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

templates/blank/astro.config.mjs

@@ -0,0 +1,23 @@
+import node from "@astrojs/node";
+import react from "@astrojs/react";
+import { defineConfig } from "astro/config";
+import emdash, { local } from "emdash/astro";
+import { sqlite } from "emdash/db";
+
+export default defineConfig({
+	output: "server",
+	adapter: node({
+		mode: "standalone",
+	}),
+	integrations: [
+		react(),
+		emdash({
+			database: sqlite({ url: "file:./data.db" }),
+			storage: local({
+				directory: "./uploads",
+				baseUrl: "/_emdash/api/media/file",
+			}),
+		}),
+	],
+	devToolbar: { enabled: false },
+});