refactor(api): migrate batch 11 advancedsearchpaged to relayGet

memory-bank/change-log.md

@@ -1037,3 +1037,37 @@ Validation:
 Follow-ups:
 
 - Continue P2-S2 with the remaining legacy relay GET candidates (`createwatchedcases_api`, `deletewatchedcasesproxy_api`, `getadvancedsearch_api`, `getadvancedsearchpaged_api`, `getbasicsearch_by_address_api`, `getbasicsearch_by_lparref_api`, `getdnscoords_api`).
+
+---
+
+### CL-028: TASK22229 P2-S2 Batch 11 (advanced-search-paged relay GET)
+
+date: 2026-03-24
+author: Cline
+scope: `pages/api/endpoint/getadvancedsearchpaged_api.js`, `tests/phase21/endpoint-handler-contract.test.cjs`
+type: change
+rationale: Continue bounded relay migration by moving the remaining advanced-search paged GET handler to shared `relayGet` while preserving query validation and response contracts.
+impact: Reduced duplicated relay plumbing and aligned advanced paged search route with shared forwarding; no intended API contract changes.
+status: completed
+
+Summary:
+
+- Migrated `getadvancedsearchpaged_api.js` to shared `relayGet`.
+- Preserved existing guard behavior and error contracts:
+    - `SEARCH_STRING_REQUIRED`
+    - `ORDER_BY_REQUIRED`
+    - `FIELD_SORT_REQUIRED`
+    - `SHOW_NUMBER_OF_RECORDS_REQUIRED`
+    - `INVALID_SEARCH_STRING`
+    - `ADVANCED_SEARCH_PAGED_FETCH_FAILED`
+- Preserved endpoint-specific transform behavior (`@odata.nextLink` normalization via `transformData`).
+- Updated phase21 endpoint contract tests to inject `relayGet` mocks for `getadvancedsearchpaged_api` guard/catch assertions.
+
+Validation:
+
+- `node tests/phase21/endpoint-handler-contract.test.cjs` -> pass (152/152)
+- `npm run lint` -> warnings only (pre-existing `react-hooks/exhaustive-deps`; no new lint errors)
+
+Follow-ups:
+
+- Continue P2-S2 with remaining legacy relay GET candidates (`createwatchedcases_api`, `deletewatchedcasesproxy_api`, `getadvancedsearch_api`, `getbasicsearch_by_address_api`, `getbasicsearch_by_lparref_api`, `getdnscoords_api`).