feat: company-prefixed routing, delete tests, docs favicon, and skills

Add company-prefix URL routing utilities and custom router wrapper.
Add CLI company delete confirmation tests. Add docs favicon and
para-memory-files skill.

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

ui/src/lib/router.tsx

@@ -0,0 +1,76 @@
+import * as React from "react";
+import * as RouterDom from "react-router-dom";
+import type { NavigateOptions, To } from "react-router-dom";
+import { useCompany } from "@/context/CompanyContext";
+import {
+  applyCompanyPrefix,
+  extractCompanyPrefixFromPath,
+  normalizeCompanyPrefix,
+} from "@/lib/company-routes";
+
+function resolveTo(to: To, companyPrefix: string | null): To {
+  if (typeof to === "string") {
+    return applyCompanyPrefix(to, companyPrefix);
+  }
+
+  if (to.pathname && to.pathname.startsWith("/")) {
+    const pathname = applyCompanyPrefix(to.pathname, companyPrefix);
+    if (pathname !== to.pathname) {
+      return { ...to, pathname };
+    }
+  }
+
+  return to;
+}
+
+function useActiveCompanyPrefix(): string | null {
+  const { selectedCompany } = useCompany();
+  const params = RouterDom.useParams<{ companyPrefix?: string }>();
+  const location = RouterDom.useLocation();
+
+  if (params.companyPrefix) {
+    return normalizeCompanyPrefix(params.companyPrefix);
+  }
+
+  const pathPrefix = extractCompanyPrefixFromPath(location.pathname);
+  if (pathPrefix) return pathPrefix;
+
+  return selectedCompany ? normalizeCompanyPrefix(selectedCompany.issuePrefix) : null;
+}
+
+export * from "react-router-dom";
+
+export const Link = React.forwardRef<HTMLAnchorElement, React.ComponentProps<typeof RouterDom.Link>>(
+  function CompanyLink({ to, ...props }, ref) {
+    const companyPrefix = useActiveCompanyPrefix();
+    return <RouterDom.Link ref={ref} to={resolveTo(to, companyPrefix)} {...props} />;
+  },
+);
+
+export const NavLink = React.forwardRef<HTMLAnchorElement, React.ComponentProps<typeof RouterDom.NavLink>>(
+  function CompanyNavLink({ to, ...props }, ref) {
+    const companyPrefix = useActiveCompanyPrefix();
+    return <RouterDom.NavLink ref={ref} to={resolveTo(to, companyPrefix)} {...props} />;
+  },
+);
+
+export function Navigate({ to, ...props }: React.ComponentProps<typeof RouterDom.Navigate>) {
+  const companyPrefix = useActiveCompanyPrefix();
+  return <RouterDom.Navigate to={resolveTo(to, companyPrefix)} {...props} />;
+}
+
+export function useNavigate(): ReturnType<typeof RouterDom.useNavigate> {
+  const navigate = RouterDom.useNavigate();
+  const companyPrefix = useActiveCompanyPrefix();
+
+  return React.useCallback(
+    ((to: To | number, options?: NavigateOptions) => {
+      if (typeof to === "number") {
+        navigate(to);
+        return;
+      }
+      navigate(resolveTo(to, companyPrefix), options);
+    }) as ReturnType<typeof RouterDom.useNavigate>,
+    [navigate, companyPrefix],
+  );
+}