Base Export Async

When you export records from a list view, the export dialog now shows an extra checkbox labelled "Asynchronous export (You will receive the export by email)". If you tick it and click Export, Odoo does not download the file right away; it queues the job in the background and shows a message telling you the file will arrive by email.

Behind the scenes, the module creates an "Asynchronous Export" record that stores the model description, a download link and an expiration date. When the background job finishes, an email is sent to the requesting user (and any other selected users) with a link to download the file. The email subject includes the model name and today's date.

Business rules and automatic behaviour: - You must have an email address on your user; otherwise Odoo raises an error. - Exported files are kept for a limited time (default 7 days, configurable through the "attachment.ttl" system parameter) and then automatically deleted by a daily scheduled action named "Delete Generated Exports". - Each user can only see their own export records, thanks to a record rule. - Portal users receive a secure access token in the download link.

The module touches the export dialog and list controller in the web client, and adds the delay.export model, a mail template, a cron job and a configuration parameter.