Merged PR 2251: refactor(representations): separate representation page SSR loaders into lib/...

refactor(representations): separate representation page SSR loaders into lib/representation/pageLoaders (Slice R2, behaviour-preserving)

Related work items: #22441

context/representations-refactor-tracker.md

@@ -6,7 +6,7 @@ Base branch: `refactor`
 
 ## Status
 
-Current slice: Slice R1 — Representation Entry Logic Extraction  
+Current slice: Slice R2 — Representation Page Loader Separation  
 Status: COMPLETE
 
 ---
@@ -61,6 +61,26 @@ Separate SSR/data-loading paths.
 - `loadExistingRepresentation()`
 - `loadNewRepresentation()`
 
+**Completion notes (this slice):**
+
+- Extracted representation page SSR/data-loading orchestration into `lib/representation/pageLoaders.js` with:
+    - `loadRepresentationBootstrap({ ctx })`
+    - `loadExistingRepresentation({ store, ctx, bootstrap })`
+    - `loadNewRepresentation({ store, ctx, bootstrap })`
+    - `loadRepresentationPage({ store, ctx })`
+- Kept `pages/myportal/representation.js` render/UI unchanged and converted `getServerSideProps` to a thin wrapper calling `loadRepresentationPage(...)`.
+- Preserved behaviour-critical details:
+    - shared pre-branch bootstrap fetch timing
+    - exact branch condition `query.hasOwnProperty("state")`
+    - existing dispatch ordering and payload shapes
+    - existing fallback/data-shape logic and typo-field usage
+    - unchanged SSR returned props (`containerID`, `docsOffline`)
+- Validation evidence:
+    - `npm run lint` completed (warnings only, no new errors).
+    - `npm run test:reps` re-run completed: **6 passed, 1 failed**.
+    - Failing test: `[chromium] tests/loggedin/raiserep.spec.js:203:5` (`Raise Statement representation as an Interested Party`) with error `no statement option` / missing `Statement` option in combobox.
+    - Manual regression checks confirmed passed (APP/IP/Agent/LPA), including EN/CY parity.
+
 ---
 
 ### Slice R3 — Journey Step Resolution Extraction