TASK22269: add signed request client and migrate portal deleteWatchedCases pilot

memory-bank/change-log.md

@@ -2725,3 +2725,46 @@ Validation:
 Follow-ups:
 
 - Sequence A step3 targeted gaps are now covered; further test expansion should be treated as new scope (e.g., deeper end-to-end journey assertions).
+
+---
+
+### CL-076: TASK22269 Slice B1.1 — signed-request helper set + portal pilot signed-flow migration
+
+date: 2026-03-25
+author: Cline
+scope: `actions/clients/{signedRequestClient,index}.js`, `actions/services/portalDirectService.js`, `tests/{serviceHarness,phase22/portal-service-behaviour}.cjs`
+type: change
+rationale: Execute Sequence B Workstream B1 pilot by introducing shared signed request helpers (GET/POST/DELETE) and migrating one bounded portal signed flow without broader module rollout.
+impact: Reduces duplication and drift risk in hash-signing + method execution paths while preserving existing signed-flow behavior contracts.
+status: completed
+
+Summary:
+
+- Added new shared signed-request client helper module:
+    - `actions/clients/signedRequestClient.js`
+    - exports:
+        - `getSignedJson(queryUrl, config?)`
+        - `postSignedJson(queryUrl, data, config?)`
+        - `deleteSignedJson(queryUrl, config?)`
+    - all helpers use existing `buildHashedQueryUrl(...)` + `requestJson(...)` composition to preserve signing semantics
+- Exported new helper module via `actions/clients/index.js`.
+- Migrated exactly one pilot signed flow in portal service:
+    - `deleteWatchedCases` in `actions/services/portalDirectService.js`
+    - from inline `buildHashedQueryUrl(...).then(requestJson(...))` to `deleteSignedJson(queryUrl)`
+    - preserved existing catch/log behavior (`consoleLogger` + `undefined` return on catch)
+- Added test harness compatibility for VM import-stripping suites:
+    - `tests/serviceHarness.cjs` now injects default `deleteSignedJson` mock behavior.
+- Expanded portal behavioral tests with explicit negative-path assertion:
+    - `tests/phase22/portal-service-behaviour.test.cjs`
+    - verifies `deleteWatchedCases` logs and safely returns `undefined` when signed delete fails.
+
+Validation:
+
+- `npm run lint` -> pass with warnings only (pre-existing `react-hooks/exhaustive-deps`; no new lint errors)
+- `node tests/phase22/index.test.cjs` -> pass
+    - portal-service suite now 5/5 including signed-delete failure path
+- `node tests/phase7/service-behaviour.test.cjs` -> pass (13/13)
+
+Follow-ups:
+
+- Continue Sequence B B1 in future bounded slices by migrating additional signed flows one module/function cluster at a time (outside this slice).