refactor(actions): extract fileClient with phase22 coverage

memory-bank/change-log.md

@@ -2266,3 +2266,49 @@ Validation:
 Follow-ups:
 
 - Optional next bounded slice: add focused phase22 behavioural coverage for any future shared client wrappers introduced beyond `endpointClient`/`relayClient`.
+
+---
+
+### CL-065: TASK22260 next slice — fileClient extraction + phase22 behavioural coverage
+
+date: 2026-03-25
+author: Cline
+scope: `actions/clients/{fileClient,index}.js`, `actions/services/documentDirectService.js`, `tests/phase22/{file-client-behaviour,index}.test.cjs`
+type: change
+rationale: Continue bounded shared-client decomposition by extracting repeated file-route request patterns into `fileClient` and hardening behaviour with dedicated phase22 tests.
+impact: Reduces request-boilerplate duplication in document service and increases regression confidence for extracted file client helper contracts.
+status: completed
+
+Summary:
+
+- Added new shared client wrapper: `actions/clients/fileClient.js`:
+    - `getFileJson(url)`
+    - `getSignedFileJson(queryUrl)`
+    - `downloadFileBlob(url)`
+- Exported `fileClient` from `actions/clients/index.js` (and therefore via `actions/index.js` barrel path).
+- Migrated a bounded subset of `actions/services/documentDirectService.js` call sites to `fileClient` while preserving catch-path logging behavior:
+    - `getFilesFromBlobproxy` -> `getFileJson`
+    - `deleteAwaitingSubmissionsFromBlob` -> `getSignedFileJson`
+    - `deleteMyRepresentationsFromBlob` -> `getSignedFileJson`
+    - `deleteBlob` -> `getFileJson`
+    - `deleteRepBlob` -> `getFileJson`
+    - `downloadBlob` -> `downloadFileBlob`
+- Added `tests/phase22/file-client-behaviour.test.cjs` covering:
+    - delegation to `getJson`
+    - signed URL generation + `requestJson` invocation
+    - blob download config contract (`responseType: "blob"`)
+- Updated aggregate runner `tests/phase22/index.test.cjs` to include file-client suite.
+
+Validation:
+
+- `node tests/phase22/file-client-behaviour.test.cjs` -> pass (3/3)
+- `node tests/phase22/index.test.cjs` -> pass
+    - core-token: 2/2
+    - client-utils: 5/5
+    - file-client: 3/3
+    - phase22 combined: pass
+- `npm run lint` -> warnings only (pre-existing `react-hooks/exhaustive-deps`; no new lint errors)
+
+Follow-ups:
+
+- Optional next bounded slice: evaluate whether additional `documentDirectService` file-route call sites can adopt `fileClient` without altering current behavior contracts.