Merge branch worktree-neo-surveillance-redesign into main — Neo Surveillance redesign

Full frontend redesign with glassmorphic dark theme, floating top nav,
Live2D mascot, split-pane messages, and Ops Center dashboard.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com

services/frontend/src/components/analysis/search-panel.tsx

@@ -64,8 +64,8 @@ export function SearchPanel() {
           </p>
           {results.length === 0 ? (
             <EmptyState
-              title="No messages found"
-              description="Try a different search query."
+              icon={Search}
+              title="No messages found matching your query."
             />
           ) : (
             <div className="space-y-2">