### Steps to Reproduce:
1. Create a sign request and have 3 total signers (User, Customer, Employee)
2. Enable Signing Order and make the order as follows: (1) User, (2) Customer, (3) Employee
But make the User and Employee the same contact
3. Send and sign the request > Notice that (1) is able to sign for (3) immediately after, (2) has not signed yet.

### Description of the issue/feature this PR addresses: 
**Issue:** The signing order is ignored when the same user has to sign multiple times on a document, even if it is configured for a different person to sign in between. This happens because all signature request items are initialized in the 'sent' state upon creation, rather than strictly advancing based on the order. As a result, the system prematurely allows users to sign out of order and prompts them with their next turn too early.

**Solution:** To resolve this,  the controller was updated to include an `is_mail_sent = True` domain filter. This ensures that the UI's post-sign popup only displays documents where it is explicitly the user's active turn, rather than prompting a premature sign.

### Current behavior before PR: 
Users are able to sign prematurely, and the system will disregard the configured signing order.

### Desired behavior after PR: 
Users will only be prompted and able to sign a document when it is explicitly their turn, per the `mail_sent_order`. This way, documents are signed in order.

opw-6417327

Forward-Port-Of: odoo/enterprise#125573

Steps to reproduce:
- send an image in a Discuss channel
- click the image to open the file viewer
- click the download button

=> Android shows "The Odoo Mobile Apps only supports file downloads
   using the HTTP protocol."

downloadFile()'s GET-by-URL case fetches the URL via XHR, then saves the Blob response by clicking a hidden <a download> anchor on a blob: URL. Android's DownloadManager only accepts http(s) URLs, so it rejects that blob: URL instead of downloading anything.

Patch downloadFile._download to hand the URL directly to a new mobile.methods.saveFile bridge method when available, the same way download._download already delegates to mobile.methods.downloadFile.

Blob/string content downloads aren't handled here — the only such call site (spreadsheet JSON export) is debug-mode only, so this is left as a console.warn for now.

Related to odoo/odoo@e83fd8c08c879f5e262d39f24edcb3f81238ea82

Code made by Claude
Changes supervised by HUVW

Forward-Port-Of: odoo/enterprise#127693

### Steps to Reproduce:
1). Install l10n_vn_edi_viettel ('Vietnam E-Invoicing') module in v18. 
2). Migrate the database in any version above v18. 
3). AccessError will appear while generating ('Send to SInvoice') on invoice for non-admin users.

### Issue:
- In v18, users were able to send and generate documents via (Send to SInvoice). Since v18.1 onwards, field access [check] is enforced during this flow, and since `l10n_vn_edi_username` is restricted to admin users only [here], non-admin users hit an AccessError as soon as
`_l10n_vn_edi_get_credentials_company` reads this field on`res.company`.

```py
You do not have enough rights to access the field "l10n_vn_edi_username" on Companies (res.company). Please contact your system administrator.

Operation: read
User: 12
Groups: allowed for groups 'Role / Administrator'
```

### Solution:
- This commit fixes the issue by adding a `sudo()` call on the company inside [_l10n_vn_edi_get_credentials_company] itself, so that non-admin users can successfully send and generate documents like in the previous version, without any hassle.

[check]: https://github.com/odoo/odoo/blob/5ca10578a2fd1b40cd371ed5ad20c1654dfe54d3/odoo/orm/models.py#L3384
[here]: https://github.com/odoo/odoo/blob/5ca10578a2fd1b40cd371ed5ad20c1654dfe54d3/addons/l10n_vn_edi_viettel/models/res_company.py#L9
[_l10n_vn_edi_get_credentials_company]: https://github.com/odoo/odoo/blob/ecc267a231958c2dd99a7287c6bd1adbdbd22965/addons/l10n_vn_edi_viettel/models/account_move.py#L885

Ticket [link](https://www.odoo.com/odoo/project.task/6434854)
opw-6434854

The `modifiers` attribute was used in older Odoo versions to define field properties (invisible, readonly, required, etc.) Since the field already declares these same properties directly [state](https://github.com/odoo/odoo/blob/14.0/addons/account/models/account_move.py#L150-L155) , [amount_tax_signed](https://github.com/odoo/odoo/blob/14.0/addons/account/models/account_move.py#L229)
(e.g. `invisible=...`, `readonly=...`), the `modifiers` attribute is redundant and serves no purpose.

This attribute was never added manually by us — it was auto-generated by Odoo Studio when the default view was created. Studio's default views inject `modifiers` alongside the direct attributes. [Here](https://github.com/odoo/odoo/pull/104741/changes/975e875046691c898e8c1acb87d3626cd299e5aa#diff-dfebe5a93e1b8880e88268b024be4c6f106d144b20298d7bb6c4ae09a18bafd0L67-L145)

Also the `modifiers` attribute was fully simplified [removed](https://github.com/odoo/odoo/pull/104741/changes/975e875046691c898e8c1acb87d3626cd299e5aa#diff-849f1ed2a35a8b0b9cdd67f8e34de5d2ea7bf928103a83828587ba7ec14a62e4L52) starting from version 17.0, where views rely exclusively on direct attribute expressions (`invisible`, `readonly`, `required`) instead of the `modifiers` JSON encoding [main Patch](https://github.com/odoo/odoo/pull/104741) Keeping it around in the arch is therefore dead code with no effect.

However it needs to give the error on 17.0+ like this 
```
ERROR LOG:
<string>:1:0:ERROR:RELAXNGV:RELAXNG_ERR_NOELEM: Expecting an element data, got nothing
<string>:1:0:ERROR:RELAXNGV:RELAXNG_ERR_INVALIDATTR: Invalid attribute modifiers for element field
<string>:1:0:ERROR:RELAXNGV:RELAXNG_ERR_EXTRACONTENT: Element tree has extra content: field

```
As the modifer has been remove from the field [common.rng](https://github.com/odoo/odoo/pull/104741/changes/975e875046691c898e8c1acb87d3626cd299e5aa#diff-849f1ed2a35a8b0b9cdd67f8e34de5d2ea7bf928103a83828587ba7ec14a62e4L52) RelaxNG schema but modifiers set on fields here root tag is **form**, and the modifiers sit on fields inside a nested list. And Form views aren't RNG-validated from 17.0 till now —
[@validate('calendar', 'graph', 'pivot', 'search', 'list', 'activity')](https://github.com/odoo/odoo/blob/f0e58b9324af18d0cf0264aec2886d098e997f03/odoo/tools/view_validation.py#L314) has no form, and there's no [form_view.rng](https://github.com/odoo/odoo/tree/19.0/odoo/addons/base/rng).

Current senario
<img width="998" height="415" alt="image" src="https://github.com/user-attachments/assets/1a678c8f-8401-4e12-826f-9e98f6f2fe20" />

After removing the modifer: it show the same view because of field property
<img width="998" height="415" alt="image" src="https://github.com/user-attachments/assets/1a678c8f-8401-4e12-826f-9e98f6f2fe20" />

After removing the modifer still it shows the **modifiers="{'readonly':true, 'required':true}"** because the modifer is stay in the 14.0 but the 17.0 onwards it was not please see the scrrenshot its field preprty always.
<img width="1003" height="462" alt="image" src="https://github.com/user-attachments/assets/5e833924-b17c-417f-9e63-5a01c185f588" />

This Fix removes the unused `modifiers` attribute from the view arch, keeping only the direct attribute already present, with no functional change to the view's behavior.


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#281271
Forward-Port-Of: odoo/odoo#279976

### Issue before this commit:
When using the "Reverse and Create Invoice" feature on a posted invoice with a foreign currency and Cash Basis enabled, the expected Exchange Difference and Cash Basis tax entries are not generated upon the automatic reconciliation. The credit note is successfully created and reconciled with the original invoice, but the P&L exchange difference and the cash basis transition lines are completely missing. Currently, the only workaround is to manually reset the generated credit note to draft and re-post it, which forces the system to correctly calculate the currency rate differences and generate the missing entries.

### Steps to reproduce the issue:
1. Download Accounting
2. Go to Settings > Cash basis. Tick it and set as 'Base Tax Received Account' an account like 201000 Current Liabilities
3. Go to Chart of Accounts > search your account (ex. 201000 Current Liabilities) and be sure the flag of 'Allow Reconciliation' is on
4. Go to Taxes > 15% sales > set 'Tax Exigibility' as Based on Payment and 'Cash Basis Transition Account' always as 201000 Current Liabilities
5. Go to Currencies and set a new currency like MXN inserting tax rates as:
	1. 1 july 2026: 20$
	2. 15 july 2026: 15$
6. Create a new invoice with price 100 and 15% tax, set MXN as currency for the journal, set the date as 1 july and confirm it
7. Click on 'Credit Note', then 'Reverse and Create Invoice' and confirm it
8. go back to the invoice and see that after the total amount there is a new line 'Reversed on...'
9. After that line there should also be the line with the Exchange Difference since the tax rates for MXN currency were different at the moment of the invoice and at the moment of the credit note. This is only created by resetting to draft the credit note and confirm it again.

### Cause of the issue:
In the account.move.reversal wizard, when is_modify = True (Reverse and Create), the system triggers _reverse_moves with cancel=True. At the end of the _reverse_moves method, the newly created reverse moves are automatically posted and reconciled. However, this automatic posting is executed with move_reverse_cancel=True injected into the context: reverse_moves.with_context(move_reverse_cancel=cancel)._post(soft=False). When the reconciliation engine (_reconcile_plan_with_sync and _create_exchange_difference_moves) detects this specific context key, it intentionally bypasses the creation of both the exchange difference P&L moves and the cash basis entries, treating the reversal as a pure administrative cancellation rather than a financial operation with currency fluctuations.

### Reason to introduce the fix:
To ensure financial accuracy and compliance, especially when cash basis and multi-currency are involved, a reversal on a different date must reflect the actual exchange rate fluctuations and properly trigger cash basis rules. By removing the move_reverse_cancel context injection during the automatic posting of the reverse moves, we allow the native reconciliation engine to evaluate the newly computed balance (based on the credit note's date) against the original invoice. This ensures that exchange differences and cash basis journal entries are automatically and accurately generated on the first attempt.

opw-6399867

---
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Steps to produce:
---
- Install the `Sales` module.
- In Settings, enable `Automatic Invoice`.
- Also enable the Demo payment provider.
- Create a sale order with a total of `800` and confirm it.
- Generate a payment link for `200` from the gear icon and pay it.
- Generate a second payment link for `300` and pay it.
- Generate a final payment link for the remaining `300` and pay it.

Issue:
---
- After the first payment (200), an `invoice of 200` is created. Correct.
- After the second payment (300), an` invoice of 500` is created instead of 300.
- After the third payment (300), an `invoice of 100` is created instead of 300.

Root cause:
---
- The down payment invoice uses `order.amount_paid`, the cumulative sum of all transactions on the order, instead of the amount of the latest payment. This causes invoices to be sized off the running total instead of the individual payment delta.

Fix:
---
- Compute the invoice amount as `order.amount_paid - order.amount_invoiced` (the unpaid) instead of passing the cumulative `amount_paid` directly.

opw-6324036
---
I confirm I have signed the CLA and read the PR guidelines at www.odoo.com/submit-pr

Forward-Port-Of: odoo/odoo#273099

When the FIFO vacuum creates the "Expenses Revaluation" journal entry for an anglo-saxon delivery whose cost is adjusted by a later receipt, the JE was built using `env.company` instead of the company of the vacuumed SVL.

Steps to reproduce:
- Enable multi-company and activate anglo-saxon accounting on two companies A and B.
- In company B, on the product category: set FIFO costing + Automated  valuation, and set the stock input / stock output / stock valuation accounts and the stock journal. The Stock Output account must have "Allow Reconciliation" enabled.
- In company B, on the product: set an Expense Account and set the Cost (e.g. 10.0) this is the price the delivery will be valued at while the stock is negative. The product must have no quantity on hand in company B.
- While working in company B, sell and deliver 1 unit of that product: the delivery is valued at 10.0 and creates a  negative valuation layer.
- Still in company B, create and post the customer invoice of that sale, so the Stock Output line of the delivery entry gets reconciled with the Stock Output line of the anglo-saxon COGS entry of the invoice.
- Switch the active company to A, and from there create a purchase order of that product for company B at a different price (e.g. 15.0), then validate the linked receipt into company B's warehouse.
- The vacuum compensates the negative layer, but the resulting "Expenses Revaluation of ..." journal entry is posted in company A instead of company B.

This fix forces the company context to `vacuum_svl.company_id` when fetching the product accounts and preparing the move lines so the JE is always created in the company of the SVL being vacuumed.

opw-6066970
opw-6419188

Forward-Port-Of: odoo/odoo#259133

### Issue:
When multiple partners share the same email address, `_mail_find_partner_from_emails` may resolve to the wrong partner when the input is a formatted email like "`Name <email>`"

This affects use cases like email templates using `{{object.company_id.email_formatted}}` as sender, where the wrong company partner could be selected

### Cause:
The lookup in `done_partners` only matched on `email_normalized`, which cannot distinguish partners sharing the same email but with different names

The `email_formatted` field carries both name and email, allowing an exact match when the input is a formatted email

### Steps to reproduce:
- Install `account`
- Create an Email Template (Applies to: account.move, From: {{object.company_id.email_formatted}})
- Create a second company B with the same email as the default (e.g. info@yourcompany.com)
- In Settings (logged in as company B), set a Fiscal Position (e.g. US Taxable)
- Create an Invoice on company B
- In the chatter, click Send message, click the expand arrows button, use the three dots menu to select the template
- Send and check the Sender in the chatter

Before the fix, the sender resolves to the default company even though the invoice belongs to company B

opw-6260992

Forward-Port-Of: odoo/odoo#269509