docs: sync from backend ca2b1c4 — marketplace e2e smoke runner

11 - Testing/Smoke and Regression Procedure.md

@@ -39,6 +39,7 @@ Current scripts:
 | `bsc-testnet-payment-registry.sh` | Chain 97 token/RPC registry sanity. |
 | `confirmation-thresholds.sh` | Confirmation threshold APIs/settings. |
 | `funds-ledger-repo.sh` | Funds ledger repository behavior. |
+| `marketplace-e2e-notifications.sh` | Buyer/seller E2E smoke with notification assertions, concurrency levels, and reports. |
 | `marketplace-request-budget.sh` | Purchase request budget validation. |
 | `rn-intent.sh` | Request Network / in-house intent creation smoke. |
 | `rn-webhook.sh` | Webhook shape/signature flow. |
@@ -52,6 +53,21 @@ cd ~/CascadeProjects/escrow/backend
 BASE_URL=https://dev.amn.gg bash scripts/smoke/bsc-testnet-payment-registry.sh
 ```
 
+Two-round marketplace smoke:
+
+```bash
+cd ~/CascadeProjects/escrow/backend
+BASE_URL=https://dev.amn.gg \
+PAYMENT_MODE=status \
+CONCURRENCY_LEVELS=1 \
+ROUNDS=2 \
+bash scripts/smoke/marketplace-e2e-notifications.sh
+```
+
+Use `PAYMENT_MODE=live` when the BSC Testnet wallet has gas and canonical
+tUSDT. The runner writes reports to ignored `backend/tmp/e2e-reports/`; see
+[[Marketplace E2E Smoke Runner]].
+
 Run against local:
 
 ```bash
@@ -165,4 +181,3 @@ Stop or roll back if any P0 condition fails:
 - backend/frontend/scanner registry mismatch exists;
 - CI deploy reports success but live containers are not healthy;
 - secrets appear in git status, logs, docs, or CI output.
-