feat(contracts): support signed revoke and batch buyer accounting migration

.github/workflows/ci.yml

@@ -24,21 +24,24 @@ jobs:
     name: Backend
     runs-on: ubuntu-latest
     steps:
+      - name: Enable Corepack
+        run: corepack enable
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 24
-          cache: npm
-          cache-dependency-path: backend/package-lock.json
+          cache: yarn
+          cache-dependency-path: backend/yarn.lock
+
       - name: Install
         working-directory: backend
-        run: npm ci
+        run: yarn install --immutable
       - name: Worker-only backend guard
         working-directory: backend
-        run: npm run check:worker-only
+        run: yarn run check:worker-only
       - name: Build
         working-directory: backend
-        run: npm run build
+        run: yarn run build
       - name: Test
         working-directory: backend
-        run: npm test
+        run: yarn test

backend/README.md

@@ -22,6 +22,7 @@ Cloudflare Worker for GoodDollar Celo-vault credit accounting and Celo → Base
 - `POST /v1/analytics/refresh`
 - `POST /v1/accounts/:account/stream-credits`
 - `POST /v1/accounts/:account/operator-consent`
+- `POST /v1/accounts/:account/operator-revoke`
 - `POST /v1/accounts/:account/withdraw`
 - `POST /v1/celo/events/record`
 - `POST /v1/channels/:channelId/close`
@@ -41,6 +42,7 @@ Cloudflare Worker for GoodDollar Celo-vault credit accounting and Celo → Base
 - `{ "account": "0x...", "fromBlock": "0x...", "toBlock": "latest" }`
 
 `GET /v1/analytics` returns daily analytics (last 30 days by default).
+
 - query: `days` (default `30`, max `365`)
 - response: `{ days, daily, global, lastRun }`
 - `daily` — one record per UTC day, newest last; the current day is always recomputed from midnight to now on each refresh and its snapshot is overwritten