This issue occurs on Single App and Single L10n, without demo data

### Summary
This part of the test verifies that the sub line totals are calculated correctly, which from 18.3 requires the stock.group_production_lot setting to be active. Specifically, it validates that the sum accurately reflects the Unit of Measure (UOM) across various packagings.
https://github.com/odoo/enterprise/blob/93e3c6f13fbab8d54694648d04908e451f1e97fc/stock_barcode/static/tests/tours/tour_test_barcode_flows_picking.js#L6472-L6498

### Observation
The grouping logic is contingent on the stock.group_production_lot setting. If this setting is inactive, the system fails to group lines, preventing the calculation of the aggregate total.

Without the production lot group active, the conditional checks will bypass the grouping process:
https://github.com/odoo/enterprise/blob/d664e1f97f6e7fa462b4cf1806322a54762c0de4/stock_barcode/static/src/models/barcode_model.js#L53 https://github.com/odoo/enterprise/blob/d664e1f97f6e7fa462b4cf1806322a54762c0de4/stock_barcode/static/src/models/barcode_model.js#L224-L225 

When the demo data are enabled [the group is implied](https://github.com/odoo/odoo/blob/8a7ca8beac521f41faf79a6022935fdbb605de76/addons/stock/data/stock_demo.xml#L185-L187)


### Impact
When stock.group_production_lot is disabled:
 - Lines remain ungrouped.
 - The total sum of the grouped line is never generated.
 - The test fails as it cannot find or validate the expected sub-line totals.

This issue originate from the 18.3 forward port of this [commit](https://github.com/odoo/enterprise/commit/84d4b1f144e8a437fe76ec5ef3bc9799cdf993b0) 
runbot-241109

Forward-Port-Of: odoo/enterprise#108908

**Steps to reproduce:**
- Install Expenses
- Activate "Incoming Emails" in the settings
- Configure the expense Alias
- Configure an "Incoming Mail Server"

- Create a Branch for a company
- Create a User:
  * Email Address: [an existing email address]
  * Allowed Companies: [the parent company + the branch company]
  * Default Company: [the branch company]
  * User Types: Internal User
- Create an employee for the user in the parent company

- From the email address, send a PDF to the expense alias

**Issue:**
The expense is not created in the database due to a UserError: "Incompatible companies on records".

**Cause:**
When the email is received and treated, the system tries to create an expense.
From the email address, it retrieves an employee that is linked to the expense.
For the company of the expense, if a user is linked to the employee, it takes the default company of the user.
Otherwise, it takes the company of the employee.
In this case, the company set on the expense is the default company of the user (i.e. the branch company) and the employee set on the expense belongs to the parent company ; which triggers the UserError during the company check.

**Solution:**
Always use the company of the employee, even if there is a user linked to the employee.

opw-5346809




---
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Forward-Port-Of: odoo/odoo#253497
Forward-Port-Of: odoo/odoo#249415

When we create new payments for bills and refunds, we offer the possibility to merge inbound and outbound payments together if they are from the same provider and the bills all reference the same recipient account.

Depending on the balance of the resulting payment, we assign an adequate inbound or outbound bank account as the recipient.

The `partner_bank_id` can be assigned through different processes:

- If the wizard has only one batch:

The wizard is editable and the user can select a bank account from the computed `available_partner_bank_ids`.

- If there are multiple batches:

Odoo assigns a `partner_bank_id` in `_create_payment_vals_from_batch()`. For an outbound payment, it uses the batch['payment_values']['partner_bank_id'].

The problem is that this value is not updated after a merge of payments. If the base line being merged on is a refund, but the result is an outbound payment, then the `partner_bank_id` should be changed accordingly.

I decided to include the changes of my previous PR targeting v18 and fixing the grouping of payments, even though it was deemed unnecessary for v17, because it felt weird not to considering how close these fixes are.

-Previous PR : [242863](https://github.com/odoo/odoo/pull/242863)

However, I can remove these changes or re-target this PR to v18. I am not sure what would be best here.

Ticket: opw-5401372

Forward-Port-Of: odoo/odoo#249537
Forward-Port-Of: odoo/odoo#246558

**Problem:**
When users in debug mode manually add the planning report action through Settings/Technical/Reports and then print from the list or form view, they receive a blank/invalid PDF report.

**Steps to reproduce:**
1. Go to Settings app and enable debug mode
2. Navigate to Technical → Reports
3. Search for "slot_report"
4. Click "Add to print menu" button
5. Refresh the browser
6. Go to Planning app and switch to list view
7. Select a few planning.slot records
8. Click Print → Planning

**Current behavior:**
A blank or invalid PDF is generated.

**Expected behavior:**
Users should receive a clear error message directing them to use the correct print method from the calendar view.

**Cause of the issue:**
The planning report requires a pre-processed data structure (weeks, grouped slots per day/week, and group-by mappings) that is only prepared by the action_print_plannings() method called from the custom Print button in the calendar view. The standard print menu invokes _render_qweb_pdf() directly without this data preparation, and there is no mechanism to pass this complex data structure through the standard print workflow. This results in the template receiving empty data contexts, producing blank reports.

**Fix:**
Block the planning report from being printed through _render_qweb_pdf() when called without the proper data context. This is done by checking if the report name is 'planning.slot_report' and raising a UserError with a clear message directing users to use the Print button in the calendar view instead. This prevents the generation of invalid reports while guiding users to the correct workflow that properly prepares the required data.

opw-5477184

Forward-Port-Of: odoo/enterprise#105168

During migration, the `l10n_pl` end-migrate script was loading
 for every company using the `pl` chart template, including child companies.

However, account codes must be [unique](https://github.com/odoo/odoo/blob/18.0/addons/account/models/account_account.py#L1033) across parent and child companies.
Since the chart is already loaded for the root company, reloading it for child companies cause duplicate account code errors during migration.

To prevent this, restrict chart loading to root companies only, which is consistent with how account code uniqueness is enforced.

**Steps to reproduce:**
1. Create a database in 17.0
2. Install `account_accountant` and `l10n_pl`
3. Create a child (branch) for the company using the `pl` chart template
4. Migrate the database to 18.0
5. Migration fails with duplicate account code validation errors

**Traceback**
```py
Traceback (most recent call last):
  File "/home/odoo/odoo18/community/odoo/service/server.py", line 1366, in preload_registries
    registry = Registry.new(dbname, update_module=update_module)
  File "<decorator-gen-13>", line 2, in new
  File "/home/odoo/odoo18/community/odoo/tools/func.py", line 97, in locked
    return func(inst, *args, **kwargs)
  File "/home/odoo/odoo18/community/odoo/modules/registry.py", line 129, in new
    odoo.modules.load_modules(registry, force_demo, status, update_module)
  File "/home/odoo/odoo18/community/odoo/modules/loading.py", line 523, in load_modules
    migrations.migrate_module(package, 'end')
  File "/home/odoo/odoo18/community/odoo/modules/migration.py", line 222, in migrate_module
    exec_script(self.cr, installed_version, pyfile, pkg.name, stage, stageformat[stage] % version)
  File "/home/odoo/odoo18/community/odoo/modules/migration.py", line 259, in exec_script
    mod.migrate(cr, installed_version)
  File "/home/odoo/odoo18/community/addons/l10n_pl/migrations/2.1/end-migrate.py", line 8, in migrate
    Template._load_data({'account.account': Template._get_account_account('pl')})
  File "/home/odoo/odoo18/upgrade/migrations/account/0.0.0/pre-ensure-deferred-accounts.py", line 36, in _load_data
    return super()._load_data(data, *args, **kwargs)
  File "/home/odoo/odoo18/community/addons/account/models/chart_template.py", line 677, in _load_data
    created_records[model] = self.with_context(lang='en_US').env[model]._load_records(all_records_vals, ignore_duplicates=ignore_duplicates)
  File "/home/odoo/odoo18/community/odoo/models.py", line 5531, in _load_records
    records = self._load_records_create([data['values'] for data in to_create])
  File "/home/odoo/odoo18/community/odoo/models.py", line 5435, in _load_records_create
    records = self.create(vals_list)
  File "<decorator-gen-196>", line 2, in create
  File "/home/odoo/odoo18/community/odoo/api.py", line 498, in _model_create_multi
    return create(self, arg)
  File "/home/odoo/odoo18/community/addons/account/models/account_account.py", line 987, in create
    records._ensure_code_is_unique()
  File "/home/odoo/odoo18/community/addons/account/models/account_account.py", line 1064, in _ensure_code_is_unique
    raise ValidationError(
odoo.exceptions.ValidationError: Account codes must be unique. You can't create accounts with these duplicate codes: 01.000.100, 01.000.200, 01.000.400, 01.000.900, 02.000.100, 02.000.200, 02.000.300, 02.000.900, 03.000.100, 03.000.200, 03.000.300, 03.000.400, 03.000.500, 03.000.600, 03.000.700, 03.000.800, 03.000.900, 03.050.100, 03.050.200, 03.050.300, 03.050.900, 07.010.200, 07.010.300, 07.010.400, 07.010.500, 07.010.600, 07.020.100, 07.020.200, 07.020.300, 07.030.100, 07.030.200, 08.000.100, 08.000.200, 08.000.300, 08.000.400, 08.000.500, 10.000.100, 10.000.200, 10.000.900, 13.000.100, 13.000.200, 13.000.900, 14.000.100, 14.000.200, 14.000.900, 14.050.100, 20.000.100, 20.000.200, 20.000.300, 21.000.100, 22.000.100, 22.010.100, 22.010.200, 22.010.300, 22.020.100, 22.020.200, 22.020.300, 22.030.100, 22.030.200, 22.030.300, 22.030.400, 22.030.500, 22.030.600, 23.000.100, 23.000.200, 23.000.900, 24.010.100, 24.010.200, 24.020.100, 24.020.200, 24.030.100, 24.030.200, 24.030.300, 24.030.400, 24.050.100, 24.090.100, 24.090.200, 24.090.300, 24.090.900, 28.000.100, 29.000.100, 29.010.100, 29.020.100, 30.000.100, 30.000.200, 30.000.300, 30.000.400, 30.000.500, 30.000.600, 30.000.700, 30.000.800, 30.000.900, 31.010.100, 31.060.100, 31.090.100, 33.000.100, 33.000.200, 33.000.300, 33.000.400, 33.000.500, 33.000.600, 34.010.100, 34.020.100, 34.020.200, 34.020.300, 34.020.400, 34.060.100, 34.070.100, 39.000.100, 40.000.100, 40.010.100, 40.010.200, 40.010.300, 40.010.400, 40.010.900, 40.020.100, 40.020.200, 40.020.300, 40.020.400, 40.020.500, 40.020.600, 40.020.700, 40.020.900, 40.030.100, 40.030.200, 40.030.300, 40.030.400, 40.030.500, 40.030.600, 40.030.700, 40.030.800, 40.030.900, 40.040.100, 40.040.200, 40.050.100, 40.050.200, 40.050.300, 40.050.900, 40.090.100, 49.000.100, 49.000.200, 49.000.300, 49.000.400, 50.000.100, 50.000.200, 50.010.100, 50.010.200, 52.010.100, 52.070.100, 53.000.100, 53.000.200, 55.000.100, 55.000.200, 58.000.100, 60.000.100, 60.010.100, 60.020.100, 62.000.100, 62.010.100, 64.000.100, 64.010.100, 65.000.100, 65.010.100, 70.000.100, 70.000.200, 70.000.300, 70.000.400, 70.010.100, 70.010.200, 70.010.300, 70.010.400, 73.000.100, 73.000.200, 73.000.300, 73.000.400, 73.010.100, 73.010.200, 73.010.300, 73.010.400, 74.000.100, 74.000.200, 74.000.300, 74.010.100, 74.010.200, 74.010.300, 75.000.100, 75.000.200, 75.000.300, 75.000.400, 75.000.500, 75.000.600, 75.000.700, 75.000.900, 75.010.100, 75.010.200, 75.010.300, 75.010.400, 75.010.500, 75.010.900, 76.000.100, 76.000.200, 76.000.300, 76.000.400, 76.000.900, 76.010.100, 76.010.200, 76.010.300, 76.010.900, 79.000.100, 79.000.200, 79.000.300, 79.000.400, 79.000.500, 80.000.100, 80.000.200, 80.000.300, 80.000.400, 81.010.100, 81.020.100, 81.030.100, 81.040.100, 82.000.100, 83.000.100, 83.000.200, 83.010.000, 83.010.100, 83.010.200, 84.010.000, 84.020.100, 84.020.200, 85.010.100, 85.020.100, 85.020.200, 85.020.300, 86.000.100, 87.000.100, 87.000.900
```

**Fix:**
- Load `account.account` records only for root companies during When the chart template loads for `pl` localization.

opw-5932421
upg-3895331

Description of the issue/feature this PR addresses:

Current behavior before PR:

Desired behavior after PR is merged:




---
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Forward-Port-Of: odoo/odoo#250654

… request

ARCA requires numeric fields such as unit price and quantity to have a maximum of 12 integer digits and 6 decimal places. If these fields are sent with more than 6 decimals, AFIP rejects the invoice with errors like:
`Code 1814: Campo Cmp.Items.Pro_precio_uni invalido. El valor debe tener 12 enteros y 6 decimales como máximo.`

To ensure compliance, values are formatted before sending the request to ARCA.

**Precision rationale**
ARCA WS documentation mentions 4 decimal places, while the WS error message itself refers to 6 decimals, and in practice the service accepts up to 6 decimals without rejection.

In this implementation, we intentionally use 2 decimal places. The reason is consistency with the rest of the monetary amounts in the invoice: line totals, invoice total, taxes, and related amounts are all rounded to 2 decimals, even in cases where the documentation allows higher precision (e.g., 3 decimals).

Before the changes in rounding precision, the stable version already rounded values according to line rounding. In real-world accounting scenarios, the vast majority of use cases operate with 2 decimal places. Keeping this behavior ensures consistency across calculations and avoids discrepancies caused by mixed rounding strategies.

For a stable release, this was considered the safest and most predictable option, even though the WS technically allows higher precision.

Stable version changes are covered in the following commits:
https://github.com/odoo/odoo/pull/243987/changes/8a21ec45f9d72a7c80d9c1f8398fe01e298ae775
https://github.com/odoo/odoo/pull/246347/changes/79ceeed707ef274f19a04e741f6cb8ac60c44321


<img width="780" height="435" alt="image" src="https://github.com/user-attachments/assets/9f25a0e8-b9d2-4ad2-bbcf-e988c7f8a4c9" />

[WSFEX - Manual de desarrollador](https://www.afip.gob.ar/ws/WSFEX/WSFEX-Manualparaeldesarrollador.pdf)

Forward-Port-Of: odoo/enterprise#110218
Forward-Port-Of: odoo/enterprise#106509

**Steps to reproduce:
1. Install invoicing app
2. Add French language in the settings
3. Create a customer with language set as French
4. Create a product and define french translations of the name and the description in Sales tab
5. Create an invoice for that customer and choose the product you created
6. You will find the translated product name and description under the product name
7. Edit the description, save and preview the invoice
8. The invoice line will contain [Product Name EN] [Product Name FR] [Product Description FR]

**Description of the issue:
When creating an invoice for a customer whose language differs from the user's account language, manually editing the product description on an invoice line causes the original product name to be prepended to the description. The same issue happens in a RFQ in Purchase.

**Expected behaviour:
User can edit the product description in the invoice line and the output in the invoice should only be the translated name and description, without the original product name.

**Why this happens?
1. When the product is selected in the invoice line, the label is loaded from _compute_name method in account_move_line, which holds the translated name and description.
2. After editing the description and escaping the field (clicking outside it), the parseLabel method is called, which prepends the original name to the label, making the invoice output as [original name] [translated name] [translated desc.]

**The fix
Added translated_product_name computed field to follow a similar flow as the sale quotation which is already working as intended. Fix is done in Invoice and Purchase.

opw-5480494

Forward-Port-Of: odoo/odoo#248401