Phase 0 Task 17. Installs a safety guard on ir.module.module that blocks
uninstall of Odoo Enterprise accounting modules (account_accountant,
account_reports, accountant, account_followup, account_asset,
account_budget, account_loans) until the per-module migration flag
fusion_accounting.migration.<name>.completed is set to True. Guard
covers both button_immediate_uninstall (UI) and module_uninstall
(CLI/API) paths, raising UserError with a pointer to the migration
wizard and an escape hatch config parameter.
Also ships a TransientModel fusion.migration.wizard as a shell: it
detects installed Enterprise modules via GUARDED_MODULES and exposes
action_run_migration for sub-modules to extend in later phases. No
per-feature migrations are registered yet -- Phase 1+ sub-modules will
hook in their own steps.
Tests: TestSafetyGuard x2 pass (blocked-when-pending verified with
account_accountant installed; not-blocked-when-completed verified by
setting the flag).
Made-with: Cursor
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