[ADD] fs_attachment_s3_migration: enable S3 migration

fs_attachment_s3_migration/README.rst

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+=======================
+Attachment S3 Migration
+=======================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fstorage-lightgray.png?logo=github
+    :target: https://github.com/OCA/storage/tree/16.0/fs_attachment_s3_migration
+    :alt: OCA/storage
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/storage-16-0/storage-16-0-fs_attachment_s3_migration
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/storage&target_branch=16.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module lets users move existing ``ir.attachment`` files from the
+standard filestore or database into an Amazon S3-backed ``fs.storage``,
+using a wizard directly on the storage form.
+
+Migrations are run in background batches, skipping attachments that are
+already stored in S3 or must remain in PostgreSQL. This allows to run
+the process repeatedly avoiding creating duplicates.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+1. Open the target S3 ``fs.storage`` record and click *Move existing
+   attachments to S3* in the header.
+2. In the migration wizard, keep or adjust the storage code, batch size,
+   queue channel, and optional *Max Batches* value, then confirm to
+   enqueue jobs.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/storage/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/storage/issues/new?body=module:%20fs_attachment_s3_migration%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+-------
+
+* Cetmix
+
+Contributors
+------------
+
+Cetmix (cetmix.com)
+
+- Ivan Sokolov
+- George Smirnov
+
+Maintainers
+-----------
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+This module is part of the `OCA/storage <https://github.com/OCA/storage/tree/16.0/fs_attachment_s3_migration>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

fs_attachment_s3_migration/__init__.py

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+from . import models
+from . import wizard

fs_attachment_s3_migration/__manifest__.py

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+# Copyright 2025 Cetmix OU
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+{
+    "name": "Attachment S3 Migration",
+    "summary": """Async migration of attachments from local datastore to S3""",
+    "version": "16.0.1.0.0",
+    "license": "AGPL-3",
+    "author": "Odoo Community Association (OCA), Cetmix",
+    "website": "https://github.com/OCA/storage",
+    "depends": [
+        "queue_job",
+        "fs_attachment_s3",
+    ],
+    "data": [
+        "security/ir.model.access.csv",
+        "data/queue_job_channel_data.xml",
+        "views/fs_storage_view.xml",
+        "views/migration_wizard_views.xml",
+    ],
+    "installable": True,
+}

fs_attachment_s3_migration/data/queue_job_channel_data.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+    <!--
+    Queue job channel for S3 migration tasks.
+
+    This channel allows controlling concurrency of migration jobs.
+    Default capacity is inherited from root (1 concurrent job).
+
+    To increase parallelism, configure in queue.job.channel settings or
+    via server environment configuration:
+
+    Check https://github.com/OCA/queue/tree/18.0/queue_job documentation for more details.
+
+    -->
+    <record id="queue_channel_s3_migration" model="queue.job.channel">
+        <field name="name">s3_migration</field>
+        <field name="parent_id" ref="queue_job.channel_root" />
+    </record>
+</odoo>

fs_attachment_s3_migration/models/__init__.py

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+# Copyright 2025 Cetmix OU
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import ir_attachment
+from . import fs_storage

fs_attachment_s3_migration/models/fs_storage.py

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+# Copyright 2025 Cetmix OU
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import _, fields, models
+from odoo.exceptions import UserError
+
+
+class FsStorage(models.Model):
+    _inherit = "fs.storage"
+
+    migration_batch_size = fields.Integer(
+        default=500,
+        help="Number of attachments per background job batch.",
+    )
+
+    migration_channel = fields.Char(
+        string="Queue Channel",
+        default="root.s3_migration",
+        help="queue_job channel to use for migration jobs.",
+    )
+
+    def action_open_migration_wizard(self):
+        """Open the S3 migration wizard for this storage."""
+        self.ensure_one()
+        if not self.code:
+            raise UserError(_("Storage must have a code to run migration."))
+        return {
+            "type": "ir.actions.act_window",
+            "res_model": "s3.migration.wizard",
+            "view_mode": "form",
+            "target": "new",
+            "context": {
+                "default_storage_id": self.id,
+                "default_storage_code": self.code,
+                "default_batch_size": self.migration_batch_size,
+                "default_channel": self.migration_channel,
+            },
+        }