# Fusion Accounting Core

Foundation module for the Fusion Accounting suite.

## What it does

- Defines three security groups: Fusion Accounting User / Manager / Administrator
- Auto-promotes Odoo `account.group_account_user` -> Fusion User and
  `account.group_account_manager` -> Fusion Admin
- Declares schema-preservation fields on `account.move` and `account.reconcile.model`
  so that Enterprise extension fields (deferred revenue links, signing user, etc.)
  survive an Enterprise uninstall
- Exposes the helper `env['ir.module.module']._fusion_is_enterprise_accounting_installed()`

## Install

This module never installs alone. Install `fusion_accounting` (the meta-module)
or any of the feature sub-modules — they all depend on `fusion_accounting_core`.

## Uninstall

Uninstalling `fusion_accounting_core` will remove the security groups and the
schema-preservation fields. If Enterprise is also installed, uninstalling
`fusion_accounting_core` will cause Odoo to consider the deferred / signing
fields owned only by Enterprise — which is the original Enterprise-only state
(no data loss, just back to Enterprise-controlled schema).

## Troubleshooting

If users are missing the "Fusion Accounting" privilege section in user settings
after install, the `implied_ids` mechanism only fires for newly-added users.
Backfill existing users via SQL:

    INSERT INTO res_groups_users_rel (gid, uid)
    SELECT g.res_id, gu.uid
    FROM res_groups_users_rel gu
    JOIN ir_model_data g ON g.module = 'fusion_accounting_core' AND g.name = 'group_fusion_accounting_user'
    JOIN ir_model_data ag ON ag.module = 'account' AND ag.name = 'group_account_user' AND gu.gid = ag.res_id
    ON CONFLICT DO NOTHING;