Remove collapsible behavior from sidebar Work and Company sections

The sidebar sections no longer fold/unfold — they are always visible.
Removed Collapsible component, chevron icon, and open/close state.

PAP-38

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/components/SidebarSection.tsx

@@ -1,40 +1,17 @@
-import { ChevronRight, type LucideIcon } from "lucide-react";
-import { useState, type ReactNode } from "react";
-import { cn } from "../lib/utils";
-import {
-  Collapsible,
-  CollapsibleContent,
-  CollapsibleTrigger,
-} from "@/components/ui/collapsible";
+import type { ReactNode } from "react";
 
 interface SidebarSectionProps {
   label: string;
-  icon?: LucideIcon;
   children: ReactNode;
-  defaultOpen?: boolean;
 }
 
-export function SidebarSection({
-  label,
-  children,
-  defaultOpen = true,
-}: SidebarSectionProps) {
-  const [open, setOpen] = useState(defaultOpen);
-
+export function SidebarSection({ label, children }: SidebarSectionProps) {
   return (
-    <Collapsible open={open} onOpenChange={setOpen}>
-      <CollapsibleTrigger className="flex items-center justify-between w-full px-3 py-1.5 text-[10px] font-medium uppercase tracking-widest font-mono text-muted-foreground/60 hover:text-muted-foreground transition-colors">
+    <div>
+      <div className="px-3 py-1.5 text-[10px] font-medium uppercase tracking-widest font-mono text-muted-foreground/60">
         {label}
-        <ChevronRight
-          className={cn(
-            "h-3 w-3 transition-transform",
-            open && "rotate-90"
-          )}
-        />
-      </CollapsibleTrigger>
-      <CollapsibleContent>
-        <div className="flex flex-col gap-0.5 mt-0.5">{children}</div>
-      </CollapsibleContent>
-    </Collapsible>
+      </div>
+      <div className="flex flex-col gap-0.5 mt-0.5">{children}</div>
+    </div>
   );
 }