| Canonical database seed | Always runs | Always runs | Always runs |
| Sample-matter fixture | Always runs (dev) | Always runs (dev) | neon-law-stg only |
| Test-local database fixtures | Browser/E2E harness only | Integration harness only | Never |
| Email | CapturingEmail by default | Non-production SendGrid | Production SendGrid |
| E-signature | Stub IDs and documents | Non-binding DocuSign demo | Live DocuSign |
| Billing | StubBillingProvider when Xero is absent | Same fallback | Same fallback today |
| Contract review | Stub without Vertex | Same fallback | Reference uses Vertex |
| AIDA free-form routing | NullRouter without Vertex | Same fallback | Reference uses Vertex |