TASK22229: P2-S2 batch 1 migrate account/login relay GET endpoints

memory-bank/change-log.md

@@ -764,3 +764,40 @@ Follow-ups:
 
 - P2-S2 rollout: migrate the next relay-heavy endpoint batch onto `relayGet`/shared forwarding utility pattern.
 - P2-S3 hardening: add shared timeout/retry config and redacted structured relay error logging policy.
+
+---
+
+### CL-020: TASK22229 P2-S2 Batch 1 (account/login relay GET cluster)
+
+date: 2026-03-24
+author: Cline
+scope: `pages/api/middleware/relayForwarding.js`, `pages/api/endpoint/{getaccounts_api,getemailaccountcheck_api,getpreferredlanguage_api,getlogin_api,getpersonalaccount_api,getportalloginproxy_api}.js`, `tests/phase21/endpoint-handler-contract.test.cjs`
+type: change
+rationale: Deliver first P2-S2 batch as a dedicated commit by migrating a bounded account/login endpoint cluster onto shared `relayGet` while preserving response contracts.
+impact: Reduced relay boilerplate and improved consistency with no intended endpoint contract changes.
+status: completed
+
+Summary:
+
+- Extended `relayGet` to support optional `requestOptionsBuilder` for handlers requiring paged header variants.
+- Migrated Batch 1 endpoints to `relayGet`:
+    - `getaccounts_api.js`
+    - `getemailaccountcheck_api.js`
+    - `getpreferredlanguage_api.js`
+    - `getlogin_api.js` (uses `azureHeadersPaged` via `requestOptionsBuilder`)
+    - `getpersonalaccount_api.js`
+    - `getportalloginproxy_api.js` (uses `azureHeadersPaged` via `requestOptionsBuilder`)
+- Updated phase21 endpoint contract tests to mock `relayGet` for migrated handlers, preserving existing guard/catch/success assertions.
+
+Validation:
+
+- `node tests/phase21/api-contract-slice1.test.cjs` -> pass
+    - helper: 4/4
+    - file-handler: 53/53
+    - email-handler: 12/12
+    - endpoint-handler: 152/152
+    - documents-handler: 3/3
+
+Follow-ups:
+
+- Continue P2-S2 with Batch 2 as next dedicated commit on this same branch.