feat(analytics): add support for selected analytics guild and channel in App component

fix(redis): enhance Redis connection handling with fallback to in-memory storage
chore(sql): create missing messages and attachments tables with necessary constraints and indexes

frontend/src/types/ui.ts

@@ -6,6 +6,8 @@ export interface UIState {
   selectedVoiceChannel?: string;
   selectedTextGuild?: string;
   selectedTextChannel?: string;
+  selectedAnalyticsGuild?: string;
+  selectedAnalyticsChannel?: string;
   activeTab?: DashboardTab;
   isListening?: boolean;
   isStreaming?: boolean;