22541 add bundled case breadcrumb state resolver

memory-bank/change-log.md

@@ -83,6 +83,35 @@ Follow-ups:
 
 - Next breadcrumbs slice can target incremental decomposition of large pathname branch rendering blocks in `components/breadcrumbs.js` into grouped render helpers with behavior parity.
 
+### CL-22541-C: breadcrumb case-state bundling helper (single-call resolver)
+
+date: 2026-04-09  
+author: Cline  
+scope: `lib/routing/routeState.js`, `components/breadcrumbs.js`, `tests/phase22/route-state-helper.test.cjs`  
+type: change  
+rationale: Continue Priority 3 breadcrumbs refactor by bundling repeatedly paired breadcrumb href/label resolution into one pure helper so component call sites stay thinner and less drift-prone.
+impact: Refactor-only centralization of existing route-state composition logic; no intended auth/session/API/i18n behavior change.
+status: completed
+
+Summary:
+
+- Added `resolveCaseBreadcrumbState(...)` in `lib/routing/routeState.js` to return:
+    - `breadcrumbHref`
+    - `caseResultsHref`
+    - `breadcrumbLabel`
+- Updated `components/breadcrumbs.js` to replace three separate helper invocations with one resolver call.
+- Extended `tests/phase22/route-state-helper.test.cjs` with bundled case-state resolver coverage.
+
+Validation:
+
+- `npx eslint lib/routing/routeState.js components/breadcrumbs.js tests/phase22/route-state-helper.test.cjs` -> pass.
+- `node tests/phase22/route-state-helper.test.cjs` -> pass (8/8).
+- `node tests/phase22/index.test.cjs` -> pass (combined suite).
+
+Follow-ups:
+
+- Next bounded slice can extract grouped pathname render blocks from `components/breadcrumbs.js` (data-driven map or small render helpers) while preserving route parity.
+
 ### CL-00X: 22500 `components/elements/index.js` Phase 1 helper extraction
 
 date: 2026-04-07