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fusion_accounting/fusion_accounting_ai/UPGRADE_NOTES.md

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+# 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.