feat(frontend): link custom preferences in profile editor

Foxnouns.Frontend/src/lib/components/Error.svelte

@@ -12,6 +12,8 @@
 	<svelte:element this={headerElem ?? "h4"}>
 		{#if error.code === ErrorCode.BadRequest}
 			{$t("error.bad-request-header")}
+		{:else if error.status === 404}
+			{$t("error.not-found-header")}
 		{:else}
 			{$t("error.generic-header")}
 		{/if}

Foxnouns.Frontend/src/lib/components/editor/CustomPreferencesNotice.svelte

@@ -0,0 +1,8 @@
+<script lang="ts">
+	import { t } from "$lib/i18n";
+</script>
+
+<div class="alert alert-secondary">
+	{$t("editor.custom-preference-notice")}
+	<a href="/settings/pref" class="alert-link">{$t("editor.custom-preference-notice-link")}</a>
+</div>

Foxnouns.Frontend/src/lib/i18n/locales/en.json

@@ -121,7 +121,8 @@
 		"500-description": "Something went wrong on the server. Please try again later.",
 		"unknown-status-description": "Something went wrong, but we're not sure what. Please try again.",
 		"error-id": "If you report this error to the developers, please give them this ID:",
-		"page-not-found": "No page exists at this URL."
+		"page-not-found": "No page exists at this URL.",
+		"not-found-header": "That page could not be found"
 	},
 	"settings": {
 		"general-information-tab": "General information",
@@ -288,7 +289,9 @@
 		"custom-preference-size-small": "Small",
 		"custom-preference-size": "Text size",
 		"custom-preference-muted": "Show as muted text",
-		"custom-preference-favourite": "Treat like favourite"
+		"custom-preference-favourite": "Treat like favourite",
+		"custom-preference-notice": "Want to edit your custom preferences?",
+		"custom-preference-notice-link": "Go to settings"
 	},
 	"cancel": "Cancel",
 	"report": {