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docs: sync from backend 7688f57 — sweep gas strategy: PermitPull + GasTopUp signers

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Siavash Sameni
2026-05-29 10:13:44 +04:00
parent 8623762b85
commit eeb8066b87
4 changed files with 202 additions and 1 deletions
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09 - Audits/Activity Log.md
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@@ -11,6 +11,17 @@ entries on top. Maintained by agents per the rule in `../AGENTS.md`.
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### 2026-05-29 — backend@7688f57 — Sweep gas strategy: PermitPull + GasTopUp signers
**Commits:** backend `7688f57`
**Touched:**
- Backend: `src/services/payment/wallets/sweepService.ts`, `__tests__/sweep-service.test.ts`, `.env.example`
**Why:** Implement hybrid two-signer sweep strategy per `PRD - Sweep Gas Strategy - Permit Pull vs Gas Top-Up.md`. `PermitPullSweepSigner` uses EIP-2612 permit for non-BSC chains (ETH, Arbitrum, Polygon, Base) so derived addresses never need native gas. `GasTopUpSweepSigner` handles BSC by topping up BNB from a master wallet before the derived address calls `transfer()`. `getSweepSigner(chainId, tokenSymbol)` auto-selects the correct signer. Static `PERMIT_CAPABLE_TOKENS` map seeded from on-chain audit 2026-05-29.
**Verification:** `tsc --noEmit` clean. `npx jest __tests__/sweep-service.test.ts` — 31/31 pass (including 16 new tests for auto-selection and permit capability matrix).
**Linked docs updated:** [[07 - Development/Environment Variables]], [[PRD - Sweep Gas Strategy - Permit Pull vs Gas Top-Up]]
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### 2026-05-28 — deployment@4e8658d — Gatus monitoring: Docker service + config
**Commits:** deployment `1ac2e74` → `4e8658d`