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fusion_accounting/fusion_accounting_migration/CLAUDE.md

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+# fusion_accounting_migration — Cursor / Claude Context
+
+## Purpose
+Transitional sub-module that helps clients move from Odoo Enterprise accounting
+to Odoo Community + Fusion Accounting without losing data.
+
+## What it does
+- Safety guard: blocks uninstall of Enterprise accounting modules until the
+  migration wizard has run (per-module flag in ir.config_parameter)
+- Migration wizard: shell that other fusion sub-modules extend with per-feature
+  migration logic (Phase 0 ships only the shell)
+
+## Critical
+- The safety guard overrides `button_immediate_uninstall` AND `module_uninstall`
+  on `ir.module.module`. Both paths must be guarded — UI uninstall, CLI uninstall,
+  and API uninstall all go through one or the other.
+- Each fusion feature sub-module that replaces an Enterprise feature MUST extend
+  the migration wizard's `action_run_migration` to add its own migration step
+  AND set the corresponding `fusion_accounting.migration.<module>.completed`
+  flag to True after running.