test(phase22): add case service behavioural coverage

memory-bank/change-log.md

@@ -2602,3 +2602,40 @@ Validation:
 Follow-ups:
 
 - Optional next widened slice: add a focused phase22 behavioral suite for `caseDirectService` and normalize any remaining specialized encoding usage behind explicit helper options where appropriate.
+
+---
+
+### CL-073: TASK22260 essential condensed slice — case phase22 behavioural coverage + encoding contract lock
+
+date: 2026-03-25
+author: Cline
+scope: `tests/phase22/{case-service-behaviour,index}.test.cjs`
+type: change
+rationale: Condense remaining core work into one essential slice by adding explicit phase22 behavioural coverage for `caseDirectService` route composition and encoding-sensitive contracts.
+impact: Improves regression confidence for case service route-building behavior (BASE_URL composition, case-reference encoding/escaping, error-return contracts) without runtime behavior changes.
+status: completed
+
+Summary:
+
+- Added new suite `tests/phase22/case-service-behaviour.test.cjs` with focused behavioural assertions for:
+    - `getPortalModuleDetails` BASE_URL + encoded case reference composition
+    - `getPortalModuleDetailsProxy` apostrophe escape behavior in case reference
+    - `getAppealID` query composition and non-underscore value extraction
+    - `getAppealPDFDocument` failure-path logging + `error.response` passthrough
+- Updated `tests/phase22/index.test.cjs` aggregate runner to include `case-service-behaviour` suite.
+
+Validation:
+
+- `node tests/phase22/index.test.cjs` -> pass
+    - core-token: 2/2
+    - client-utils: 6/6
+    - file-client: 4/4
+    - case-service: 4/4
+    - phase22 combined: pass
+- `node tests/phase6/service-behaviour.test.cjs` -> pass (9/9)
+- `node tests/phase7/service-behaviour.test.cjs` -> pass (13/13)
+- `npm run lint` -> warnings only (pre-existing `react-hooks/exhaustive-deps`; no new lint errors)
+
+Follow-ups:
+
+- Optional closure slice: add a dedicated phase22 portal-service behavioural suite and finish harmonization of remaining direct query string composition in `portalDirectService` write helpers.