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feat(billing): design + scaffold fusion_centralize_billing

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Centralize billing for all NexaSystems services (NexaCloud, NexaDesk,
NexaMaps, custom apps, memberships) on the Odoo 19 Enterprise instance,
replacing Lago. The module adds only the metering + integration layer;
native sale_subscription / account_accountant / payment_stripe do all the
financial work (invoicing, HST, dunning, portal, credit notes, Stripe).

Includes:
- Design spec (docs/superpowers/specs/2026-05-27-nexa-billing-centralized-design.md):
  6 locked decisions, architecture, data model, usage engine, Lago-shaped
  API, webhook control loop, NexaCloud pilot, phased dual-run migration.
- Module scaffold: 7 fusion.billing.* models (service, account.link, metric,
  charge, usage, webhook, reconciliation), bearer-auth API controller shell,
  security ACLs, README. Compiles on Odoo 19.0; engine/API bodies are stubs
  pending the implementation plan.
- CLAUDE.md rule #15: no sale.subscription model in Odoo 19 — a subscription
  is a sale.order(is_subscription) + sale.subscription.plan (verified live).

Task 0 verified: a single Stripe account is shared across NexaCloud and all
Lago providers, so no Stripe account/card migration is required.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
gsinghpal
2026-05-27 02:14:19 -04:00
parent 5764d439c3
commit 2b47bd8b10
16 changed files with 785 additions and 0 deletions
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fusion_centralize_billing/security/ir.model.access.csv Normal file
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id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
access_fusion_billing_service_admin,fusion.billing.service admin,model_fusion_billing_service,base.group_system,1,1,1,1
access_fusion_billing_account_link_admin,fusion.billing.account.link admin,model_fusion_billing_account_link,base.group_system,1,1,1,1
access_fusion_billing_metric_admin,fusion.billing.metric admin,model_fusion_billing_metric,base.group_system,1,1,1,1
access_fusion_billing_charge_admin,fusion.billing.charge admin,model_fusion_billing_charge,base.group_system,1,1,1,1
access_fusion_billing_usage_admin,fusion.billing.usage admin,model_fusion_billing_usage,base.group_system,1,1,1,1
access_fusion_billing_webhook_admin,fusion.billing.webhook admin,model_fusion_billing_webhook,base.group_system,1,1,1,1
access_fusion_billing_reconciliation_admin,fusion.billing.reconciliation admin,model_fusion_billing_reconciliation,base.group_system,1,1,1,1
access_fusion_billing_metric_acct,fusion.billing.metric accountant,model_fusion_billing_metric,account.group_account_manager,1,1,1,0
access_fusion_billing_charge_acct,fusion.billing.charge accountant,model_fusion_billing_charge,account.group_account_manager,1,1,1,0
access_fusion_billing_reconciliation_acct,fusion.billing.reconciliation accountant,model_fusion_billing_reconciliation,account.group_account_manager,1,1,1,0
1 id name model_id:id group_id:id perm_read perm_write perm_create perm_unlink
2 access_fusion_billing_service_admin fusion.billing.service admin model_fusion_billing_service base.group_system 1 1 1 1
3 access_fusion_billing_account_link_admin fusion.billing.account.link admin model_fusion_billing_account_link base.group_system 1 1 1 1
4 access_fusion_billing_metric_admin fusion.billing.metric admin model_fusion_billing_metric base.group_system 1 1 1 1
5 access_fusion_billing_charge_admin fusion.billing.charge admin model_fusion_billing_charge base.group_system 1 1 1 1
6 access_fusion_billing_usage_admin fusion.billing.usage admin model_fusion_billing_usage base.group_system 1 1 1 1
7 access_fusion_billing_webhook_admin fusion.billing.webhook admin model_fusion_billing_webhook base.group_system 1 1 1 1
8 access_fusion_billing_reconciliation_admin fusion.billing.reconciliation admin model_fusion_billing_reconciliation base.group_system 1 1 1 1
9 access_fusion_billing_metric_acct fusion.billing.metric accountant model_fusion_billing_metric account.group_account_manager 1 1 1 0
10 access_fusion_billing_charge_acct fusion.billing.charge accountant model_fusion_billing_charge account.group_account_manager 1 1 1 0
11 access_fusion_billing_reconciliation_acct fusion.billing.reconciliation accountant model_fusion_billing_reconciliation account.group_account_manager 1 1 1 0