# UPGRADE_NOTES — fusion_accounting_ai

## V19.0.1.0.0 (initial — Phase 0 split-out)

### Origin
Code originally lived in `fusion_accounting/` (the original AI module). Split out
into this sub-module during Phase 0 of the Enterprise Takeover Roadmap.

### Additions in this version
- `services/data_adapters/` — DataAdapter base + 4 adapters (bank_rec, reports, followup, assets)
- `services/tools/*.py` — every tool that called Enterprise-specific APIs refactored through adapters
- `migrations/19.0.1.0.0/post-migration.py` — reassigns ir_model_data ownership from old module name
- Multi-company record rule on `fusion.accounting.session` (was missing pre-Phase-0 per CLAUDE.md Known Issues)

### Removed from manifest deps
- `account_accountant` (was hard dep)
- `account_reports` (was hard dep)
- `account_followup` (was hard dep)
- `mail` (now inherited via `fusion_accounting_core`)

Replaced with: `fusion_accounting_core` (Community-only). Runtime detection of
Enterprise modules via the data adapter pattern.