2bdf4ef6a0
fusion.billing.reconciliation gains the compute: _compute_reconciliation (flat + charge overage vs external, status match/delta at a tolerance) and _reconcile_rows (resolve shadow sub -> flat + charge, upsert one row per service/partner/period, per-row isolated). The wizard gains a read-only _read_reconciliation_rows (NexaCloud usage cpu_hours*3600 + invoice-item subtotals per YYYY-MM) and a "Run Reconciliation" button. 2a amended to stamp x_fc_nexacloud_plan_id on shadow subs so reconciliation can find the charge. Read-only on NexaCloud; writes only reconciliation rows (shadow guarantees intact). 8 new tests, full suite green on odoo-trial.