# fusion_accounting_core — Cursor / Claude Context

## Purpose
Foundation for the Fusion Accounting sub-module suite. Owns:
- Three security groups (User / Manager / Admin) shared across all sub-modules
- Shared-field-ownership declarations on `account.move` and `account.reconcile.model`
- Runtime Enterprise-detection helper: `env['ir.module.module']._fusion_is_enterprise_accounting_installed()`

## What lives here
- `models/account_move.py` — declares Enterprise-extension fields with identical
  schemas / relation tables. Pure schema-preservation; no business logic.
- `models/account_reconcile_model.py` — same pattern for `created_automatically`
- `models/ir_module_module.py` — Enterprise-detection helpers
- `security/fusion_accounting_security.xml` — privilege + 3 groups + auto-assignment

## Critical rules
- NEVER add business logic to the shared-field models (account_move.py here).
  Logic belongs in the feature sub-module that owns it (e.g. fusion_accounting_bank_rec).
- NEVER rename the relation tables for shared M2Ms. They must match Enterprise verbatim
  for the dual-ownership pattern to work.
- Shared fields here have NO defaults beyond what Enterprise sets. The point is preservation.

## Cross-references
- Parent design: `fusion_accounting/docs/superpowers/specs/2026-04-18-fusion-accounting-enterprise-takeover-roadmap-design.md` (Section 3)
- Workspace conventions: `/Users/gurpreet/Github/Odoo-Modules/CLAUDE.md`