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

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

@@ -3,9 +3,11 @@ import { notFound } from "next/navigation";
 import { getTranslations } from "next-intl/server";
 import type { CSSProperties } from "react";
 import Link from "@/components/link";
+import { PublicLoadError } from "@/components/public/load-error";
 import { ContentCard, EmptyState } from "@/components/public/ui";
 import { db, Guilds, GuildsForumsThreads, User } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
+import { publicReadFailure } from "@/lib/services/public-read";
 
 type SearchParams = Promise<{ posted?: string }>;
 
@@ -49,7 +51,7 @@ export default async function GuildForumPage({
 	const guildId = Number(id);
 	if (!Number.isInteger(guildId) || guildId <= 0) notFound();
 
-	// Guild header (read-only). A DB hiccup degrades to notFound rather than 500.
+	// Missing guilds and unavailable guild data have distinct outcomes.
 	let guild: { id: number; name: string; badge: string } | null = null;
 	try {
 		const [row] = await db
@@ -62,13 +64,22 @@ export default async function GuildForumPage({
 			.where(eq(Guilds.id, guildId))
 			.limit(1);
 		guild = row ?? null;
-	} catch {
-		guild = null;
+	} catch (error) {
+		publicReadFailure("guild.forum")(error);
+		return (
+			<main className="page-grid">
+				<ContentCard>
+					<PublicLoadError href={`/guilds/${guildId}/forum`} />
+				</ContentCard>
+			</main>
+		);
 	}
 
 	if (!guild) notFound();
 
 	// Threads for this guild. Pinned first, then most-recently active.
+	let threadsFailed = false;
+	let authorsFailed = false;
 	let threads: ThreadRow[] = [];
 	try {
 		threads = await db
@@ -95,7 +106,9 @@ export default async function GuildForumPage({
 				desc(GuildsForumsThreads.id),
 			)
 			.limit(100);
-	} catch {
+	} catch (error) {
+		publicReadFailure("guild.threads")(error);
+		threadsFailed = true;
 		threads = [];
 	}
 
@@ -113,7 +126,9 @@ export default async function GuildForumPage({
 					.from(User)
 					.where(inArray(User.id, openerIds))
 			: [];
-	} catch {
+	} catch (error) {
+		publicReadFailure("guild.thread-authors")(error);
+		authorsFailed = true;
 		users = [];
 	}
 
@@ -134,7 +149,11 @@ export default async function GuildForumPage({
 			<ContentCard
 				icon="🗣️"
 				title={t("forumTitle", { guild: guild.name || t("unnamedGuild") })}
-				subtitle={`${threads.length} ${threads.length === 1 ? t("threadSingular") : t("threadPlural")}`}
+				subtitle={
+					threadsFailed
+						? undefined
+						: `${threads.length} ${threads.length === 1 ? t("threadSingular") : t("threadPlural")}`
+				}
 				action={
 					<Link
 						href={`/guilds/${guild.id}/forum/new`}
@@ -145,8 +164,13 @@ export default async function GuildForumPage({
 				}
 			/>
 
-			<ContentCard padded={threads.length === 0}>
-				{threads.length === 0 ? (
+			<ContentCard padded={threads.length === 0 || authorsFailed}>
+				{authorsFailed && (
+					<PublicLoadError href={`/guilds/${guild.id}/forum`} />
+				)}
+				{threadsFailed ? (
+					<PublicLoadError href={`/guilds/${guild.id}/forum`} />
+				) : threads.length === 0 ? (
 					<EmptyState icon="🗣️">{t("empty")}</EmptyState>
 				) : (
 					<table>