycle payslip is initially generated for a given time period).

To resolve this, the strict dependency on the payslip record has been removed. It now falls back to the contract version's base data when a payslip is absent:
- The calendar defaults to the contract version's `resource_calendar_id`.
- The duration is assumed to be standard (`is_wrong_duration = False`).
- The Mexican schedule table (`l10n_mx_schedule_table`) is fetched globally from the environment (`hr.rule.parameter`) rather than relying on the payslip-specific helper method.

This ensures expected work hours and attendance fields are calculated consistently across all payroll workflows, regardless of whether the payslip has been instantiated.

opw-6351402

Forward-Port-Of: odoo/enterprise#125219

### Steps to reproduce:
- In a database with Switzerland localization, install 'Accounting' and 'Payroll'
- Manually change the debit and credit accounts on the Swiss ELM salary rules (rule code 1000)
- Install 'POS'
- Check the accounts you configured on the salary rules
>The accounts are reset to their default values

### Cause of Issue:
POS depends on the module `stock_account`. When `stock_account` is installed, the `_configure_journals` method in its `__init__.py` creates a new `account.journal` for inventory valuation. To apply default values to this journal, the method retrieves data from the chart template.
https://github.com/odoo/odoo/blob/7d16ef88784e18e885b97dbded3231775f1349d2/addons/stock_account/__init__.py#L41

The `hr_payroll_account` module overrides `_post_load_data` and unconditionally calls `_load_payroll_accounts(template_code, company)`. https://github.com/odoo/enterprise/blob/fcf06997a0eb999af86e4b6917311a86f04a390e/hr_payroll_account/models/account_chart_template.py#L16-L18

This triggers the reinstallation of the default payroll accounts, which overwrites and discards any manual configuration changes the user has made to their salary rules.

### Fix:
Ensure that default payroll accounts are only reset during a genuine chart of accounts loading process, and not during localized post-load operations triggered by other modules.

opw-6251112

Forward-Port-Of: odoo/enterprise#121687

In MPS, if a product’s Bill of Materials (BOM) is not specified at the time of addition, the system will not correctly account for batch size.

Steps to reproduce:
-------------------
* Create a product with a bom that has a batch size of 2
* Open MPS
* Add the product
  - without specifying the bom
  - Route Manufacture
* Add 1 in the Forcast Demand -> the batch size from the bom it's not taken into account.

Observation:
-------------
When updating mps, it will call get_production_schedule_view_state: https://github.com/odoo/enterprise/blob/7092dd2cc3578c3f22d1fbc82d958d57e2f93553/mrp_mps/models/mrp_mps.py#L424 this function when calculating the quantity to resplenish will call _get_resplenish_qty: https://github.com/odoo/enterprise/blob/7092dd2cc3578c3f22d1fbc82d958d57e2f93553/mrp_mps/models/mrp_mps.py#L534 to know the quantity to resplenish it will need the batch size, in mps they will only consider the batch size from the bom registered: https://github.com/odoo/enterprise/blob/7092dd2cc3578c3f22d1fbc82d958d57e2f93553/mrp_mps/models/mrp_mps.py#L863-L865 
Since there is no default value for bom_id, If there is no bom selected, there is no batch size.

opw-6259956

Forward-Port-Of: odoo/enterprise#124922
Forward-Port-Of: odoo/enterprise#119560

## Issue:
Exporting the general ledger as SIE4 set the duration of fiscal years to one year from the starting date of the fiscal year.

## Steps to reproduce:
- Create a fiscal year A of one month for year X-1 (December 1st to December31th year X-1)
- Create a fiscal year B of 1 year and 1 month (January 1st Year X to January 31th year X+1)
- Create Invoices in November year X-1, December year X-1, year X and in January year X+1 and confirm them
- Go to General Leder
- Set date to the fiscal year B
- Export as SIE4

### Current behavior:
- **for previous fiscal year**
	- declared fiscal year (#RAR field) goes :
		- from fiscal year X date_from -1 year
		- to fiscal year X date_to -1 year
	- However data are computed:
		- from fiscal year X date_from -1 year
		- to fiscal year X date_from -1 day
- **for current fiscal year**
	- declared fiscal year (#RAR field) goes :
		- from fiscal year X date_from
		- to fiscal year X date_to
	- However data are computed:
		- from fiscal year X date_from
		- to fiscal year X date_from +1 year

### Expected behavior:
Declared fiscal year match the one that is use for computation.
- for previous fiscal year
	- from fiscal year X-1 date_from
	- to fiscal year X date_from -1 day
- for current year
	- from fiscal year X date_from
	- to fiscal year X date_to

Cause:
Current year length was wrong because it [relied on](https://github.com/odoo/enterprise/blob/22b4100006ec24bf6e4b64042cbfdba360fcf470/l10n_se_sie4_export/models/account_general_ledger.py#L139-L140) the next_date_from which was wrong.


opw-6264766

Forward-Port-Of: odoo/enterprise#125354

While trying to fix the SAT cron, we did not think it through
it could cause infinite cron triggering.
Indeed, the write_date is updated on every record that is handled.

Fix is manyfold:
- Avoid re-processing what we already check within the last 4 hours/12 hours
depending on the type of the document.
- The domain takes the *static* create date instead of the write_date
to make sure we don't endless re-process the same record and that
the window of 7/60 days applies.
- Limit the Vendor Bill to be checked only during 7 days after their creation.
- Use the create_date in the order of the search to ensure we process older
records first, before their time-window closes.
- Process the Vendor Bills last, this ensure Customer Invoices will be processed
in priority in case we are not able to process everything within the last 4/12 hours.

This is still imperfect and a little fragile, we will find a better solution
in master, most likely by adding a dedicated field to keep track of the
last SAT check.

See https://github.com/odoo/enterprise/pull/123213
See https://github.com/odoo/enterprise/pull/103272

task-none

Forward-Port-Of: odoo/enterprise#125598
Forward-Port-Of: odoo/enterprise#125317

In a [previous PR], a test was introduced to reject any `l10n_xx_hr_*` module that has a `countries` key in its manifest and depends on a module that also has that country key.

This test was too broad and rejected some valid cases:
1. A non-auto-install module can have a country key defined to add  flags in the apps kanban view. ([src])
2. A module that has a country-specific regular dependency, but not as an  auto-install condition.

The second case is illustrated by [l10n_us_hr_payroll], which should auto-install when `hr_payroll` is installed and a US company exists.
With the old test, achieving this required adding `l10n_us` to its auto-install dependencies. 
But, since `l10n_us` is not auto-installable, `l10n_us_hr_payroll` would not be installed if you create a DB with a US company and only install `hr_payroll`.

In practice, that module was still being installed via a [post-init hook] in `hr_payroll`. This hook was installing all `l10n_XX_hr_payroll` modules for each country where a company is located, which is the behavior of the `countries` parameter in the manifest.

This caused issues during upgrades as this runs late in the process: after the auto-discovery phase.
Modules installed by this hook would be considered as `uninstalled` until `hr_payroll` is loaded.


This commit narrows the check to only fail if:
- A module has a `country` key in its manifest, and
- It has a country-specific module in its **auto-install** dependencies.

Moreover, it modifies `l10n_us_hr_payroll` to correctly rely on the auto_install mechanism instead of the post-init hook.

[previous PR]: https://github.com/odoo/enterprise/pull/101843
[src]: https://github.com/odoo/odoo/blob/6df9f92a537aa4bb4ee5dc946fe31c4e56e6dfea/odoo/addons/base/models/ir_module.py#L271-L273
[l10n_us_hr_payroll]: https://github.com/odoo/enterprise/blob/24a33ffb769557be498d61328522bb77f68d3a5a/l10n_us_hr_payroll/__manifest__.py
[post-init hook]: https://github.com/odoo/enterprise/blob/85185595cfd1ee5310ceb9dc80c0589accad2f19/hr_payroll/__init__.py#L21

Forward-Port-Of: odoo/enterprise#125853
Forward-Port-Of: odoo/enterprise#120279