fix(audit-wave-9): standardize on Sheet for previews; doctrine in CLAUDE.md

Swap the one outlier (client-interests-tab.tsx) from Vaul Drawer to
Sheet side=right so every detail-preview surface uses the same
primitive. Document the doctrine: Sheet for side panels on both desktop
and mobile; Vaul Drawer reserved for mobile-only bottom-sheet UX
(currently just MoreSheet).

Closes ui/ux M11.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/providers/socket-provider.tsx

@@ -59,6 +59,9 @@ function SocketProviderClient({ children }: { children: ReactNode }) {
 
   useEffect(() => {
     if (!session?.user || !currentPortId) {
+      // Tear down the socket on session/port loss — canonical
+      // subscription-cleanup pattern.
+      // eslint-disable-next-line react-hooks/set-state-in-effect
       setSocket(null);
       setIsConnected(false);
       return;