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.

utils/contentEditors/policiesConfig.js

@@ -13,7 +13,7 @@ const {
 const baseConfig = {
   key: "policies",
   title: "Policies Management",
-  subtitle: "Edit content displayed on the policies page",
+  subtitle: "Manage the content for the policies page",
   routeBase: "/admin/policies",
   apiPath: "/api/policies",
   previewPath: "/policies",
@@ -56,7 +56,6 @@ const baseConfig = {
         "policies",
         "Policies",
         [
-          text("id", "Policy key", { maxLength: 40 }),
           text("navLabel", "Sidebar label", { maxLength: 40 }),
           text("title", "Policy title", { maxLength: 70 }),
           text("effectiveDate", "Effective date", { maxLength: 50 }),
@@ -128,7 +127,7 @@ function createPoliciesSectionEditorConfig(policy, allPolicies = []) {
                           maxLength: 40,
                           options: policyOptions,
                           helpText:
-                            "Optional. Choose another policy to switch tabs on the frontend.",
+                            "Optional. Choose another policy to open when this link is clicked.",
                         }),
                       ],
                       {