diff --git a/src/components/DocumentTagCloud.tsx b/src/components/DocumentTagCloud.tsx
index b3ce99a1e..49bac53dd 100644
--- a/src/components/DocumentTagCloud.tsx
+++ b/src/components/DocumentTagCloud.tsx
@@ -53,6 +53,15 @@ function confidenceTitle(tag: SmartDocumentTag) {
   return `${tag.group}: ${tag.source} tag, ${Math.round(tag.confidence * 100)}% confidence`;
 }
 
+/**
+ * Renders a document tag with group-specific styling and optional search interaction.
+ *
+ * @param tag - The document tag to display.
+ * @param compact - Whether to use compact sizing.
+ * @param selected - Whether to indicate the tag as selected.
+ * @param onTagClick - Optional callback invoked when the tag is clicked.
+ * @returns The rendered document tag chip.
+ */
 function DocumentTagChip({
   tag,
   compact,
diff --git a/src/components/applications-launcher-page.tsx b/src/components/applications-launcher-page.tsx
index 3af9807e4..446c2a73b 100644
--- a/src/components/applications-launcher-page.tsx
+++ b/src/components/applications-launcher-page.tsx
@@ -321,6 +321,12 @@ function QuickActions({ onSelect, mobile }: { onSelect: (id: string) => void; mo
   );
 }
 
+/**
+ * Renders responsive tabs for selecting a tool category.
+ *
+ * @param activeFilter - The currently selected tool category.
+ * @param onFilterChange - Called with the selected category when a tab is activated.
+ */
 function FilterTabs({
   activeFilter,
   onFilterChange,
diff --git a/src/components/clinical-dashboard/favourites-command-library-page.tsx b/src/components/clinical-dashboard/favourites-command-library-page.tsx
index 0cfb03fbe..054bd4e82 100644
--- a/src/components/clinical-dashboard/favourites-command-library-page.tsx
+++ b/src/components/clinical-dashboard/favourites-command-library-page.tsx
@@ -362,6 +362,11 @@ function ContinueStrip({ item, onSelect }: { item: FavouriteItem; onSelect: (id:
   );
 }
 
+/**
+ * Renders a menu of actions for a favourite item.
+ *
+ * @param item - The favourite item associated with the available actions
+ */
 function RowActionsMenu({ item }: { item: FavouriteItem }) {
   const [open, setOpen] = useState(false);
   const buttonRef = useRef<HTMLButtonElement>(null);
diff --git a/src/components/clinical-dashboard/favourites-library-nav.tsx b/src/components/clinical-dashboard/favourites-library-nav.tsx
index c6ec59429..8d2e0f732 100644
--- a/src/components/clinical-dashboard/favourites-library-nav.tsx
+++ b/src/components/clinical-dashboard/favourites-library-nav.tsx
@@ -224,6 +224,12 @@ function SidebarRow({ entry }: { entry: SidebarEntry }) {
   );
 }
 
+/**
+ * Renders the favourites library navigation sidebar in expanded or compact mode.
+ *
+ * @param collapsed - Whether to display the compact sidebar layout.
+ * @param onCollapsedChange - Called when the user requests a different sidebar layout.
+ */
 export function FavouritesSidebar({
   collapsed,
   onCollapsedChange,
diff --git a/src/components/differentials/differential-detail-page.tsx b/src/components/differentials/differential-detail-page.tsx
index f22bb6210..d6526c33a 100644
--- a/src/components/differentials/differential-detail-page.tsx
+++ b/src/components/differentials/differential-detail-page.tsx
@@ -126,6 +126,14 @@ const sectionItemIconClass: Partial<Record<DifferentialSection["tone"], string>>
   test: "text-[color:var(--info)]",
 };
 
+/**
+ * Renders section items according to the section tone.
+ *
+ * @param section - The section whose tone determines the item layout and styling
+ * @param items - The items to display
+ * @param overlapLinks - Maps overlap item labels to diagnosis slugs for linked items
+ * @returns The rendered section item list
+ */
 function SectionItems({
   section,
   items,
@@ -702,6 +710,14 @@ function FooterStatus({
   );
 }
 
+/**
+ * Renders desktop actions for comparing, copying, and saving a diagnosis.
+ *
+ * @param record - The diagnosis record whose content is copied.
+ * @param saved - Whether the diagnosis is currently saved.
+ * @param onToggleSaved - Called when the saved state is toggled.
+ * @param onCompare - Called when comparison is requested.
+ */
 function TopActions({
   record,
   saved,
@@ -833,6 +849,12 @@ const detailTabs: Array<{ id: DifferentialDetailTabId; label: string }> = [
   { id: "source", label: "Source" },
 ];
 
+/**
+ * Renders keyboard-navigable tabs for the diagnosis detail sections.
+ *
+ * @param active - The currently selected tab.
+ * @param onChange - Called when the selected tab changes.
+ */
 function Tabs({
   active,
   onChange,
diff --git a/src/components/services/service-detail-page.tsx b/src/components/services/service-detail-page.tsx
index 1ef3fadbe..98fe8c746 100644
--- a/src/components/services/service-detail-page.tsx
+++ b/src/components/services/service-detail-page.tsx
@@ -264,6 +264,12 @@ function SummaryCard({ card }: { card: ServiceSummaryCard }) {
   );
 }
 
+/**
+ * Displays referral information rows with their values and copy actions.
+ *
+ * @param rows - The referral information rows to display
+ * @param onCopy - Callback invoked with a row value and feedback label when copying is requested
+ */
 function ReferralTable({
   rows,
   onCopy,