fix(public): distinguish unavailable data from empty results and missing pages

src/app/(site)/guilds/[id]/forum/[threadId]/page.tsx

@@ -4,6 +4,7 @@ import { getTranslations } from "next-intl/server";
 import type { CSSProperties } from "react";
 import { replyToThread } from "@/actions/social";
 import Link from "@/components/link";
+import { PublicLoadError } from "@/components/public/load-error";
 import { ContentCard, EmptyState } from "@/components/public/ui";
 import { auth } from "@/lib/auth";
 import {
@@ -14,6 +15,7 @@ import {
 	User,
 } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
+import { publicReadFailure } from "@/lib/services/public-read";
 
 type SearchParams = Promise<{ replied?: string; error?: string }>;
 
@@ -60,6 +62,8 @@ export default async function GuildForumThreadPage({
 		pinned: number | null;
 		openerId: number | null;
 	} | null = null;
+	let postsFailed = false;
+	let authorsFailed = false;
 	let posts: {
 		id: number;
 		userId: number;
@@ -96,9 +100,15 @@ export default async function GuildForumThreadPage({
 		]);
 		guild = guildRow;
 		thread = threadRow;
-	} catch {
-		guild = null;
-		thread = null;
+	} catch (error) {
+		publicReadFailure("guild.thread")(error);
+		return (
+			<main className="page-grid">
+				<ContentCard>
+					<PublicLoadError href={`/guilds/${guildId}/forum/${threadId}`} />
+				</ContentCard>
+			</main>
+		);
 	}
 
 	if (!guild || !thread) notFound();
@@ -122,7 +132,9 @@ export default async function GuildForumThreadPage({
 				asc(GuildsForumsComments.createdAt),
 				asc(GuildsForumsComments.id),
 			);
-	} catch {
+	} catch (error) {
+		publicReadFailure("guild.posts")(error);
+		postsFailed = true;
 		posts = [];
 	}
 
@@ -137,7 +149,9 @@ export default async function GuildForumThreadPage({
 					.from(User)
 					.where(inArray(User.id, authorIds))
 			: [];
-	} catch {
+	} catch (error) {
+		publicReadFailure("guild.post-authors")(error);
+		authorsFailed = true;
 		users = [];
 	}
 	const usernameById = new Map(users.map((u) => [u.id, u.username]));
@@ -195,10 +209,17 @@ export default async function GuildForumThreadPage({
 			<ContentCard
 				icon="📝"
 				title={t("postsTitle")}
-				subtitle={t("postsSubtitle", { count: posts.length })}
-				padded={posts.length === 0}
+				subtitle={
+					postsFailed ? undefined : t("postsSubtitle", { count: posts.length })
+				}
+				padded={posts.length === 0 || authorsFailed}
 			>
-				{posts.length === 0 ? (
+				{authorsFailed && (
+					<PublicLoadError href={`/guilds/${guild.id}/forum/${thread.id}`} />
+				)}
+				{postsFailed ? (
+					<PublicLoadError href={`/guilds/${guild.id}/forum/${thread.id}`} />
+				) : posts.length === 0 ? (
 					<EmptyState icon="📝">{t("postsEmpty")}</EmptyState>
 				) : (
 					<ul