This update cleans up how sales deposit products are managed, making deposit settings clearer while hiding internal demo data from everyday users. It also includes minor fixes for live chat, website blog behavior, web form reliability, and improves internal data lookup performance.

TASK : https://www.odoo.com/web#view_type=form&model=project.task&action=333&active_id=248
PAD : https://pad.odoo.com/p/r.6MaOL0vcAV9l0jd8

The system now keeps only the most useful database indexes for internal record references, removing redundant ones. This should reduce unnecessary database overhead while preserving efficient lookups where they matter most.

Indexes on individual columns (module, name, model, res_id) have been dropped,
and the index on (model, name) was duplicated in a unicity constraint.  We have
kept two useful indexes, namely:
- a unique index on (module, name)
- a simple index on (model, res_id)