Overhaul UI with shadcn components and new pages

Add shadcn/ui components (badge, button, card, input, select,
separator). Add company context provider. New pages: Activity,
Approvals, Companies, Costs, Org chart. Restyle existing pages
(Dashboard, Agents, Issues, Goals, Projects) with shadcn components
and dark theme. Update layout, sidebar navigation, and routing.

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

ui/src/pages/Org.tsx

@@ -0,0 +1,52 @@
+import { useCallback } from "react";
+import { agentsApi, type OrgNode } from "../api/agents";
+import { useCompany } from "../context/CompanyContext";
+import { useApi } from "../hooks/useApi";
+import { StatusBadge } from "../components/StatusBadge";
+import { Card, CardContent } from "@/components/ui/card";
+
+function OrgTree({ nodes, depth = 0 }: { nodes: OrgNode[]; depth?: number }) {
+  return (
+    <div className="space-y-2">
+      {nodes.map((node) => (
+        <div key={node.id}>
+          <Card style={{ marginLeft: `${depth * 20}px` }}>
+            <CardContent className="p-3 flex items-center justify-between">
+              <div>
+                <p className="font-medium">{node.name}</p>
+                <p className="text-xs text-muted-foreground">{node.role}</p>
+              </div>
+              <StatusBadge status={node.status} />
+            </CardContent>
+          </Card>
+          {node.reports.length > 0 && <OrgTree nodes={node.reports} depth={depth + 1} />}
+        </div>
+      ))}
+    </div>
+  );
+}
+
+export function Org() {
+  const { selectedCompanyId } = useCompany();
+
+  const fetcher = useCallback(() => {
+    if (!selectedCompanyId) return Promise.resolve([] as OrgNode[]);
+    return agentsApi.org(selectedCompanyId);
+  }, [selectedCompanyId]);
+
+  const { data, loading, error } = useApi(fetcher);
+
+  if (!selectedCompanyId) {
+    return <p className="text-muted-foreground">Select a company first.</p>;
+  }
+
+  return (
+    <div>
+      <h2 className="text-2xl font-bold mb-4">Org Chart</h2>
+      {loading && <p className="text-muted-foreground">Loading...</p>}
+      {error && <p className="text-destructive">{error.message}</p>}
+      {data && data.length === 0 && <p className="text-muted-foreground">No agents in org.</p>}
+      {data && data.length > 0 && <OrgTree nodes={data} />}
+    </div>
+  );
+}