feat(cms): enhance content editors and implement automatic ID generation

Improve the CMS administration interface across multiple pages (Accreditation, Admissions, History, Partnerships, and Policies) with a focus on usability and data integrity.
Key changes include:
- Implement `ensureUniqueIds` utility to automatically generate and maintain unique slugs for content items, removing the need for manual ID entry in the UI.
- Refactor the Admissions calculator to support detailed per-option editing via a new dedicated view and routes.
- Replace basic datalists with a custom, searchable icon combobox component for better visual selection.
- Update `_renderSingletonPageView` to handle active tab persistence via query parameters.
- Streamline editor configurations by removing redundant fields and improving help text.
- Enhance the Admissions "Key Dates" editor with a dynamic table interface for managing columns and rows.
- Normalize data payloads in controllers to ensure consistent API responses and internal linking.

controllers/policiesController.js

@@ -9,6 +9,7 @@ const createRenderSingletonPageView = require("./_renderSingletonPageView");
 const writeAuditLog = require("../audit/writeAuditLog");
 const diffObject = require("../audit/diffObject");
 const jsonHelper = require("../utils/jsonHelper");
+const { ensureUniqueIds } = require("../utils/contentEditorIds");
 
 function formatLastUpdated(date = new Date()) {
   return `Last updated: ${new Intl.DateTimeFormat("en-US", {
@@ -18,9 +19,26 @@ function formatLastUpdated(date = new Date()) {
   }).format(date)}`;
 }
 
-function withLastUpdated(payload) {
+function withLastUpdated(payload, { beforeData } = {}) {
+  const existingPolicies = Array.isArray(beforeData?.policies) ? beforeData.policies : [];
+
+  const policies = ensureUniqueIds(
+    Array.isArray(payload.policies) ? payload.policies : [],
+    (policy) => policy.id,
+    (policy, index) => policy.navLabel || policy.title || `policy-${index + 1}`,
+    "policy",
+  ).map((policy) => {
+    const existingPolicy = existingPolicies.find((item) => item.id === policy.id);
+
+    return {
+      ...policy,
+      sections: Array.isArray(existingPolicy?.sections) ? existingPolicy.sections : [],
+    };
+  });
+
   return {
     ...payload,
+    policies,
     hero: {
       ...(payload.hero || {}),
       lastUpdated: formatLastUpdated(),