refactor: update Discord message indexing logic

- Enhanced the indexing process for Discord messages to treat each message as an individual document, improving metadata handling and content management.
- Replaced the announcement banner component and related state management with a more streamlined approach, removing unnecessary files and simplifying the dashboard layout.
- Updated logging messages for clarity and accuracy regarding processed messages.

surfsense_web/components/announcement-banner.tsx

@@ -1,47 +0,0 @@
-"use client";
-
-import { useAtom } from "jotai";
-import { ExternalLink, Info, X } from "lucide-react";
-import { announcementDismissedAtom } from "@/atoms/announcement.atom";
-import { Button } from "@/components/ui/button";
-
-export function AnnouncementBanner() {
-	const [isDismissed, setIsDismissed] = useAtom(announcementDismissedAtom);
-
-	const handleDismiss = () => {
-		setIsDismissed(true);
-	};
-
-	if (isDismissed) return null;
-
-	return (
-		<div className="relative h-[3rem] flex items-center justify-center  border  bg-gradient-to-r from-blue-600 to-blue-500 dark:from-blue-700 dark:to-blue-600 border-b border-blue-700 dark:border-blue-800">
-			<div className="container mx-auto px-4">
-				<div className="flex items-center justify-center gap-3 py-2.5">
-					<Info className="h-4 w-4 text-blue-50 flex-shrink-0" />
-					<p className="text-sm text-blue-50 text-center font-medium">
-						SurfSense is a work in progress.{" "}
-						<a
-							href="https://github.com/MODSetter/SurfSense/issues"
-							target="_blank"
-							rel="noopener noreferrer"
-							className="inline-flex items-center gap-1 underline decoration-blue-200 underline-offset-2 hover:decoration-white transition-colors"
-						>
-							Report issues on GitHub
-							<ExternalLink className="h-3 w-3" />
-						</a>
-					</p>
-					<Button
-						variant="ghost"
-						size="sm"
-						className="h-7 w-7 p-0 shrink-0 text-blue-100 hover:text-white hover:bg-blue-700/50 dark:hover:bg-blue-800/50 absolute right-4"
-						onClick={handleDismiss}
-					>
-						<X className="h-3.5 w-3.5" />
-						<span className="sr-only">Dismiss</span>
-					</Button>
-				</div>
-			</div>
-		</div>
-	);
-}