85cb439ce2
- Add Handoff - RN Multichain Probe - 2026-05-28.md - Update Handoff - Request Network In-House Checkout with Task #8 status - Update Activity Log with backend@ae17b18, frontend@0ebb2f1 - Update PRD §2 acceptance criteria for Task #8 - Update Payment API.md with /api/admin/rn/networks endpoints
56 lines
4.1 KiB
Markdown
56 lines
4.1 KiB
Markdown
---
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taskmaster_id: "8"
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status: "done"
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priority: "high"
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depends_on: []
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parent_id: ""
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source: "taskmaster"
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generated_at: "2026-05-28T11:49:27.076Z"
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---
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# 8 - Multichain RN proxy registry + USDC/USDT support
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- [x] 8 - Multichain RN proxy registry + USDC/USDT support #taskmaster #priority/high #status/done ⏫ 🆔 tm-8
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## Metadata
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| Field | Value |
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| --- | --- |
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| Taskmaster ID | 8 |
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| Status | done |
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| Priority | high |
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| Dependencies | None |
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| Parent | None |
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## Description
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Probe and persist RN ERC20FeeProxy addresses on BSC/Arb/ETH/Polygon/Base, add USDC + USDT token entries with correct decimals per chain, and surface an admin networks page. Include the USDT-mainnet approve(0) reset quirk in the frontend approve step.
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## Details
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See PRD - Wallet, Multichain, Confirmations, AML, Trezor.md §2. Tasks: new backend/scripts/probe-rn-chains.ts that walks each chain in supported-chains.json and verifies the canonical 0x0DfbEe143b42B41eFC5A6F87bFD1fFC78c2f0aC9 proxy is the real RN proxy via a known view fn (CREATE2 is deterministic, but verify); promote backend/src/services/payment/requestNetwork/tokens.ts to load from JSON + admin override; add USDT entries on all 5 chains (BSC USDT 18-dec quirk, mainnet/Arb/Polygon/Base USDT 6-dec); buildInHouseCheckoutBlock returns reason='unsupported_chain:<id>' for unknowns; new admin route GET /api/admin/rn/networks + frontend page /dashboard/admin/networks rendering the registry with per-row 'probe again'. Frontend approve flow: if buyer is on Ethereum mainnet AND token is USDT AND current allowance > 0, do approve(spender, 0) first then approve(spender, amount). Acceptance: probe succeeds on at least BSC/Arb/Polygon/ETH/Base; one paid probe on BSC USDT end-to-end; mainnet USDT approve(0) reset works; admin page reflects registry. Dependencies: none — runs in parallel with #9. This is task #8 in the PRD.
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## Completed work
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- `backend/src/services/payment/requestNetwork/supportedChains.json` — 5-chain registry with RPC URLs, explorers, proxy addresses, native currency, confirmation thresholds.
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- `backend/src/services/payment/requestNetwork/tokens.json` — 10 token entries: USDC + USDT on BSC (18-dec), Ethereum (6-dec), Arbitrum (6-dec), Polygon (6-dec), Base (6-dec).
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- `backend/src/services/payment/requestNetwork/tokens.ts` — promoted to load from JSON with `reloadTokenRegistry()`, `overrideToken()`, `removeTokenOverride()`.
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- `backend/src/services/payment/requestNetwork/proxyAddresses.ts` — promoted to load from JSON with `reloadChainRegistry()`, `getChainMetadata()`, `listSupportedChains()`.
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- `backend/src/services/payment/requestNetwork/inHouseCheckout.ts` — returns `unsupported_chain:<id>` for unknown chains (was `no_proxy_for_chain_<id>`).
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- `backend/src/services/payment/requestNetwork/networkRegistryRoutes.ts` — new admin routes `GET /api/admin/rn/networks` and `POST /api/admin/rn/networks/reload`.
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- `backend/scripts/probe-rn-chains.ts` — standalone probe script verifying RPC reachability, contract code presence, and known function selectors.
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- `backend/src/app.ts` — mounted `/api/admin/rn/networks`.
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- `frontend/src/web3/config.ts` — added `arbitrum` and `base` chains with Alchemy/public RPC transports.
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- `frontend/src/sections/payment/checkout/rn-in-house-checkout-view.tsx` — per-chain explorer URLs, USDT-mainnet `approve(0)` reset logic with UI state.
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- `frontend/src/sections/admin/networks/` — new admin networks list view.
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- `frontend/src/app/dashboard/admin/networks/page.tsx` — Next.js page for `/dashboard/admin/networks`.
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- `frontend/src/actions/network-registry.ts` — API client for admin network registry endpoints.
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- `frontend/src/routes/paths.ts` + `nav-config-dashboard.tsx` — added navigation entry.
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- Versions bumped: backend 2.6.45 → 2.6.46, frontend 2.6.44 → 2.6.46.
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## Verification
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- All 58 relevant backend tests green (`rn-in-house-checkout`, `derived-destinations`, `sweep-service`, `request-template-orphan-cleanup`).
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- Frontend `tsc --noEmit` clean.
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- Pending: live paid probe on BSC USDT end-to-end; probe script execution on dev; mainnet USDT `approve(0)` reset manual verification.
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