Emdash source with visual editor image upload fix

Fixes:
1. media.ts: wrap placeholder generation in try-catch
2. toolbar.ts: check r.ok, display error message in popover

packages/core/src/api/schemas/settings.ts

@@ -0,0 +1,63 @@
+import { z } from "zod";
+
+import { httpUrl } from "./common.js";
+
+// ---------------------------------------------------------------------------
+// Settings: Input schemas
+// ---------------------------------------------------------------------------
+
+const mediaReference = z.object({
+	mediaId: z.string(),
+	alt: z.string().optional(),
+});
+
+const socialSettings = z.object({
+	twitter: z.string().optional(),
+	github: z.string().optional(),
+	facebook: z.string().optional(),
+	instagram: z.string().optional(),
+	linkedin: z.string().optional(),
+	youtube: z.string().optional(),
+});
+
+const seoSettings = z.object({
+	titleSeparator: z.string().max(10).optional(),
+	defaultOgImage: mediaReference.optional(),
+	robotsTxt: z.string().max(5000).optional(),
+	googleVerification: z.string().max(100).optional(),
+	bingVerification: z.string().max(100).optional(),
+});
+
+export const settingsUpdateBody = z
+	.object({
+		title: z.string().optional(),
+		tagline: z.string().optional(),
+		logo: mediaReference.optional(),
+		favicon: mediaReference.optional(),
+		url: z.union([httpUrl, z.literal("")]).optional(),
+		postsPerPage: z.number().int().min(1).max(100).optional(),
+		dateFormat: z.string().optional(),
+		timezone: z.string().optional(),
+		social: socialSettings.optional(),
+		seo: seoSettings.optional(),
+	})
+	.meta({ id: "SettingsUpdateBody" });
+
+// ---------------------------------------------------------------------------
+// Settings: Response schemas
+// ---------------------------------------------------------------------------
+
+export const siteSettingsSchema = z
+	.object({
+		title: z.string().optional(),
+		tagline: z.string().optional(),
+		logo: mediaReference.optional(),
+		favicon: mediaReference.optional(),
+		url: z.string().optional(),
+		postsPerPage: z.number().int().optional(),
+		dateFormat: z.string().optional(),
+		timezone: z.string().optional(),
+		social: socialSettings.optional(),
+		seo: seoSettings.optional(),
+	})
+	.meta({ id: "SiteSettings" });